Teac

Dual mono power amplifier with fully balanced structure and two custom made Hypex Electronics Ncore power amplifier modulesFeatures at a glanceTwo Ncore power modules made by Hypex Electronics B.V. And tuned especially for this modelHigh output with a practical maximum of 260 W + 260 W (4Ω) / 170 W + 170 W (8Ω)Dual mono design throughout entire systemClean signal amplification realized with a fully balanced design at the input stageTwo independent left/right high-capacity toroidal core power supply transformersDiscrete buffer amplifiers used in the input stageThree supporting pinpoint feet that are easy to install (patent numbers 4075477 and 3778108)Two linked VU meters which show musical pulse, with four dimmer levels and two sensitivity settingsFan-free design to minimize noise12V trigger in and through for power synchronizationThe complete dual mono design includes the power supplyWith two toroidal core power supply transformers and two Ncore modules, the extravagant circuitry has a complete dual mono structure from input to output. A dual mono structure, in which the channels are each completely mono, prevents interference between the left and right signals and achieves outstanding channel separation. This enables rich audio reproduction that provides a larger sound stage and more three-dimensional sound.High output with a practical maximum of 260 W + 260 W*1 / 170 W + 170 W*2Hypex Ncore power amplifier modules realize both high efficiency and high audio quality. These two amplifier modules, which were tuned and designed specifically for TEAC, drive the speakers without losing any of the original musical expression, from delicate pianissimo to powerful fortissimo.*1 4Ω *2 8ΩVibration control from a flexible structureThe front, side, and rear panels are secured with 3mm-thick heavy sheet metal as the primary material. Then, joints that provide suspension are used at the junctures of the front, side, rear and top panels. This enclosure with a flexible structure controls the vibration of the entire device to allow open and vibrant sound reproduction.The fan-free design achieved with an effective ventilation systemDespite the high output of this power amplifier, a fan-free design has been realized with circuit board placement calculated for airflow and precise layout of air inlets and outlets. Heat dispersion is increased by attaching the amplifier modules directly to the bottom panel. Along with the fin structure of the side panels, this reliably abates internal heat.Extensive design for vibration controlA floating structure keeps the transformers, which can easily cause vibration, detached from the bottom panel. The form of the side panel fins, which provide heat dispersion, has been adjusted to eliminate vibration.In order to suppress vibrations that affect audio quality thoroughly, the TEAC original pin-point feet that utilize a new mechanism are attached to the bottom panel with appropriate allowance, while a number of screws that fix the circuit boards to the chassis are minimized.Numerous features for audio qualityThe durability of input circuits is ensured by including slits between each connector. In addition, direct wiring without connectors is used from the input circuits to deliver input signals to the discrete buffer circuits without losing any of their clarity.Low-profile body creates new potential in living spacesA reduction in height, as well as the chassis depth, enables more freedom of placement. Whether in the living room or a workplace, you can use them to drive your favorite speakers as you like.Other functionsTrigger input for power synchronization with other devicesLarge VU metersMeter dimmer switchingMeter gain switchingStereo/bi-amp switching

Dual mono power amplifier with fully balanced structure and two custom made Hypex Electronics Ncore power amplifier modulesFeatures at a glanceTwo Ncore power modules made by Hypex Electronics B.V. And tuned especially for this modelHigh output with a practical maximum of 260 W + 260 W (4Ω) / 170 W + 170 W (8Ω)Dual mono design throughout entire systemClean signal amplification realized with a fully balanced design at the input stageTwo independent left/right high-capacity toroidal core power supply transformersDiscrete buffer amplifiers used in the input stageThree supporting pinpoint feet that are easy to install (patent numbers 4075477 and 3778108)Two linked VU meters which show musical pulse, with four dimmer levels and two sensitivity settingsFan-free design to minimize noise12V trigger in and through for power synchronizationThe complete dual mono design includes the power supplyWith two toroidal core power supply transformers and two Ncore modules, the extravagant circuitry has a complete dual mono structure from input to output. A dual mono structure, in which the channels are each completely mono, prevents interference between the left and right signals and achieves outstanding channel separation. This enables rich audio reproduction that provides a larger sound stage and more three-dimensional sound.High output with a practical maximum of 260 W + 260 W*1 / 170 W + 170 W*2Hypex Ncore power amplifier modules realize both high efficiency and high audio quality. These two amplifier modules, which were tuned and designed specifically for TEAC, drive the speakers without losing any of the original musical expression, from delicate pianissimo to powerful fortissimo.*1 4Ω *2 8ΩVibration control from a flexible structureThe front, side, and rear panels are secured with 3mm-thick heavy sheet metal as the primary material. Then, joints that provide suspension are used at the junctures of the front, side, rear and top panels. This enclosure with a flexible structure controls the vibration of the entire device to allow open and vibrant sound reproduction.The fan-free design achieved with an effective ventilation systemDespite the high output of this power amplifier, a fan-free design has been realized with circuit board placement calculated for airflow and precise layout of air inlets and outlets. Heat dispersion is increased by attaching the amplifier modules directly to the bottom panel. Along with the fin structure of the side panels, this reliably abates internal heat.Extensive design for vibration controlA floating structure keeps the transformers, which can easily cause vibration, detached from the bottom panel. The form of the side panel fins, which provide heat dispersion, has been adjusted to eliminate vibration.In order to suppress vibrations that affect audio quality thoroughly, the TEAC original pin-point feet that utilize a new mechanism are attached to the bottom panel with appropriate allowance, while a number of screws that fix the circuit boards to the chassis are minimized.Numerous features for audio qualityThe durability of input circuits is ensured by including slits between each connector. In addition, direct wiring without connectors is used from the input circuits to deliver input signals to the discrete buffer circuits without losing any of their clarity.Low-profile body creates new potential in living spacesA reduction in height, as well as the chassis depth, enables more freedom of placement. Whether in the living room or a workplace, you can use them to drive your favorite speakers as you like.Other functionsTrigger input for power synchronization with other devicesLarge VU metersMeter dimmer switchingMeter gain switchingStereo/bi-amp switching

Completely redesigned 500 Series DAC/Preamp/Headphone amplifier with high-end 700 Series design concept in a compact A4-size package.The UD-507 is equipped with our proprietary “TRDD 5” discrete DAC,designed with musicality as the top priority.Following in the footsteps of TEAC's acclaimed 701 series, the new “TRDD 5” discrete DAC offers a clear soundstage and accurate imaging, providing listeners with a truly immersive musical experience.Fully BalancedDual Monaural Headphone AmplifierUD-507The UD-507 is a headphone amplifier featuring the TEAC-HCLD2 high current line driver, which is characterized by its high current supply capability.Compared to the previous model, the maximum output power has been greatlyimproved by strengthening the power supply, resulting in a generous driving power of 1,200mW + 1,200mW (balanced output at 100 ohm load), which is comparable to a dedicated headphone amplifier without DAC.The power amplifier gain can be switched between 3 positions (Low/Mid/High) to fine-tune the output to best match the sensitivity and impedance of the headphones.In a glance :Proprietary “TEAC Reference Discrete DAC: TRDD 5”In Addition to 44.1kHz and 48kHz Internal Clocks, 10MHz External Clock Input Is SupportedDual Monaural ConstructionFully Balanced Signal TransferTwo Large Toroidal Core Transformers / Non-feedback Power Supply CircuitPreamplifier with Analog Volume Control – 4 Digital Inputs and 2 Line Inputs (RCA/XLR)Improved TEAC-HCLD2 Enhanced-Current Output Buffer CircuitsHeadphone Amplifier with 4-Pin XLR and Pentaconn Jack with Switchable Balanced/Active GroundMQA Full Decoder That Also Supports Digital InputsUp-Sampling FunctionBluetooth Receiver Supporting LDAC, Aptx™ HD High-Quality Audio Communication and Multipoint ConnectionBulk Pet USB Transfer Technology Enables Stable Data TransmissionMeticurous Vibration ControlTeac HR Audio Player, Which Supports 22.5mhz DSD Playback with Both Windows and Mac, Provided for FreeIncluded accessoriesPower cordRemote control (RC-1334)AAA Batteries for remote control x 2feet cushions x 3Owner's Manual (with warranty)

