Grimm Audio

We are convinced that smart integration of functions yields higher audio quality. The MU2 combines a music streamer with a superb DAC and a reference quality analog pre amp. Its built-in DAC takes full advantage of the Grimm Audio low jitter clock and high performance FPGA processor. A relay based analog volume control enables the MU2 to become the true ‘hub’ of your hifi system for both digital and analog sources. Just like with its sister product, the ‘digital output' MU1 a Roon Core server is on board so no external computer is needed to enjoy perfect streaming. “The MU2 offers full integration of functions, from Roon to analog volume control, with revolutionary sound quality.”At the heart of the MU2, Grimm Audio’s proprietary Major DAC can be found. It is of a groundbreaking discrete design that makes optimal use of our own FPGA board. In a unique way our high resolution Pure Nyquist upsampling filters are combined with a fundamentally flawless 11th order noise shaper of 1.5 bit.As a result the MU2 reproduces micro-details so well that it allows a deep emotional connection to the musical performance. The stereo image is of groundbreaking quality. Its serenity invites prolonged listening sessions. If you love your loudspeakers and power amplifiers but long for a fundamental update in sound quality and streamer experience, the MU2 is designed for you.

Grimm Audio TPR ‘Twisted Pair Reference’ cables are developed with physics in mind. Their design focuses on high RF immunity and low microphonics. The perfect symmetry of the cross-section and heavy shielding contribute to high RF immunity. Low microphonics is provided by a special interface layer under the shield and other construction details.

LS1be upgrade – brings LS1 versions to LS1be levelThe Grimm Audio LS1 is the most technologically advanced loudspeaker system ever!A good monitor combines a high degree of accuracy with untrammeled musicality. There aren't many of those around - common wisdom has it that you can have one or the other but never both. The LS1 is the first monitor to prove conventional wisdom wrong.By integrating top quality digital signal processing, converters and amplifiers in one of the speakers' legs, Grimm Audio was able to apply technical strategies no one had used before. As a consequence, the LS1 is not just a loudspeaker, but a complete audio system that only needs an analog or digital line source to perform.“This speaker is explicitly for those who want the most neutral and transparent sound reproduction, no corners were cut.”True accuracy is about getting all the bits in the right place: not losing anything, not adding anything either. The LS1 offers this accuracy, reproducing a truly musical recording accurately, with all beauty intact. At the same time, the LS1 will also reproduce any imperfection, giving you all the information you need to get it right. These qualities make the LS1 an ideal monitor for both mastering and mixing.Don't let the stylish industrial design and finish fool you: the shape of this loudspeaker is the outcome of thorough psychoacoustical and acoustical research. Its small sealed box (14 litres) is much wider than it is deep, is designed to provide an effective baffle down to around 250 Hz.That way, the LS1 achieves a reasonable constant directivity in 2π space above 250 Hz (with a natural and progressive “narrowing” of its high frequency off-axis response) minimizing many of the listening room’s detrimental effects (Psychoacoustics tells us that below about 300 Hz the ear will no longer clearly discern direct sound, first reflections or reverberant sound), while below 250 Hz the speaker gradually transitions to omnidirectional.“The wide baffle halves the volume into which the sound is radiated, thereby halving room problems as well. The cylindrical sides eliminate the classical "big box" colouration that is caused by edge diffractions.”The LS1 is suspended between two half cylinders that combat diffraction and function as an integral two-legged floor stand. An 8" magnesium woofer and a 1" dome tweeter divide the work between them. Smart use of DSP linearizes the frequency response and allows for a controlled bass response down to 35 Hz.Housed in one of the two legs are a 48/76-bit DSP, digital I/O, AD/DA converters, the same clock circuit as Grimm’s own CC1 master clock and the drive electronics, encompassing two 180W Class D power amplifiers of the groundbreaking Hypex NCore type.The concept of the LS1 draws maximum benefit from intelligent application of DSP technology. An IIR crossover imposes exact LR4 acoustic slopes crossing at 1550 Hz, and the phase is subsequently corrected using an idealised inverted all-pass filter, resulting in a maximally linear phase response without any pre-echo’s. This removes the “digital loudspeaker sound signature” typical of the more ubiquitous impulse inverted FIR designs.