Completely redesigned 500 Series DAC/Preamp/Headphone amplifier with high-end 700 Series design concept in a compact A4-size package.The UD-507 is equipped with our proprietary “TRDD 5” discrete DAC,designed with musicality as the top priority.Following in the footsteps of TEAC's acclaimed 701 series, the new “TRDD 5” discrete DAC offers a clear soundstage and accurate imaging, providing listeners with a truly immersive musical experience.Fully BalancedDual Monaural Headphone AmplifierUD-507The UD-507 is a headphone amplifier featuring the TEAC-HCLD2 high current line driver, which is characterized by its high current supply capability.Compared to the previous model, the maximum output power has been greatlyimproved by strengthening the power supply, resulting in a generous driving power of 1,200mW + 1,200mW (balanced output at 100 ohm load), which is comparable to a dedicated headphone amplifier without DAC.The power amplifier gain can be switched between 3 positions (Low/Mid/High) to fine-tune the output to best match the sensitivity and impedance of the headphones.In a glance :Proprietary “TEAC Reference Discrete DAC: TRDD 5”In Addition to 44.1kHz and 48kHz Internal Clocks, 10MHz External Clock Input Is SupportedDual Monaural ConstructionFully Balanced Signal TransferTwo Large Toroidal Core Transformers / Non-feedback Power Supply CircuitPreamplifier with Analog Volume Control – 4 Digital Inputs and 2 Line Inputs (RCA/XLR)Improved TEAC-HCLD2 Enhanced-Current Output Buffer CircuitsHeadphone Amplifier with 4-Pin XLR and Pentaconn Jack with Switchable Balanced/Active GroundMQA Full Decoder That Also Supports Digital InputsUp-Sampling FunctionBluetooth Receiver Supporting LDAC, Aptx™ HD High-Quality Audio Communication and Multipoint ConnectionBulk Pet USB Transfer Technology Enables Stable Data TransmissionMeticurous Vibration ControlTeac HR Audio Player, Which Supports 22.5mhz DSD Playback with Both Windows and Mac, Provided for FreeIncluded accessoriesPower cordRemote control (RC-1334)AAA Batteries for remote control x 2feet cushions x 3Owner's Manual (with warranty)

Phono equalizing amplifier with dual monaural and fully-balanced input/output circuit design .The PE-505 is a phono equalizing amplifier with dual monaural and fully-balanced input/output circuits that support balanced MC input.The development of the PE-505 was achieved by relying on TEAC’s audio technology expertise, focusing on recording and playback, with the goal of accurately reproducing the original intent of the recording producers. The PE-505 will amplify even very faint audio signals picked up by the cartridge, process them without coloration, and then deliver them faithfully in order to keep the listener as close as possible to the original sound that was played before it was engraved on the master disc.The high precision RIAA correction circuit, as well as both DECCA and COLUMBIA curves are supported. In addition, selectable load resistance for MC cartridges and load capacity for MM cartridges are present; allowing users to optimize the settings for the type of cartridge used and for the condition of the record.Features at a glanceFull differential inputs/outputs circuitsHigh-precision RIAA EQ circuit achieves less than 0.05dB of deviationIndividual EQ curves for monaural records and ones with EQ from DECCA and COLUMBIABalanced MC inputSwitchable MC impedance (10, 22, 47, 100, 220, 470, 1kΩ)Switchable MM load-impedance capacity (0, 100, 220, 330pF)MC load-impedance measurement functionSwitchable MM/MC gain (High/Low)Subsonic detectionSubsonic filter (17Hz, –24dB/oct.)MONO function that mixes left and right channels as a monaural channelDEMAG function that de-magnetizes cartridge3-position pin-point feetGND terminalRoHS compliantFully-balanced circuit designFrom the head amplifier to the equalizing amplifier sections to the buffer amplifier section on the final output stage; the PE-505 employs a fully-balanced circuit design throughout all stages that amplifies, equalizes, and maintains signal purity of even the most extremely faint audio signals picked up by a cartridge.Even unbalanced signal on the conventional RCA input is converted to the differential processing mode right after the input terminals.Equalizing circuit on the differential cartridge outpAbsorbing errors on the balanced output, the differential output equalizing circuit delivers a more accurate audio signal. The differential output circuit that cross-multiplied the hot and cold outputs each other. As the result, both signals are equalized for a pure and natural audio signal delivery.High-precision RIAA circuitA newly developed NF-type equalizing amplifier achieves less than ±0.05dB of RIAA deviation.(20Hz to 20kHz)High Signal-to-Noise ratioThe PE-505 achieves 106dB on the RCA input*1, and 86dB on the XLR input*2, while the residual noise voltage reaches 10μV on the MM and 85μV on the MC*3 which are sophisticated.*1 MM *2 MC *3 XLR inputHigh-precision OLD EQ curvesAs well as the modern RIAA curve, individual curves on monaural records from DECCA and COLUMBIA issued before the RIAA curve was defined in 1955 are also supported.Versatile settings and unique measuring functionsThe PE-505 equips switchable load-capacity for MM cartridges and switchable load-resistance for MC cartridges. Furthermore, the load-resistance measuring function allows users to select an appropriate load-resistance by pressing the MEASURE key on the front panel to show the total load-resistance value including cable resistance on the gauge.Also, the Subsonic function shows subsonic signals less than 6Hz on the gauge, while the subsonic filter (17Hz, -24dB/octave) cuts unnecessary low frequency out of the hearing range.DEMAG function to refresh the cartridgesWith the quick demagnetize function, both magnetized iron cores of MC cartridges and the step-up transformer are demagnetized by playing back a vinyl record for as short as 30 seconds with the DEMAG position.

Phono equalizing amplifier with dual monaural and fully-balanced input/output circuit design .The PE-505 is a phono equalizing amplifier with dual monaural and fully-balanced input/output circuits that support balanced MC input.The development of the PE-505 was achieved by relying on TEAC’s audio technology expertise, focusing on recording and playback, with the goal of accurately reproducing the original intent of the recording producers. The PE-505 will amplify even very faint audio signals picked up by the cartridge, process them without coloration, and then deliver them faithfully in order to keep the listener as close as possible to the original sound that was played before it was engraved on the master disc.The high precision RIAA correction circuit, as well as both DECCA and COLUMBIA curves are supported. In addition, selectable load resistance for MC cartridges and load capacity for MM cartridges are present; allowing users to optimize the settings for the type of cartridge used and for the condition of the record.Features at a glanceFull differential inputs/outputs circuitsHigh-precision RIAA EQ circuit achieves less than 0.05dB of deviationIndividual EQ curves for monaural records and ones with EQ from DECCA and COLUMBIABalanced MC inputSwitchable MC impedance (10, 22, 47, 100, 220, 470, 1kΩ)Switchable MM load-impedance capacity (0, 100, 220, 330pF)MC load-impedance measurement functionSwitchable MM/MC gain (High/Low)Subsonic detectionSubsonic filter (17Hz, –24dB/oct.)MONO function that mixes left and right channels as a monaural channelDEMAG function that de-magnetizes cartridge3-position pin-point feetGND terminalRoHS compliantFully-balanced circuit designFrom the head amplifier to the equalizing amplifier sections to the buffer amplifier section on the final output stage; the PE-505 employs a fully-balanced circuit design throughout all stages that amplifies, equalizes, and maintains signal purity of even the most extremely faint audio signals picked up by a cartridge.Even unbalanced signal on the conventional RCA input is converted to the differential processing mode right after the input terminals.Equalizing circuit on the differential cartridge outpAbsorbing errors on the balanced output, the differential output equalizing circuit delivers a more accurate audio signal. The differential output circuit that cross-multiplied the hot and cold outputs each other. As the result, both signals are equalized for a pure and natural audio signal delivery.High-precision RIAA circuitA newly developed NF-type equalizing amplifier achieves less than ±0.05dB of RIAA deviation.(20Hz to 20kHz)High Signal-to-Noise ratioThe PE-505 achieves 106dB on the RCA input*1, and 86dB on the XLR input*2, while the residual noise voltage reaches 10μV on the MM and 85μV on the MC*3 which are sophisticated.*1 MM *2 MC *3 XLR inputHigh-precision OLD EQ curvesAs well as the modern RIAA curve, individual curves on monaural records from DECCA and COLUMBIA issued before the RIAA curve was defined in 1955 are also supported.Versatile settings and unique measuring functionsThe PE-505 equips switchable load-capacity for MM cartridges and switchable load-resistance for MC cartridges. Furthermore, the load-resistance measuring function allows users to select an appropriate load-resistance by pressing the MEASURE key on the front panel to show the total load-resistance value including cable resistance on the gauge.Also, the Subsonic function shows subsonic signals less than 6Hz on the gauge, while the subsonic filter (17Hz, -24dB/octave) cuts unnecessary low frequency out of the hearing range.DEMAG function to refresh the cartridgesWith the quick demagnetize function, both magnetized iron cores of MC cartridges and the step-up transformer are demagnetized by playing back a vinyl record for as short as 30 seconds with the DEMAG position.

An ultra-compact stereo power amplifier, powered by Hypex Ncore technology, designed to enable Bi-amping, or use in BTL (Bridge Tied Load/Bridged) mode .The AP-505 is a versatile stereo power amplifier based around a high-performance, TEAC-tuned, Hypex Ncore power amplifier module, housed within a compact and elegant case.Capable of operating in bi-amp and BTL (Bridge Tied Load/Bridged) modes, in addition to conventional stereo operation, the AP-505 produces a maximum 130W + 130W of output power in stereo/bi-amp modes and 250W in BTL/bridged mode. At its heart is an Ncore power amplifier module, made by Hypex of the Netherlands and specially tuned by TEAC’s R&D team, for superlative sound qualityAs for the exterior, lightweight aluminum-alloy panels cover a robust steel chassis. A pair of large level meters add visual interest when the amplifier is in action, while TEAC's patent-pending ‘Pin-point’ feet, located at three strategic positions on the underside, add incision to the sound, helping to create a more detailed and stable stereo image.Features at a glanceHypex Ncore power amplifier module, tuned by TEAC130W + 130W of max output power, or 250W in BTL/bridged modeCan operate in Stereo, Bi-Amp and BTL/bridged modesFully balanced circuit designCarefully selected high-quality components, exclusively designed for Hi-Fi applicationsLarge toroidal power transformer and Schottky barrier diodesComprehensive protection circuits (Surge, Over-voltage, Thermal)Patent-pending ‘Pin-point’ feet for easy installation (Japan Patent No.4075477, No.3778108)Large level metersPassive-cooling for silent operationA4-sized footprint and full-metal body for rigidity, stability and eleganceXLR Balanced and RCA Unbalanced analog audio inputs (one set of each)Wide-pitch, screw-type speaker terminalsAuto power-savingRoHS compliantLatest Hypex Ncore amplifier technology, tuned by TEACThe AP-505 employs a high-performance, energy-efficient Hypex Ncore power amplifier module which produces 130W + 130W in stereo/bi-amp modes or 250W in BTL mode. The module, which has undergone extensive listening tests before being carefully tuned and tweaked by our engineers, easily drives a wide range of speakers, delivering anything from a pianissimo to a fortissimo, and everything in between. In other words, it properly reproduces the dynamics of real music.Supporting Stereo, Bi-amp, and BTL modesNot only for conventional stereo mode with 130W + 130W of output power, this compact unit also provides versatile speaker drive modes, Bi-amp, and BTL modes by deploying a couple of AP-505 units side by side. The Bi-amp mode drives the woofer and tweeter independently, while the BTL mode produces 250W of output power in one channel.Full-metal, small-footprint body for rigidity, stability, and eleganceEvery external panel – at the front, top, and sides - is formed from high-grade aluminum alloy, firmly attached to the robust steel inner chassis. This method of construction helps reduce the transmission of mechanical vibration, ensuring that every single element inside the unit is allowed to perform at its best. Thanks to its convenient A4-sized footprint, the AP-505 easily slots into modern interiors where space efficiency is important, such as on a desktop. This is in stark contrast to most conventional bi-amp/BTL-capable power amplifiers which are usually bulky, full-width units.Fully-balanced designBy employing a fully-balanced circuit design from the input section to the output stage, the AP-505 keeps the audio signal as unadulterated as possible as it moves through the amplifier, the result being extremely low distortion levels and an excellent signal-to-noise ratio (assisted by the effective elimination of common-mode noise).Carefully selected components, exclusively designed for hi-fi applicationsAt the input stage, where sound quality is fundamentally defined, high-quality MUSES8820E dual op-amps are employed for both the XLR and RCA inputs. In the power supply section for the input stage, both the left and right channel rectifying circuits are completely independent of the power transformer onwards, and employ four, high-capacity, 4700μF capacitors on each channel (8 in total), achieving clear soundstage separation between channels.At the XLR input section, a well-designed circuit delivers excellent signal integrity, thanks in part to the elimination of coupling capacitors that can often lose audio information as a signal travels through them.An oversized toroidal power transformerIn the power supply, the AP-505 employs a high-capacity toroidal-core transformer, with Schottky barrier diodes in the rectifying circuit. Unlike conventional diodes, Schottky barrier diodes reduce rectifier noise, leading to a ‘cleaner’ supply and a more stable delivery of current.‘Pin-Point’ feet for easy installationThe AP-505 employs TEAC's patent-pending ‘Pin-Point’ feet. These comprise two separated metal sections in an integrated housing. One has a spiked top and is attached to the bottom of the chassis, the other is a basin-shaped base that hangs down from the spiked section, with a flange-shaped cup to simplify installation. As a result of the unique design, the ‘Pin-Point’ feet considerably minimize vibrations and resonance, by virtue of the fact that the unit is supported on just three points, with a very small surface contact area. This arrangement reduces mid and low-frequency muddiness so improving the soundstage and enhancing fine sonic detail.* Japan Patent numbers 4075477 and 3778108Passive-cooling design for silent operationIt makes no sense to design an amplifier that delivers excellent sound to a pair of speakers but which itself generates distracting operating noise from a cooling fan. From the outset, our engineers were determined to use a circuit and layout that would allow sufficient natural cooling, one that would allow the creation of a compact but powerful amplifier that didn’t need the help of a cooling fan.Dual analog level meters signal musical momentumAnalog level meters on the front panel move in response to signal levels, giving a visually pleasing confirmation that the amplifier is doing its job. A four-step dimmer (bright, mid, dim off) allows users to adjust the intensity of the display to their taste, while a switchable sensitivity (±0dB, +20dB, movement off) allows you to enjoy more, less, or even no meter movement if preferred.Naturally, even if the backlight is off and meter movement has been disabled, you are still able to tell the unit is on... by checking the position of the power switch!