“The waveguide tweeter, the perfectly pistonic woofer (both by the world famous Seas company) and the very low crossover frequency insure that the sound is radiated in an unusually wide and even manner.Grimm LS1’s carefully controlled acoustics form the basis for the active DSP based filter which welds the driver responses together into the most even-handed frequency response and the fastest impulse response you'll ever hear.”The LS1 is also a very practical loudspeaker. Its digital input allows them to be connected without further ado to network players like Squeezebox or Sonos, or to a Mac or PC using the included USB converter. The pictures on the right hand show a few options.Despite their compact size, these floor standing speakers are clearly intended as main monitors in mastering studios and mixing rooms that have space to put free-standing speakers. The DSP controlled analog subwoofer output allows for easy integration with stereo subwoofers, for those that need high SPL performance below 40 Hz.By selecting Grimm’s own LS1s subwoofers, perfect integration with the main system is obtained, effectively turning the LS1 into a threeway system.More info can be found at the LS1 remote and the LS1s subwoofer page.For Measurement Charts (both in-house and third party – German Audio Magazine’s May 2013 issue) and photos of the LS1 please refer to the pictures section of this page.Features:Unidirectional down to 250 HzDSP controlled frequency curveWell-behaved off-axis responseDigital and analog audio inputsFiltered analog subwoofer outputFail safe due to excursion and thermal limiterMidi control of volume and settingsSuper low distortion NCore class D power ampsAudiophile quality Seas driversRemote control optionDifferent color scheme options Specifications:·        Frequency response: 55Hz-30kHz +/-0.5dB. 45Hz-40kHz -3dB(Low corner is user-settable between 35 Hz and 100 Hz, Q=0.7 or 0.5)With the addition of the LS1s Subwoofers, the LS1 can perform almost down to the infrasonic range·        Deviation from minimum phase +/-2°·        Amplifier power: 2x180W·        Max SPL: 109dB/1m·        SNR: 114dB (unweighted)·        Crossover function: 1.55 kHz LR4, sum corrected to minimum phase.·        Latency: 2ms·        Internal volume: 14 litres·        Height: 1150mm, 1450mm - available on demand.·        Width, depth: 520mm X 160mmFurther Resources:·        Download the LS1 PC remote software

There are many USB audio interfaces on the market but few of them are designed with both the sound quality and the specific use case in mind.The Grimm Audio UC1 is a mid price USB interface and monitor controller that has a different approach. It is an ideal match with the Grimm Audio LS1 or PMC monitoring systems, and works great with other active loudspeakers too. “The ‘Universal Converter’ UC1 solves all your monitoring needs. It has outputs for analog and digital destinations and offers analog and digital loops with LS1 quality converters.” Present day use cases have been the premier focus from the first UC1 sketches onwards. This led to an unusual design with remarkable flexibility.When mixing and mastering, not all inputs and outputs are equal. The UC1 offers 18 channels of USB I/O of which some are dedicated to monitoring and others to re-recording. With the second USB ‘i-put’ on the front there is no sample rate and word length restriction when using your iPad or iPhone. The i-put also serves as a convenient stereo USB input for laptops.

Every set (except the LS1a) also comes with a USB interface that facilitate connection of a Windows or Mac PC. It can be used to play audio from the computer directly into the LS1. Mac’s have native support, PC’s require a special driver. Via the same USB connection, the LS1 remote software can be used to setup the system. An LS1i can also be used as generic USB audio interface by people that need a high performance two channel digital audio interface.