An ultra-compact stereo power amplifier, powered by Hypex Ncore technology, designed to enable Bi-amping, or use in BTL (Bridge Tied Load/Bridged) mode .The AP-505 is a versatile stereo power amplifier based around a high-performance, TEAC-tuned, Hypex Ncore power amplifier module, housed within a compact and elegant case.Capable of operating in bi-amp and BTL (Bridge Tied Load/Bridged) modes, in addition to conventional stereo operation, the AP-505 produces a maximum 130W + 130W of output power in stereo/bi-amp modes and 250W in BTL/bridged mode. At its heart is an Ncore power amplifier module, made by Hypex of the Netherlands and specially tuned by TEAC’s R&D team, for superlative sound qualityAs for the exterior, lightweight aluminum-alloy panels cover a robust steel chassis. A pair of large level meters add visual interest when the amplifier is in action, while TEAC's patent-pending ‘Pin-point’ feet, located at three strategic positions on the underside, add incision to the sound, helping to create a more detailed and stable stereo image.Features at a glanceHypex Ncore power amplifier module, tuned by TEAC130W + 130W of max output power, or 250W in BTL/bridged modeCan operate in Stereo, Bi-Amp and BTL/bridged modesFully balanced circuit designCarefully selected high-quality components, exclusively designed for Hi-Fi applicationsLarge toroidal power transformer and Schottky barrier diodesComprehensive protection circuits (Surge, Over-voltage, Thermal)Patent-pending ‘Pin-point’ feet for easy installation (Japan Patent No.4075477, No.3778108)Large level metersPassive-cooling for silent operationA4-sized footprint and full-metal body for rigidity, stability and eleganceXLR Balanced and RCA Unbalanced analog audio inputs (one set of each)Wide-pitch, screw-type speaker terminalsAuto power-savingRoHS compliantLatest Hypex Ncore amplifier technology, tuned by TEACThe AP-505 employs a high-performance, energy-efficient Hypex Ncore power amplifier module which produces 130W + 130W in stereo/bi-amp modes or 250W in BTL mode. The module, which has undergone extensive listening tests before being carefully tuned and tweaked by our engineers, easily drives a wide range of speakers, delivering anything from a pianissimo to a fortissimo, and everything in between. In other words, it properly reproduces the dynamics of real music.Supporting Stereo, Bi-amp, and BTL modesNot only for conventional stereo mode with 130W + 130W of output power, this compact unit also provides versatile speaker drive modes, Bi-amp, and BTL modes by deploying a couple of AP-505 units side by side. The Bi-amp mode drives the woofer and tweeter independently, while the BTL mode produces 250W of output power in one channel.Full-metal, small-footprint body for rigidity, stability, and eleganceEvery external panel – at the front, top, and sides - is formed from high-grade aluminum alloy, firmly attached to the robust steel inner chassis. This method of construction helps reduce the transmission of mechanical vibration, ensuring that every single element inside the unit is allowed to perform at its best. Thanks to its convenient A4-sized footprint, the AP-505 easily slots into modern interiors where space efficiency is important, such as on a desktop. This is in stark contrast to most conventional bi-amp/BTL-capable power amplifiers which are usually bulky, full-width units.Fully-balanced designBy employing a fully-balanced circuit design from the input section to the output stage, the AP-505 keeps the audio signal as unadulterated as possible as it moves through the amplifier, the result being extremely low distortion levels and an excellent signal-to-noise ratio (assisted by the effective elimination of common-mode noise).Carefully selected components, exclusively designed for hi-fi applicationsAt the input stage, where sound quality is fundamentally defined, high-quality MUSES8820E dual op-amps are employed for both the XLR and RCA inputs. In the power supply section for the input stage, both the left and right channel rectifying circuits are completely independent of the power transformer onwards, and employ four, high-capacity, 4700μF capacitors on each channel (8 in total), achieving clear soundstage separation between channels.At the XLR input section, a well-designed circuit delivers excellent signal integrity, thanks in part to the elimination of coupling capacitors that can often lose audio information as a signal travels through them.An oversized toroidal power transformerIn the power supply, the AP-505 employs a high-capacity toroidal-core transformer, with Schottky barrier diodes in the rectifying circuit. Unlike conventional diodes, Schottky barrier diodes reduce rectifier noise, leading to a ‘cleaner’ supply and a more stable delivery of current.‘Pin-Point’ feet for easy installationThe AP-505 employs TEAC's patent-pending ‘Pin-Point’ feet. These comprise two separated metal sections in an integrated housing. One has a spiked top and is attached to the bottom of the chassis, the other is a basin-shaped base that hangs down from the spiked section, with a flange-shaped cup to simplify installation. As a result of the unique design, the ‘Pin-Point’ feet considerably minimize vibrations and resonance, by virtue of the fact that the unit is supported on just three points, with a very small surface contact area. This arrangement reduces mid and low-frequency muddiness so improving the soundstage and enhancing fine sonic detail.* Japan Patent numbers 4075477 and 3778108Passive-cooling design for silent operationIt makes no sense to design an amplifier that delivers excellent sound to a pair of speakers but which itself generates distracting operating noise from a cooling fan. From the outset, our engineers were determined to use a circuit and layout that would allow sufficient natural cooling, one that would allow the creation of a compact but powerful amplifier that didn’t need the help of a cooling fan.Dual analog level meters signal musical momentumAnalog level meters on the front panel move in response to signal levels, giving a visually pleasing confirmation that the amplifier is doing its job. A four-step dimmer (bright, mid, dim off) allows users to adjust the intensity of the display to their taste, while a switchable sensitivity (±0dB, +20dB, movement off) allows you to enjoy more, less, or even no meter movement if preferred.Naturally, even if the backlight is off and meter movement has been disabled, you are still able to tell the unit is on... by checking the position of the power switch!

Delivering all the dynamics of your music, a high performance integrated amplifier with balanced input capability .The AX-505 is a stereo integrated amplifier that delivers 130W + 130W of output power but occupies just an A4-size footprint.Features at a glance130W + 130W of max output power from a Hypex Ncore power amplifier module, tuned by TEACMUSES8920 op-amps for high quality soundIndependent resistor ladder-type volume controlsLarge capacity toroidal-core power transformer with Schottky barrier diodesCCLC headphone amplifier circuit for linear sound1/8inch (3.5mm) 4-pole headphone jack supporting ‘ground-separate’ connectionDual level meter with 4-step dimmable backlightPassive-cooling design for silent operationFull-metal body for rigidity, stability and eleganceCompact design with an A4-sized footprintXLR balanced analogue inputThree sets of unbalanced RCA analogue audio inputs with a wide-pitch connector layoutA set of gold-plated, screw-type speaker terminals compatible with AWG8 cable and banana plugsAuto power-savingRemote control includedRoHS compliantNcore power amplifier by Hypex, specially tuned by TEACThe AX-505 is based around a high-performance, energy-efficient Hypex Ncore power amplifier module which delivers 130W+ 130W of output power from a small unit. This isn’t a standard Ncore module… it has been carefully tuned by TEAC to deliver maximum musical expression from the full breadth of musical repertoire.Carefully selected parts, exclusively designed for hi-fi applicationsFrom MUSE op-amps in the analogue section - which fundamentally determines the amplifier’s sound quality - to ladder-resistor type volume controls, our engineers have carefully chosen all key components from ‘made for hi-fi’ ranges, wherever possible.XLR balanced inputsThe AX-505 is equipped with a pair of XLR balanced analogue audio inputs, designed to help minimise external noise picked up as an analogue audio signal travels down the interconnect cable.CCLC headphone amplifier circuit for maximum linearityThe AX-505 is also equipped with a 4-pole headphone output jack that supports ‘ground-separate’ connection for excellent channel separation during headphone listening. The CCLC (Coupling Capacitor-less Circuit) headphone amplifier circuit design, meanwhile, eliminates coupling condensers in the circuit’s output stage. This reduces sonic colouration during processing, so delivering a more authentic audio signal to your headphones.A high capacity toroidal-core power transformerIn the power supply section, the AX-505 employs a high capacity toroidal-core power transformer along with Schottky barrier diodes in the rectifying circuit. The advantage of Schottky barrier diodes over conventional types is that they supply cleaner and more stable current, reducing rectifier noise in every part of the amplifier’s circuitry.Passive-cooling design for silent operationIt makes no sense for an amplifier to deliver excellent sound to loudspeakers while generating spurious operating noise from a cooling fan. That is why our engineers paid special attention to the AX-505’s circuit and cabinet design, creating a parts layout that would allow for the natural removal of heat, so achieving a compact but powerful amplifier that doesn’t require a cooling fan.Full-metal body for rigidity, stability and eleganceIt’s not just the front panel that’s firmly attached to the robust steel inner chassis . the top and side panels are affixed to it, too. This high standard of construction helps reduce mechanical vibration via heavy parts. A compact design with an A4-sized footprint, the AX-505 fits comfortably into even the smallest of modern spaces.Plenty of inputs for maximum versatilityOn the rear panel, connectors are located with a wide pitch between them, in order to allow the use of interconnects with bulky plugs. Three set of RCA analogue inputs offer you the potential of creating a full-scale hi-fi system, even if you start off using the AX-505 as part of a relatively minimalist desktop PC audio set-up.The AX-505 is also equipped with a set of wide-pitch, diagonally offset (for easy wiring) screw-type speaker terminals, capable of accommodating high quality AWG8 gauge cables and banana plugs.User-friendly interface for ease of useIn order to provide a more tactile response, the AX-505 employs a volume control with a machined aluminum knob for precise volume control, while a classic toggle is used to switch the amplifier on and off. The remote control, topped with a luxurious aluminum cover, allows you to adjust volume in 0.5dB steps at moderate volumes.Dual level meters that track the pulse of your musicA pair of level meters that dance in time as volume levels change help add a visual dimension to your music while enhancing the amplifier’s considerable aesthetic appeal. A 4-step dimmer which can disable the meters or further emphasise movement (by increasing sensitivity by +20dB), can be chosen according to preference.Even if the level meters are disabled and the backlight is switched off, you can still easily tell if the unit is turned on or off from distance, simply by noting the position of the toggle-type power switch.

Delivering all the dynamics of your music, a high performance integrated amplifier with balanced input capability .The AX-505 is a stereo integrated amplifier that delivers 130W + 130W of output power but occupies just an A4-size footprint.Features at a glance130W + 130W of max output power from a Hypex Ncore power amplifier module, tuned by TEACMUSES8920 op-amps for high quality soundIndependent resistor ladder-type volume controlsLarge capacity toroidal-core power transformer with Schottky barrier diodesCCLC headphone amplifier circuit for linear sound1/8inch (3.5mm) 4-pole headphone jack supporting ‘ground-separate’ connectionDual level meter with 4-step dimmable backlightPassive-cooling design for silent operationFull-metal body for rigidity, stability and eleganceCompact design with an A4-sized footprintXLR balanced analogue inputThree sets of unbalanced RCA analogue audio inputs with a wide-pitch connector layoutA set of gold-plated, screw-type speaker terminals compatible with AWG8 cable and banana plugsAuto power-savingRemote control includedRoHS compliantNcore power amplifier by Hypex, specially tuned by TEACThe AX-505 is based around a high-performance, energy-efficient Hypex Ncore power amplifier module which delivers 130W+ 130W of output power from a small unit. This isn’t a standard Ncore module… it has been carefully tuned by TEAC to deliver maximum musical expression from the full breadth of musical repertoire.Carefully selected parts, exclusively designed for hi-fi applicationsFrom MUSE op-amps in the analogue section - which fundamentally determines the amplifier’s sound quality - to ladder-resistor type volume controls, our engineers have carefully chosen all key components from ‘made for hi-fi’ ranges, wherever possible.XLR balanced inputsThe AX-505 is equipped with a pair of XLR balanced analogue audio inputs, designed to help minimise external noise picked up as an analogue audio signal travels down the interconnect cable.CCLC headphone amplifier circuit for maximum linearityThe AX-505 is also equipped with a 4-pole headphone output jack that supports ‘ground-separate’ connection for excellent channel separation during headphone listening. The CCLC (Coupling Capacitor-less Circuit) headphone amplifier circuit design, meanwhile, eliminates coupling condensers in the circuit’s output stage. This reduces sonic colouration during processing, so delivering a more authentic audio signal to your headphones.A high capacity toroidal-core power transformerIn the power supply section, the AX-505 employs a high capacity toroidal-core power transformer along with Schottky barrier diodes in the rectifying circuit. The advantage of Schottky barrier diodes over conventional types is that they supply cleaner and more stable current, reducing rectifier noise in every part of the amplifier’s circuitry.Passive-cooling design for silent operationIt makes no sense for an amplifier to deliver excellent sound to loudspeakers while generating spurious operating noise from a cooling fan. That is why our engineers paid special attention to the AX-505’s circuit and cabinet design, creating a parts layout that would allow for the natural removal of heat, so achieving a compact but powerful amplifier that doesn’t require a cooling fan.Full-metal body for rigidity, stability and eleganceIt’s not just the front panel that’s firmly attached to the robust steel inner chassis . the top and side panels are affixed to it, too. This high standard of construction helps reduce mechanical vibration via heavy parts. A compact design with an A4-sized footprint, the AX-505 fits comfortably into even the smallest of modern spaces.Plenty of inputs for maximum versatilityOn the rear panel, connectors are located with a wide pitch between them, in order to allow the use of interconnects with bulky plugs. Three set of RCA analogue inputs offer you the potential of creating a full-scale hi-fi system, even if you start off using the AX-505 as part of a relatively minimalist desktop PC audio set-up.The AX-505 is also equipped with a set of wide-pitch, diagonally offset (for easy wiring) screw-type speaker terminals, capable of accommodating high quality AWG8 gauge cables and banana plugs.User-friendly interface for ease of useIn order to provide a more tactile response, the AX-505 employs a volume control with a machined aluminum knob for precise volume control, while a classic toggle is used to switch the amplifier on and off. The remote control, topped with a luxurious aluminum cover, allows you to adjust volume in 0.5dB steps at moderate volumes.Dual level meters that track the pulse of your musicA pair of level meters that dance in time as volume levels change help add a visual dimension to your music while enhancing the amplifier’s considerable aesthetic appeal. A 4-step dimmer which can disable the meters or further emphasise movement (by increasing sensitivity by +20dB), can be chosen according to preference.Even if the level meters are disabled and the backlight is switched off, you can still easily tell if the unit is turned on or off from distance, simply by noting the position of the toggle-type power switch.