The SB1 with ‘DMF’ is a technological marvel. By applying ‘Digital Motional Feedback’, a control technology from the renowned Dutch high-tech industry, it became possible to achieve exceptionally low levels of distortion and full dynamic control. With an SB1 added for the bass frequencies, the LS1 system offers low distortion over the full audio band and redefines the term ‘transparency’. This is bass control like you’ve never experienced before.“Digital Motional Feedback offers bass control like you’ve never experienced before.”At frequencies below 100 Hz loudspeaker drivers need to move a vast amount of air and therefore have high excursion levels, while also the fundamental resonance – which is present in any loudspeaker – induces unwanted delayed effects. The result is that all conventional loudspeakers exhibit a rising distortion in the bass region with additional “thickening” of the bass by the resonance.In electronics, feedback is used to minimise distortion. To apply feedback in electro-mechanical systems like an active loudspeaker, an acceleration sensor needs to be mounted on the cone to monitor its motions. This so called “Motional Feedback” technology has been presented a few times before in history but the precision and control as found in the Grimm Audio SB1 is unique. By adding smart digital processing and current drive, the low distortion of the already high-performance aluminium woofer is further reduced by as much as 30 dB, solving all problems that are related to low frequency resonances and distortion.The SB1 sub is a perfect partner for the LS1v2 and an excellent match for the LS1be. It is even a smart extension for the LS1a. A switch facilitates use of the SB1 with third party systems, so the virtues of Digital Motional Feedback can be enjoyed by many.

The MU1 is the ultimate digital music source. Combined with the LS1, it forms a peerlessly elegant High-End audio system. We wanted to develop the most accurate audio source we could imagine. In our experience, the human hearing system shows an incredible sensitivity to anomalies. Even unimaginably small aberrations appear to be audible. In principle, digital audio does offer perfect reproduction. Its sonic quality, however, is limited by the implementation accuracy of the physical and mathematical laws that affect the conversion from one format to another. Grimm Audio strives to bring you confidence that all technical details are taken care of to the greatest extent so that the reproduction system steps out of the way of the music. With the MU1, our goal was to set a new benchmark in music player design. The Linux-based computer system brings solid data integrity. Our in-house-designed FPGA interface board, which forms the heart of the MU1, offers breakthrough performance levels in format conversion and receives automatic updates whenever we have pushed the boundaries again. Needless to say, the MU1 features our trademark ultra-low jitter clock. This is a music player worthy of the name Grimm Audio. Once excellent sound quality is ensured, the quality of a music player is then defined by the user experience. For this, we partnered with Roon Labs, who in our opinion are in the lead when it comes to a rich and engaging music experience that appeals to your whole family. The MU1 runs the Roon Core server, so no extra installs are necessary. Just pick up your tablet and experience the music. For customers who prefer to only run a simple playback system without Roon’s extras, we will offer a solid alternative.  The MU1 combines seamlessly with the LS1 playback system. Of course, the virtues of the MU1 can also be realized with DACs from other manufacturers. Because we love to create a stunning look for our equipment, the boundlessly versatile system is housed in a cabinet of minimalistic elegance, so the MU1 will easily become the gem of your living room. TECHNICAL SPECIFICATIONS: Roon Core and Roon End Point integrated ultra high up- and downsampling precision ultra low clock jitter seamless integration with LS1 series excellent source for 3rd party DACs all sample rates and formats supported surround playback option with 6 digital output channels (soon) AES, spdif and optical digital stereo inputs high performance FM receiver (soon) external USB and NAS storage, optional internal SSD Tidal and Qobuz support Spotify and Tidal Connect support (soon) 355 x 85 x 295mm (WxHxD) 5 year limited warranty

The beautifully crafted LS1r remote control is part of the LS1 hifi system. It features volume control, source selection and mute, just with one large dial. Two extra digital audio sources can be connected directly to the remote. When placed at a distance, a regular IR remote may be used for wireless control.