Opening a window to music world on your desktop. A new experience of network audio starts with the NT-505-Xthat inherits our audio design know-hows and Internet technologies.Features at a glance Hi-Res audio playback supporting DSD512 (22.5MHz) and PCM 768kHz/32bit PCMDSD128 (5.6MHz) and PCM 192kHz/24bit Network streaming from NAS/PCESS Technology ES9038 Q2M converter each for left and right channels7 types of PCM digital filtersUp-conversion up to 24.5MHz DSD and 384kHz/32bit PCMDual on-board clocks for 44.1kHz and 48kHz frequencies10MHz external clock inputSupports MQA decodingSpotify, TIDAL, and Qobuz music subscription services*1Roon ReadyFront USB port supporting Hi-Res playback from USB flash driveBluetooth® receiver supporting LDAC™, Qualcomm® aptX™ HD, AAC and SBCOriginal TEAC-HCLD2 enhanced-current output buffer circuitDual monaural circuit designDual toroidal-core power transformers for each channelTEAC-QVCS quad volume control system1/8" (3.5mm) 4-pole stereo headphone jack supporting ground-separate driveFull-dot OLED display with dimmer functionNewly-developed “Stressless Foot” design with three support pointsSemi-floating design Top PanelBulk Pet*2 USB transferring technology with four transfer modes for various sound charactersFree TEAC HR Audio Player for Windows/MacFree TEAC HR Streamer app for iOS/Android devicesESS Technology ES9038 Q2M high-performance DAC supports resolutions up to 22.5MHz DSD and 768kHz/32bit PCMWe have employed one DAC chip, a crucial component for digital audio, in each of the stereo channels. The ESS Technology ES9038Q2M SABRE32 Reference DAC we use has a strong reputation in the high-end audio market. Using 32-bit HyperStream® II DAC architecture and Time Domain Jitter Eliminator (both of which are ESS original technologies), an outstanding dynamic range is realized, and linearity is increased in the D/A conversion. As a result, clear and accurate audio playback with superior dynamic characteristics has been made possible.Dual monaural circuit design and fully-balanced designA dual monaural circuit configuration is used throughout, from the power supply (including power transformers), to the D/A converters in the digital section and the Analog output stage. From the high-performance D/A converters to the massive toroidal-core power transformers, each element is configured for single channel processing. This prevents mutual interference effects while reproducing a rich acoustic expressiveness. In addition, the Analog audio signals of both the left and right channels are processed in full balanced mode soon after the D/A converters all the way to the output terminal, contributing to an improved S/N ratio and extended dynamic range.This allows the fantastic sense of air that Hi-Res formats possess to be processed and conveyed without any losses.Support for popular and convenient network functions, including OpenHome and Roon ReadyCommon control apps that support OpenHome can be used with the NT-505-X, which also supports this platform. Moreover, playlists on the NT-505-X can be managed using TEAC HR Streamer and other control apps that support OpenHome. Gapless playback is also supported.With support for Roon Ready, functions provided by RAAT (Roon Advanced Audio Transport), including high-quality audio playback, easy and convenient operation using apps, and multi-room synchronized playback, can be used without limits.* Support for Roon Ready will be added in a firmware update made available after product release.Supports Spotify Connect, TIDAL, Qobuz, and TuneInBy connecting the unit to a home network using a LAN cable, music files saved on NAS music servers and computers can be accessed and played back. In addition, this unit also supports the Spotify, TIDAL, and Qobuz subscription Internet music streaming services. These enable listening to tens of millions of lossless CD-quality (44.1kHz/16bit) music tracks.MQA decoder for master quality streamingIn order to achieve an Analog waveform closer to the original signal, the NT-505-X supports MQA decoding while also supporting high sampling rate Hi-Res formats like DSD512 (22.5MHz) and PCM 32bit/768kHz. The MQA decoder is a totally new technology that controls Analog waveforms with excellent precision (as fine as 5 microseconds) and it reproduces sound in a manner that is perceived to be as close as possible to the original (to human hearing).Furthermore, a high-efficiency compression algorithm makes huge Hi-Res audio files compact in size, so you will be able to enjoy Hi-Res audio sources regardless of the speed of your Internet connectionHigh-quality wireless audio streaming via Bluetooth®In addition to conventional SBC and AAC codecs, the NT-505-X also supports LDAC™ (24bit/96kHz Hi-Res audio transmission), and Qualcomm® aptX™ HD, a codec that uses 24bit/48kHz format transmission. These allow you to playback playlists on your smartphone and tablet wirelesslyHi-Res audio playback from USB flash driveThe USB port on the front panel allows you to playback Hi-Res audio formats including DSD128 (5.6MHz) and PCM 24bit/192kHz downloaded from Internet or digitally recorded with the SD-500HR.Dual onboard clocks for 44.1k and 48kHz, and an external clock inputInstead of referencing to an unstable and noisy PC clock during USB audio playback, a more accurate and on-board clock is generated by a high-precision, low phase-noise, audio-grade crystal oscillator for USB asynchronous transfer mode. The NT-505-X accommodates two on-board clocks exclusively for 44.1kHz and 48kHz sampling frequencies and applies the appropriate one to incoming digital signals - those that are multiples of 44.1k or 48k - to reproduce identical sound to the original by eliminating jitter effects on the audio signal.In addition, an external 10MHz clock input is also provided, to synchronize with an even higher-precision master clock generator, such as the TEAC CG-10M/CG-10M-A, for yet further upgraded audio playback with excellent sound quality.Up-conversion up to 384kHz/32bit PCM and 24.5MHz DSDEmploying RDOT-NEO (Refined Digital Output Technology NEO), a fluency algorithm that renders digital audio signals smoothly, the NT-505-X up-converts PCM digital signals up to 384kHz/32bit PCM and 24.5MHz DSD. With the up-conversion function activated, you will hear an improvement in quality, even with music that you are familiar with."Bulk Pet" USB transfer technology for enhanced audio qualityWhen transferring large volumes of digital data for Hi-Res audio sources through USB cables using conventional isochronous transfer mode, large variations can occur in the processing loads of the sending computer and the receiving USB DAC.This can cause sound to drop out and other problems to occur. However, with our new USB transmission technology - dubbed "Bulk Pet" - a fixed amount of data is transmitted constantly, levelling out the processing burden on both devices and contributing to stable data transmission.Changing the processing burden on the computer directly affects audio quality so users can select the setting they prefer (from four transmission modes).?"Bulk Pet" is a registered trademark of Interface Corporation. For more information about "Bulk Pet", please visit the Interface Corporation website.7 types of PCM digital filtersThere are seven types of PCM digital filters, allowing you to apply the filter that best matches the file format or type of music you're listening to. The filter can be changed at the touch of a button on the remote control, allowing you to enjoy the different sonic nuances of each filter.Dual high-capacity toroidal-core power transformersThe dual monaural theme continues. Two over-sized high-capacity toroidal-core power transformers are employed in the NT-505-X, supplying stable, individual current sources for each of the left and right channels. This means neither channel will be affected by changes in the power consumption of the other during digital processing.NT-505-XAnalog output circuits have been further refineImproved TEAC-HCLD2 enhanced-current output buffer amp circuitWe employed the TEAC-HCLD 2 for the analog output circuit. This is a further improved version of the TEAC-HCLD circuit enhanced-current output buffer amp that increases crucial current output capacity (HCLD: High Current Line Driver). This model now uses line buffer ICs with extremely high current output capacity. By using a positive-negative two-circuit structure for each channel, drive can be differential with balanced output and parallel with unbalanced output. Transmitting audio signals without degrading their dynamism becomes possible with increased current supply capacity.TEAC-QVCS four-circuit-structure high-precision volume control newly incorporated for preamp circuitsTEAC-QVCS (Quad Volume Control System) is used for the volume circuit. This electronic volume control is a variable gain amp type comprised of four discrete circuits for left, right, positive and negative (L+, L?, R+, R?). By placing the variable gain amp volume control, which processes in analog, in the audio signal path on the circuit board, issues with noise resulting from diverging wiring are avoided.Furthermore, this TEAC-QVCS enables volume adjustment in 0.5dB increments, allowing you to set the perfect volume for your audio system or headphones.Carefully crafted line amp section can also be used as a headphone amplifierThe improved TEAC-HCLD2 circuit also has high drive capability as a headphone amp enabling it to maximize the potential of a variety of types of headphones, starting with 600Ω high-impedance models. In addition, the NT-505-X supports the Ground Separate connection by separating circuit ground on both Left and Right channels from the amplifier section to the headphone jack, to improve channel separation that is crucial for headphone listening, while delivering clear sound with wide visible sound stage.NT-505-XPhysical design with extreme attention to detailAll-metal enclosure provides both vibration resistance and a stylish appearance in an A4 footprint that can fit on a deskSince the entire body is constructed from metal panels that are resistant to external noise, intrusion of electromagnetic noise generated by computers and other devices is suppressed. A clean internal environment with little noise has been realized even in conditions that are difficult for audio equipment. Furthermore, 8mm-thick aluminum panels covering both sides of the all-metal chassis provide a strong and stable structure that prevents twisting and bending. Moreover, being the size of an A4 page* (viewed from above), the unit can be placed on a desk, side table or other small space.*This excludes the connectors, knobs and other protrusions.Symmetrically laid out XLR and RCA output jacksThe NT-505-X is equipped with both balanced and unbalanced Analog audio outputs. A pair of XLR connectors and another pair of RCA connectors - each gold-plated - are symmetrically laid out, hinting at the dual monaural arrangement inside, and allowing a wide range of possible audio configurations. A wide-spaced pitch layout for the RCA outputs accommodates professional grade plugs with large-diameter shells. The NT-505-X has a total of 5 digital inputs: USB audio, coaxial, optical on the rear panel, and a combination jack on the front panel (for coaxial and optical, supporting PCM 24bit/192kHz and DSD64 (2.8MHz) in DoP format).Newly-developed Stressless Foot designOur newly-developed original Stressless Foot design with three support points enables stable placement of the unit so that it is not impacted by slight irregularities in the surface beneath it. Compared to the original feet used in previous designs, these feet are only partially fixed to the chassis. This design was developed based on the concept that by allowing the feet to vibrate freely, more natural sound reverberations could be achieved. The tops of the conical feet, which are made of machined steel, are attached so that they hang from the bottom of the chassis and swing freely when the unit is lifted. While maintaining a sense of placement like that of the pin-point spiked feet used by previous models, this design enables more natural rich reverberations.Semi-floating design Top PanelA semi-floating structure is newly used for the top panel. It has achieved a sound with an excellent sense of openness.Free TEAC HR Audio Player software for DSD512 playback on both Windows and MacThe next-generation Hi-Res formats, DSD512 (22.5MHz) and PCM 768kHz/32bit are supported via the TEAC HR Audio Player software for Windows and Mac. This software guarantees the best available playback quality with any combination of audio format and computer configuration via a single USB cable. All the user has to do is choose the NT-505-X from the pull-down menu showing target output devices. The TEAC HR Audio Player is downloadable from TEAC's web site, and is completely free to use.Free TEAC HR Streamer app for iOS/Android devicesSupporting Hi-Res audio formats up to 5.6MHz DSD and 192kHz PCM, this free app for iOS and Android devices allows you to control wireless streaming music playback from a device, NAS, computers and the Internet, along with rich graphic information such as album artwork.* Wi-Fi network is required to use the App

Condensed high-end audio design philosophy and audio design know-hows learned from over 6 decades of our experience in a small cabinet as small as an A4-sized footprint.Features at a glanceHi-Res audio playback supporting DSD512 (22.5MHz) and PCM 768kHz/32bit PCMAn ESS Technology ES9038Q2M converter each for left and right channelsDual on-board clocks for 44.1kHz and 48kHz frequencies7 types of PCM digital filtersUp-conversion up to 24.5MHz DSD and 384kHz/32bit PCM10MHz external clock inputBluetooth® receiver supporting LDAC™, Qualcomm® aptX™ HD, AAC and SBCOriginal TEAC-HCLD2 enhanced-current output buffer circuitDual monaural circuit designDual toroidal-core power transformers for each channelTEAC-QVCS quad volume control system4.4mm 5-polar Pentaconn*1 jack and dual 1/4” (6.3mm) TRS jacks for balanced and active-ground drivesFull-dot OLED display with dimmer functionNewly-developed “Stressless Foot” design with three support pointsSemi-floating design Top PanelBulk Pet*2 USB transferring technology with four transfer modes for various sound charactersFree TEAC HR Audio Player for Windows/MacESS Technology ES9038 Q2M high-performance DAC supports resolutions up to 22.5MHz DSD and 768kHz/32bit PCMEmployed one DAC chip, which is a crucial component for digital audio, in each of the stereo channels. The ESS Technology ES9038Q2M SABRE32 Reference DAC that we use has a strong reputation in the high-end audio market.Dual monaural circuit design and fully-balanced designA dual monaural circuit configuration is used throughout, from the power supply (including power transformers), to the D/A converters in the digital section and the Analog output stage. From the high-performance D/A converters to the massive toroidal-core power transformers, each element is configured for single channel processing.High-quality wireless audio streaming via Bluetooth®In addition to conventional SBC and AAC codecs, the UD-505-X also supports LDAC™ (24bit/96kHz Hi-Res audio transmission), and Qualcomm® aptX™ HD, a codec that uses 24bit/48kHz format transmission. These allow you to playback playlists on your smartphone and tablet wirelessly.Up-conversion up to 384kHz/32bit PCM and 24.5MHz DSDEmploying RDOT-NEO (Refined Digital Output Technology NEO), a fluency algorithm that renders digital audio signals smoothly, the UD-505-X up-converts PCM digital signals up to 384kHz/32bit PCM and 24.5MHz DSD. With the up-conversion function activated, you will hear an improvement in quality, even with music that you are familiar with.Dual high-capacity toroidal-core power transformersThe dual monaural theme continues. Two over-sized high-capacity toroidal-core power transformers are employed in the UD-505-X, supplying stable, individual current sources for each of the left and right channels. This means neither channel will be affected by changes in the power consumption of the other during digital processing.Analog output circuits have been further refinedImproved TEAC-HCLD2 enhanced-current output buffer amp circuitWe employed the TEAC-HCLD 2 for the analog output circuit. This is a further improved version of the TEAC-HCLD circuit enhanced-current output buffer amp that increases crucial current output capacity (HCLD: High Current Line Driver). This model now uses line buffer ICs with extremely high current output capacity.TEAC-QVCS four-circuit-structure high-precision volume control newly incorporated for preamp circuitsTEAC-QVCS (Quad Volume Control System) is used for the volume circuit. This electronic volume control is a variable gain amp type comprised of four discrete circuits for left, right, positive and negative (L+, L?, R+, R?). By placing the variable gain amp volume control, which processes in analog, in the audio signal path on the circuit board, issues with noise resulting from diverging wiring are avoided.Designed to bring out the maximum potential of your headphonesThe UD-505-X's headphone amplifier circuit provides balanced-drive by using the TEAC-HCLD2 circuit, – comprised of four output transistors for each left and right channel – for headphone output. With challenging 600Ω high-impedance headphones for example, the UD-505-X allows you to bring out the potential of these type of headphones.Active-ground drive offers a new headphone drive modeThe active-ground is a new driving mode that employs the principles of balanced connection. It forcefully drives the ground, by lowering the ground level to 0V, providing an ideal ground condition (rather than just connecting to the conventional ground). This means it also suppresses hum noise from the power supply and enhances the purity of silent pauses by lowering the noise floor. Subtle detail, such as the breathing of artists and the textures of sounds, will feel even more convincing.Symmetrically laid out XLR and RCA output jacksThe UD-505-X is equipped with both balanced and unbalanced Analog audio outputs. A pair of XLR connectors and another pair of RCA connectors - each gold-plated - are symmetrically laid out, hinting at the dual monaural arrangement inside, and allowing a wide range of possible audio configurations.Newly-developed Stressless Foot designOur newly-developed original Stressless Foot design with three support points enables stable placement of the unit so that it is not impacted by slight irregularities in the surface beneath it. Compared to the original feet used in previous designs, these feet are only partially fixed to the chassis.

Condensed high-end audio design philosophy and audio design know-hows learned from over 6 decades of our experience in a small cabinet as small as an A4-sized footprint.Features at a glanceHi-Res audio playback supporting DSD512 (22.5MHz) and PCM 768kHz/32bit PCMAn ESS Technology ES9038Q2M converter each for left and right channelsDual on-board clocks for 44.1kHz and 48kHz frequencies7 types of PCM digital filtersUp-conversion up to 24.5MHz DSD and 384kHz/32bit PCM10MHz external clock inputBluetooth® receiver supporting LDAC™, Qualcomm® aptX™ HD, AAC and SBCOriginal TEAC-HCLD2 enhanced-current output buffer circuitDual monaural circuit designDual toroidal-core power transformers for each channelTEAC-QVCS quad volume control system4.4mm 5-polar Pentaconn*1 jack and dual 1/4” (6.3mm) TRS jacks for balanced and active-ground drivesFull-dot OLED display with dimmer functionNewly-developed “Stressless Foot” design with three support pointsSemi-floating design Top PanelBulk Pet*2 USB transferring technology with four transfer modes for various sound charactersFree TEAC HR Audio Player for Windows/MacESS Technology ES9038 Q2M high-performance DAC supports resolutions up to 22.5MHz DSD and 768kHz/32bit PCMEmployed one DAC chip, which is a crucial component for digital audio, in each of the stereo channels. The ESS Technology ES9038Q2M SABRE32 Reference DAC that we use has a strong reputation in the high-end audio market.Dual monaural circuit design and fully-balanced designA dual monaural circuit configuration is used throughout, from the power supply (including power transformers), to the D/A converters in the digital section and the Analog output stage. From the high-performance D/A converters to the massive toroidal-core power transformers, each element is configured for single channel processing.High-quality wireless audio streaming via Bluetooth®In addition to conventional SBC and AAC codecs, the UD-505-X also supports LDAC™ (24bit/96kHz Hi-Res audio transmission), and Qualcomm® aptX™ HD, a codec that uses 24bit/48kHz format transmission. These allow you to playback playlists on your smartphone and tablet wirelessly.Up-conversion up to 384kHz/32bit PCM and 24.5MHz DSDEmploying RDOT-NEO (Refined Digital Output Technology NEO), a fluency algorithm that renders digital audio signals smoothly, the UD-505-X up-converts PCM digital signals up to 384kHz/32bit PCM and 24.5MHz DSD. With the up-conversion function activated, you will hear an improvement in quality, even with music that you are familiar with.Dual high-capacity toroidal-core power transformersThe dual monaural theme continues. Two over-sized high-capacity toroidal-core power transformers are employed in the UD-505-X, supplying stable, individual current sources for each of the left and right channels. This means neither channel will be affected by changes in the power consumption of the other during digital processing.Analog output circuits have been further refinedImproved TEAC-HCLD2 enhanced-current output buffer amp circuitWe employed the TEAC-HCLD 2 for the analog output circuit. This is a further improved version of the TEAC-HCLD circuit enhanced-current output buffer amp that increases crucial current output capacity (HCLD: High Current Line Driver). This model now uses line buffer ICs with extremely high current output capacity.TEAC-QVCS four-circuit-structure high-precision volume control newly incorporated for preamp circuitsTEAC-QVCS (Quad Volume Control System) is used for the volume circuit. This electronic volume control is a variable gain amp type comprised of four discrete circuits for left, right, positive and negative (L+, L?, R+, R?). By placing the variable gain amp volume control, which processes in analog, in the audio signal path on the circuit board, issues with noise resulting from diverging wiring are avoided.Designed to bring out the maximum potential of your headphonesThe UD-505-X's headphone amplifier circuit provides balanced-drive by using the TEAC-HCLD2 circuit, – comprised of four output transistors for each left and right channel – for headphone output. With challenging 600Ω high-impedance headphones for example, the UD-505-X allows you to bring out the potential of these type of headphones.Active-ground drive offers a new headphone drive modeThe active-ground is a new driving mode that employs the principles of balanced connection. It forcefully drives the ground, by lowering the ground level to 0V, providing an ideal ground condition (rather than just connecting to the conventional ground). This means it also suppresses hum noise from the power supply and enhances the purity of silent pauses by lowering the noise floor. Subtle detail, such as the breathing of artists and the textures of sounds, will feel even more convincing.Symmetrically laid out XLR and RCA output jacksThe UD-505-X is equipped with both balanced and unbalanced Analog audio outputs. A pair of XLR connectors and another pair of RCA connectors - each gold-plated - are symmetrically laid out, hinting at the dual monaural arrangement inside, and allowing a wide range of possible audio configurations.Newly-developed Stressless Foot designOur newly-developed original Stressless Foot design with three support points enables stable placement of the unit so that it is not impacted by slight irregularities in the surface beneath it. Compared to the original feet used in previous designs, these feet are only partially fixed to the chassis.