Ο Άρχοντας του ΧρονισμούΤο Master Clock CC2 της Grimm Audio φέρνει την απίστευτη σταθερότητα χρονισμού του Αναλογικοψηφιακού μετατροπέα AD1 στο σύστημά σας. Το CC2 δέχεται σήμα Word Clock και διανέμει υπερυψηλής ποιότητας Word Clock σε κάθε συσκευή σας. Εναλλακτικά, το CC2 μπορεί να επαναχρονίζει (reclocking) και να μειώνει (de-jittering) τις διακυμάνσεις χρονισμού (jitter) της ψηφιακής σύνδεσης s/pdif ανάμεσα στο CD transport ή media serverκαι στο DAC (με κάθε CC2 παρέχεται ένα σετ καλωδίων μετατροπής RCA- XLR). Τώρα κάθε studio ή high end σύστημα μπορεί να επωφεληθεί από μερικά από τα ξεχωριστά χαρακτηριστικά του AD1 όπως η απόλυτη μουσική ροή και η τονική σταθερότητα.Πολλοί άνθρωποι γνωρίζουν για τη σημασία του ταλαντωτή σε εξοπλισμό ψηφιακού ήχου. Παίζει σημαντικό ρόλο στην επίτευξη ποιοτικού ήχου. Ο ταλαντωτής κατευθύνει τη διαδικασία δειγματοληψίας στους μετατροπείς και μπορεί συνεπώς να θεωρηθεί ως αγωγός του όλου συστήματος. Χρησιμοποιώντας ένα εξωτερικό ρολόι συχνά βελτιώνει την ποιότητα μιας κάρτας ήχου. Αυτό σχετίζεται με την βραχυπρόθεσμη σταθερότητα του ρολογιού, με άλλα λόγια: το ποσό του jitter.Εάν θέλετε ο μετατροπέας σας να ακούγεται διαφανής , το κύκλωμα ταλαντωτή της Grimm θα είναι η πρώτη σας επιλογή. Έχει αντικειμενικά το χαμηλότερο jitter σε σχέση με οποιαδήποτε pro συσκευή clock στην αγορά.Είτε εργάζεστε σε ένα στούντιο ηχογράφησης, σε ένα mastering στούντιο ή μιξάρετε ζωντανό ήχο, το CC2  εγγυάται τη βέλτιστη ποιότητα ήχου. Οι πελάτες που χρησιμοποιούν το clock της Grimm Audio λένε οτι έχει "εξαιρετική λεπτομέρεια και απεικόνιση" και "μια χειροπιαστή αύξηση της φυσικότητας, την επέκτασης και της χωρικής κατανομής"  Με το CC2, η  κορυφαία ποιότητα  απόδοσηs μπορεί να γίνει κτήμα του καθενός.Όπως όλα τα προϊόντα της Grimm Audio, το CC2 ξεχωρίζει για την κομψότητα του σχεδιασμού και την ποιότητα της κατασκευής του. Χαρακτηριστικά:ultra-low jitter clock source2 word clock outputssample rates from 44.1kHz up to 192kHzsmall form factor for portabilityoptional 19" rack mount  

The Grimm Audio  LS1 is the most technologically advanced loudspeaker system ever!This top class music playback system features now a new ultra light Berylium tweeter with a CNC milled aluminium waveguide, jointly developed by Grimm Audio and Seas. We selected Hi-Macs for the new cabinets, a modern and very rigid material, and it looks great too! A good monitor combines a high degree of accuracy with untrammeled musicality. There aren't many of those around - common wisdom has it that you can have one or the other but never both. The LS1 is the first monitor to prove conventional wisdom wrong.By integrating top quality digital signal processing, converters and amplifiers in one of the speakers' legs, Grimm Audio was able to apply technical strategies no one had used before. As a consequence, the LS1 is not just a loudspeaker, but a complete audio system that only needs an analog or digital line source to perform.“This speaker is explicitly for those who want the most neutral and transparent sound reproduction, no corners were cut.”True accuracy is about getting all the bits in the right place: not losing anything, not adding anything either. The LS1 offers this accuracy, reproducing a truly musical recording accurately, with all beauty intact. At the same time, the LS1 will also reproduce any imperfection, giving you all the information you need to get it right. These qualities make the LS1 an ideal monitor for both mastering and mixing.Don't let the stylish industrial design and finish fool you: the shape of this loudspeaker is the outcome of thorough psychoacoustical and acoustical research. Its small sealed box (14 litres) is much wider than it is deep, is designed to provide an effective baffle down to around 250 Hz.That way, the LS1 achieves a reasonable constant directivity in 2π space above 250 Hz (with a natural and progressive “narrowing” of its high frequency off-axis response) minimizing many of the listening room’s detrimental effects (Psychoacoustics tells us that below about 300 Hz the ear will no longer clearly discern direct sound, first reflections or reverberant sound), while below 250 Hz the speaker gradually transitions to omnidirectional.“The wide baffle halves the volume into which the sound is radiated, thereby halving room problems as well. The cylindrical sides eliminate the classical "big box" colouration that is caused by edge diffractions.”The LS1 is suspended between two half cylinders that combat diffraction and function as an integral two-legged floor stand. An 8" magnesium woofer and a 1" dome tweeter divide the work between them. Smart use of DSP linearizes the frequency response and allows for a controlled bass response down to 35 Hz.Housed in one of the two legs are a 48/76-bit DSP, digital I/O, AD/DA converters, the same clock circuit as Grimm’s own CC1 master clock and the drive electronics, encompassing two 180W Class D power amplifiers of the groundbreaking Hypex NCore type.The concept of the LS1 draws maximum benefit from intelligent application of DSP technology. An IIR crossover imposes exact LR4 acoustic slopes crossing at 1550 Hz, and the phase is subsequently corrected using an idealised inverted all-pass filter, resulting in a maximally linear phase response without any pre-echo’s. This removes the “digital loudspeaker sound signature” typical of the more ubiquitous impulse inverted FIR designs.“The waveguide tweeter, the perfectly pistonic woofer (both by the world famous Seas company) and the very low crossover frequency insure that the sound is radiated in an unusually wide and even manner.Grimm LS1’s carefully controlled acoustics form the basis for the active DSP based filter which welds the driver responses together into the most even-handed frequency response and the fastest impulse response you'll ever hear.”The LS1 is also a very practical loudspeaker. Its digital input allows them to be connected without further ado to network players like Squeezebox or Sonos, or to a Mac or PC using the included USB converter. The pictures on the right hand show a few options.Despite their compact size, these floor standing speakers are clearly intended as main monitors in mastering studios and mixing rooms that have space to put free-standing speakers. The DSP controlled analog subwoofer output allows for easy integration with stereo subwoofers, for those that need high SPL performance below 40 Hz.By selecting Grimm’s own LS1s subwoofers, perfect integration with the main system is obtained, effectively turning the LS1 into a threeway system.More info can be found at the LS1 remote and the LS1s subwoofer page.For Measurement Charts (both in-house and third party – German Audio Magazine’s May 2013 issue) and photos of the LS1 please refer to the pictures section of this page.Features:Unidirectional down to 250 HzDSP controlled frequency curveWell-behaved off-axis responseDigital and analog audio inputsFiltered analog subwoofer outputFail safe due to excursion and thermal limiterMidi control of volume and settingsSuper low distortion NCore class D power ampsAudiophile quality Seas driversRemote control optionDifferent color scheme options Specifications:·         Frequency response: 55Hz-30kHz +/-0.5dB. 45Hz-40kHz -3dB(Low corner is user-settable between 35 Hz and 100 Hz, Q=0.7 or 0.5)With the addition of the LS1s Subwoofers, the LS1 can perform almost down to the infrasonic range·         Deviation from minimum phase +/-2°·         Amplifier power: 2x180W·         Max SPL: 109dB/1m·         SNR: 114dB (unweighted)·         Crossover function: 1.55 kHz LR4, sum corrected to minimum phase.·         Latency: 2ms·         Internal volume: 14 litres·         Height: 1150mm, 1450mm - available on demand.·         Width, depth: 520mm X 160mmFurther Resources:·         Download the LS1 PC remote software

The Grimm Audio  LS1 is the most technologically advanced loudspeaker system ever!  The LS1a is a reference system at somewhat limited budget having an aluminium woofer instead of the magnesium woofer of the original LS1.This top class music playback system features now a new ultra light Berylium tweeter with a CNC milled aluminium waveguide, jointly developed by Grimm Audio and Seas. We selected Hi-Macs for the new cabinets, a modern and very rigid material, and it looks great too! A good monitor combines a high degree of accuracy with untrammeled musicality. There aren't many of those around - common wisdom has it that you can have one or the other but never both. The LS1 is the first monitor to prove conventional wisdom wrong.By integrating top quality digital signal processing, converters and amplifiers in one of the speakers' legs, Grimm Audio was able to apply technical strategies no one had used before. As a consequence, the LS1 is not just a loudspeaker, but a complete audio system that only needs an analog or digital line source to perform.