This desktop audio amplifier accommodates a compact amplifier module with Bluetooth® receiver and USB audio input to playback Hi-Res sound source. Only 215mm in width, ideal for high quality sound playback on TVs and notebook PCs .Features at a glanceConnecting from TV with a single HDMI cableSupporting DSD512 and PCM 384/32 Hi-Res audio formatsWide range of digital inputs, HDMI, USB-C, Coaxial, and OpticalUSB-C for versatile USB connection with PC, Smartphone and TabletBuilt-in Bluetooth® receiver supporting LDAC, and Qualcomm® aptX™ HDUSB-C for versatile USB connection with PC, Smartphone and TabletA two pairs of audio inputs for flexibilityHigh performance Ncore® power amplifier from Hypex4-pole Headphone output with Ground-separateCoupling Capacitor Less Circuit headphone amplifierMore natural headphone listening with CrossfeedMQA full decodingVarious DAC modes with SoCHigh-quality analog volume with ladder type attenuatorAsynchronous mode to eliminate USB transmission jitter“Bulk Pet” digital audio transmissionThree-point support stress-less feetBluetooth® multipoint connection for twoSubwoofer PreoutFull metal cabinet designConnecting from TV with a single HDMI cableThe only connection between the AI-303 and a TV is an HDMI cable. Supporting ARC/eARC and HDMI CEC, volume control and power on/off of the AI-303 can be controlled from a TV remote, while receiving PCM 192/24 Hi-Res audio as long as the TV supports the resolution. Thanks to its small footprint, installing the AI-303 on a TV cabinet is possible.* Please set the digital output to "PCM" in the output settings of the TV.Supporting DSD512 and PCM 384/32 Hi-Res audio formatsIn order to maximize studio master quality sound quality of the digital source, the D/A converter on the AI-303 equips two types of digital filters and x2Fs, x4Fs, and x8Fs up-conversion processing to pursue your preferred sound.Wide range of digital inputs, HDMI, USB-C, Coaxial, and OpticalConnections with the digital sources are up-to-dated. The AI-303 equips an HDMI for TV, a USB-C for PC/Laptop and Coaxial/Optical for conventional digital music players, maximizing potential of each digital source with the high performance D/A converter.Built-in Bluetooth® receiver supporting LDAC®, and Qualcomm® aptX™ HDThe Bluetooth® receiver is employed for easy wireless connection with a smartphone, supporting high-resolution wireless codecs including LDAC®, LHDC, and Qualcomm® aptX™ HD, in addition to other standard Bluetooth® codecs such as Qualcomm® aptX™, AAC, and SBC. The LEDs on the front panel indicate which codec is engaged when connection is established.USB-C for versatile USB connection with PC, Smartphone and TabletThe AI-303 also supports wide variety of digital devices such as smartphone/tablet and portable digital audio player that support USB Audio 2.0, via a self-powered USB-C port allowing auto device detect when the device equips a USB-C. Most Android devices and recent iPad Air/iPad Pro that equip USB-C port allow single USB-C cable connection without extra devices.*1 An additional USB Camera Adapter from Apple is required when connecting to an iPhone.*2 When connecting to an Android device, "OTG Connection" must be turned on or "USB Debug" must be turned on from the developer option menu.MQA full decodingThe AI-303 supports MQA full decoding to enjoy studio master quality sound, from any digital inputs USB-C, HDMI, Coaxial and Optical inputs from MQA streaming and MQA CD from CD player via digital connection.“Bulk Pet” digital audio transmissionWhen sending a huge amount of digital data of high-resolution sound sources through a USB cable, the conventional transmission method causes a large uneven processing load on both the sending PC and the receiving USB DAC, which may result in problems such as sound interruption. However, "Bulk Pet" realizes stable data transfer by averaging the processing load on both sides to transfer a certain amount of data consistently. Since the sound quality also changes as the load status of the PC changes, you are able to select your preferred sound quality from four pre-set transfer modes.Bluetooth® multipoint connection for twoThe built-in Bluetooth® receiver engages connections with two difference devices at the same time. For example, when playing songs from a smartphone, the AI-303 can switch to another just like input source select without having annoying reconnection steps.* Simultaneous playback is not supported.Asynchronous mode to eliminate USB transmission jitterWhen used as a USB DAC, the AI-303 operates in asynchronous mode, where the input signal timing is regulated by the on-board clock, the connection with PC/Laptop and the AI-303 realizes purer digital signal transmission without affecting USB transmission jitters.High-quality analog volume with ladder type attenuatorUnlike conventional volume circuit, the front volume circuit of the AI-303 is designed not to pass the music signal directly.By reading the value of the volume knob, the circuit reproduces the value with a resistive ladder type attenuator on the circuit board, thereby transmitting the music signal to the amplifier in the shortest path and maintaining the purity of the signal.

This desktop audio amplifier accommodates a compact amplifier module with Bluetooth® receiver and USB audio input to playback Hi-Res sound source. Only 215mm in width, ideal for high quality sound playback on TVs and notebook PCs .Features at a glanceConnecting from TV with a single HDMI cableSupporting DSD512 and PCM 384/32 Hi-Res audio formatsWide range of digital inputs, HDMI, USB-C, Coaxial, and OpticalUSB-C for versatile USB connection with PC, Smartphone and TabletBuilt-in Bluetooth® receiver supporting LDAC, and Qualcomm® aptX™ HDUSB-C for versatile USB connection with PC, Smartphone and TabletA two pairs of audio inputs for flexibilityHigh performance Ncore® power amplifier from Hypex4-pole Headphone output with Ground-separateCoupling Capacitor Less Circuit headphone amplifierMore natural headphone listening with CrossfeedMQA full decodingVarious DAC modes with SoCHigh-quality analog volume with ladder type attenuatorAsynchronous mode to eliminate USB transmission jitter“Bulk Pet” digital audio transmissionThree-point support stress-less feetBluetooth® multipoint connection for twoSubwoofer PreoutFull metal cabinet designConnecting from TV with a single HDMI cableThe only connection between the AI-303 and a TV is an HDMI cable. Supporting ARC/eARC and HDMI CEC, volume control and power on/off of the AI-303 can be controlled from a TV remote, while receiving PCM 192/24 Hi-Res audio as long as the TV supports the resolution. Thanks to its small footprint, installing the AI-303 on a TV cabinet is possible.* Please set the digital output to "PCM" in the output settings of the TV.Supporting DSD512 and PCM 384/32 Hi-Res audio formatsIn order to maximize studio master quality sound quality of the digital source, the D/A converter on the AI-303 equips two types of digital filters and x2Fs, x4Fs, and x8Fs up-conversion processing to pursue your preferred sound.Wide range of digital inputs, HDMI, USB-C, Coaxial, and OpticalConnections with the digital sources are up-to-dated. The AI-303 equips an HDMI for TV, a USB-C for PC/Laptop and Coaxial/Optical for conventional digital music players, maximizing potential of each digital source with the high performance D/A converter.Built-in Bluetooth® receiver supporting LDAC®, and Qualcomm® aptX™ HDThe Bluetooth® receiver is employed for easy wireless connection with a smartphone, supporting high-resolution wireless codecs including LDAC®, LHDC, and Qualcomm® aptX™ HD, in addition to other standard Bluetooth® codecs such as Qualcomm® aptX™, AAC, and SBC. The LEDs on the front panel indicate which codec is engaged when connection is established.USB-C for versatile USB connection with PC, Smartphone and TabletThe AI-303 also supports wide variety of digital devices such as smartphone/tablet and portable digital audio player that support USB Audio 2.0, via a self-powered USB-C port allowing auto device detect when the device equips a USB-C. Most Android devices and recent iPad Air/iPad Pro that equip USB-C port allow single USB-C cable connection without extra devices.*1 An additional USB Camera Adapter from Apple is required when connecting to an iPhone.*2 When connecting to an Android device, "OTG Connection" must be turned on or "USB Debug" must be turned on from the developer option menu.MQA full decodingThe AI-303 supports MQA full decoding to enjoy studio master quality sound, from any digital inputs USB-C, HDMI, Coaxial and Optical inputs from MQA streaming and MQA CD from CD player via digital connection.“Bulk Pet” digital audio transmissionWhen sending a huge amount of digital data of high-resolution sound sources through a USB cable, the conventional transmission method causes a large uneven processing load on both the sending PC and the receiving USB DAC, which may result in problems such as sound interruption. However, "Bulk Pet" realizes stable data transfer by averaging the processing load on both sides to transfer a certain amount of data consistently. Since the sound quality also changes as the load status of the PC changes, you are able to select your preferred sound quality from four pre-set transfer modes.Bluetooth® multipoint connection for twoThe built-in Bluetooth® receiver engages connections with two difference devices at the same time. For example, when playing songs from a smartphone, the AI-303 can switch to another just like input source select without having annoying reconnection steps.* Simultaneous playback is not supported.Asynchronous mode to eliminate USB transmission jitterWhen used as a USB DAC, the AI-303 operates in asynchronous mode, where the input signal timing is regulated by the on-board clock, the connection with PC/Laptop and the AI-303 realizes purer digital signal transmission without affecting USB transmission jitters.High-quality analog volume with ladder type attenuatorUnlike conventional volume circuit, the front volume circuit of the AI-303 is designed not to pass the music signal directly.By reading the value of the volume knob, the circuit reproduces the value with a resistive ladder type attenuator on the circuit board, thereby transmitting the music signal to the amplifier in the shortest path and maintaining the purity of the signal.