“This speaker is explicitly for those who want the most neutral and transparent sound reproduction, no corners were cut.”True accuracy is about getting all the bits in the right place: not losing anything, not adding anything either. The LS1 offers this accuracy, reproducing a truly musical recording accurately, with all beauty intact. At the same time, the LS1 will also reproduce any imperfection, giving you all the information you need to get it right. These qualities make the LS1 an ideal monitor for both mastering and mixing.Don't let the stylish industrial design and finish fool you: the shape of this loudspeaker is the outcome of thorough psychoacoustical and acoustical research. Its small sealed box (14 litres) is much wider than it is deep, is designed to provide an effective baffle down to around 250 Hz.That way, the LS1 achieves a reasonable constant directivity in 2π space above 250 Hz (with a natural and progressive “narrowing” of its high frequency off-axis response) minimizing many of the listening room’s detrimental effects (Psychoacoustics tells us that below about 300 Hz the ear will no longer clearly discern direct sound, first reflections or reverberant sound), while below 250 Hz the speaker gradually transitions to omnidirectional.“The wide baffle halves the volume into which the sound is radiated, thereby halving room problems as well. The cylindrical sides eliminate the classical "big box" colouration that is caused by edge diffractions.”The LS1 is suspended between two half cylinders that combat diffraction and function as an integral two-legged floor stand. An 8" magnesium woofer and a 1" dome tweeter divide the work between them. Smart use of DSP linearizes the frequency response and allows for a controlled bass response down to 35 Hz.Housed in one of the two legs are a 48/76-bit DSP, digital I/O, AD/DA converters, the same clock circuit as Grimm’s own CC1 master clock and the drive electronics, encompassing two 180W Class D power amplifiers of the groundbreaking Hypex NCore type.The concept of the LS1 draws maximum benefit from intelligent application of DSP technology. An IIR crossover imposes exact LR4 acoustic slopes crossing at 1550 Hz, and the phase is subsequently corrected using an idealised inverted all-pass filter, resulting in a maximally linear phase response without any pre-echo’s. This removes the “digital loudspeaker sound signature” typical of the more ubiquitous impulse inverted FIR designs.“The waveguide tweeter, the perfectly pistonic woofer (both by the world famous Seas company) and the very low crossover frequency insure that the sound is radiated in an unusually wide and even manner.Grimm LS1’s carefully controlled acoustics form the basis for the active DSP based filter which welds the driver responses together into the most even-handed frequency response and the fastest impulse response you'll ever hear.”The LS1 is also a very practical loudspeaker. Its digital input allows them to be connected without further ado to network players like Squeezebox or Sonos, or to a Mac or PC using the included USB converter. The pictures on the right hand show a few options.Despite their compact size, these floor standing speakers are clearly intended as main monitors in mastering studios and mixing rooms that have space to put free-standing speakers. The DSP controlled analog subwoofer output allows for easy integration with stereo subwoofers, for those that need high SPL performance below 40 Hz.By selecting Grimm’s own LS1s subwoofers, perfect integration with the main system is obtained, effectively turning the LS1 into a threeway system.More info can be found at the LS1 remote and the LS1s subwoofer page.For Measurement Charts (both in-house and third party – German Audio Magazine’s May 2013 issue) and photos of the LS1 please refer to the pictures section of this page.Features:Unidirectional down to 250 HzDSP controlled frequency curveWell-behaved off-axis responseDigital and analog audio inputsFiltered analog subwoofer outputFail safe due to excursion and thermal limiterMidi control of volume and settingsSuper low distortion NCore class D power ampsAudiophile quality Seas driversRemote control optionDifferent color scheme options Specifications:·         Frequency response: 55Hz-30kHz +/-0.5dB. 45Hz-40kHz -3dB(Low corner is user-settable between 35 Hz and 100 Hz, Q=0.7 or 0.5)With the addition of the LS1s Subwoofers, the LS1 can perform almost down to the infrasonic range·         Deviation from minimum phase +/-2°·         Amplifier power: 2x180W·         Max SPL: 109dB/1m·         SNR: 114dB (unweighted)·         Crossover function: 1.55 kHz LR4, sum corrected to minimum phase.·         Latency: 2ms·         Internal volume: 14 litres·         Height: 1150mm, 1450mm - available on demand.·         Width, depth: 520mm X 160mmFurther Resources:·         Download the LS1 PC remote software

The Master of Timing Grimm Audio’s CC1 V2 brings the incredible clock stability of the AD1 to your current setup! The CC1 V2 accepts Word Clock and distributes a super high quality Word Clock sync to all equipment in your system. Alternatively, use the CC1 to reclock and de-jitter the s/pdif digital audio connection between your CD transport or media server and DAC (a set of XLR-RCA conversion cables is provided with the unit). Now, any studio or high end system can benefit from some of the features of our AD1’s unique sound quality like ultimate musical timing and stability of tone. “With regards to a clock, accuracy and stability are two very different things.” Grimm Audio’s extensive research into the correlation between jitter and sound quality brought to light that emotional response to music is vastly more sensitive to jitter than previously realized. Attention turned from “making jitter low” to achieving the most stable clock possible. Marketing tends to express a clocking circuit’s performance in a “the lower the better” ppm (parts per million) or picosecond (1 picosecond = 1 trillionth of a second) number. Hence the claim that Atomic clocks are “the best” for audio because of their accuracy. Atomic clocks are “accurate”.Some are only a second off in a century (about three billion seconds): an average accuracy of 0.3 parts per billion or 0.0003ppm. That’s the sort of thing they were designed for. Does that imply that they are only one three-billionth of a second off in one second? Not at all. When a clock runs one millisecond late during one second and one millisecond early during the next, it’s basically correct again. So long as these short term errors don’t accumulate over time, they do not disqualify the clock as a timepiece. But you will agree that it would not merit the name “stable”. On the other hand, a clock that is one second off every day could still manage to slice every second into tiny slivers that are just perfectly equal. Accuracy and stability are two very different things. “Owing to a radically redesigned discrete crystal oscillator, CC1’s clock stability betters that of even the best test equipment available.” Grimm Audio’s research turned up a surprising array of previously underestimated performance factors that affect a clocking circuit’s stability, like power supply noise, oscillator control circuit noise and low-level crosstalk. The end result is that owing to a radically redesigned discrete crystal oscillator, clock stability betters that of even the best test equipment available. To sync to an external reference the CC1 sports a PLL offering an astounding 90 dB of jitter suppression at 10 Hz, further improving at 60 dB/dec. The CC1 offers base rates of 44.1kHz and 48kHz and 1/2/4 multiples in separately selectable groups, in addition to an AES/EBU reclocker for cleaning the digital feed to your DA converter. Like all Grimm Audio products, the CC1 features striking styling and solid build quality. Features: ultra-low jitter clock source generate and slave to word clock s/pdif reclocking sample rates from 44.1kHz up to 192kHz two independent sample rate groups

In any audio device, the power supply is a significant contributor to sonic success or failure. In tube microphones this is even more so than anywhere else. The MP1 allows you to realise the full potential of your treasured vintage or contemporary tube mic. Hear your mike as never before.“The MP1 allows you to realise the full potential of your treasured vintage or contemporary tube mic”The 'MP1 | Grimm' re-writes the book on tube mic supplies. Drawing from the extensive expertise gained designing the supplies used in the AD1 and CC1 products, the MP1 uses discrete voltage regulators, a shunt regulator for the anode supply and a high precision series one for the filament supply. The anode supply offers noise as low as-100 dBV (in average 20 dB beter than existing supplies) and the 'shunt' design turns the regulator into an active decoupling device, eliminating electrolytics. Voltages are factory pre-set to match the customer's microphone specs.Stylish, compact and practical, the MP1 fits well on any recording stage.Features:ultra-low noise high voltage supplylarge isolation from mains disturbanceshunt anode voltage regulatorhigh precision filament supplytwo MP1's combine to a 1U 19" unitwith or without polar pattern controlpresets for every type of tube microphone* 

The Grimm Audio  LS1 is the most technologically advanced loudspeaker system ever!A good monitor combines a high degree of accuracy with untrammeled musicality. There aren't many of those around - common wisdom has it that you can have one or the other but never both. The LS1 is the first monitor to prove conventional wisdom wrong.By integrating top quality digital signal processing, converters and amplifiers in one of the speakers' legs, Grimm Audio was able to apply technical strategies no one had used before. As a consequence, the LS1 is not just a loudspeaker, but a complete audio system that only needs an analog or digital line source to perform.“This speaker is explicitly for those who want the most neutral and transparent sound reproduction, no corners were cut.”True accuracy is about getting all the bits in the right place: not losing anything, not adding anything either. The LS1 offers this accuracy, reproducing a truly musical recording accurately, with all beauty intact. At the same time, the LS1 will also reproduce any imperfection, giving you all the information you need to get it right. These qualities make the LS1 an ideal monitor for both mastering and mixing.Don't let the stylish industrial design and finish fool you: the shape of this loudspeaker is the outcome of thorough psychoacoustical and acoustical research. Its small sealed box (14 litres) is much wider than it is deep, is designed to provide an effective baffle down to around 250 Hz.That way, the LS1 achieves a reasonable constant directivity in 2π space above 250 Hz (with a natural and progressive “narrowing” of its high frequency off-axis response) minimizing many of the listening room’s detrimental effects (Psychoacoustics tells us that below about 300 Hz the ear will no longer clearly discern direct sound, first reflections or reverberant sound), while below 250 Hz the speaker gradually transitions to omnidirectional.“The wide baffle halves the volume into which the sound is radiated, thereby halving room problems as well. The cylindrical sides eliminate the classical "big box" colouration that is caused by edge diffractions.”The LS1 is suspended between two half cylinders that combat diffraction and function as an integral two-legged floor stand. An 8" magnesium woofer and a 1" dome tweeter divide the work between them. Smart use of DSP linearizes the frequency response and allows for a controlled bass response down to 35 Hz.Housed in one of the two legs are a 48/76-bit DSP, digital I/O, AD/DA converters, the same clock circuit as Grimm’s own CC1 master clock and the drive electronics, encompassing two 180W Class D power amplifiers of the groundbreaking Hypex NCore type.The concept of the LS1 draws maximum benefit from intelligent application of DSP technology. An IIR crossover imposes exact LR4 acoustic slopes crossing at 1550 Hz, and the phase is subsequently corrected using an idealised inverted all-pass filter, resulting in a maximally linear phase response without any pre-echo’s. This removes the “digital loudspeaker sound signature” typical of the more ubiquitous impulse inverted FIR designs.“The waveguide tweeter, the perfectly pistonic woofer (both by the world famous Seas company) and the very low crossover frequency insure that the sound is radiated in an unusually wide and even manner.Grimm LS1’s carefully controlled acoustics form the basis for the active DSP based filter which welds the driver responses together into the most even-handed frequency response and the fastest impulse response you'll ever hear.”The LS1 is also a very practical loudspeaker. Its digital input allows them to be connected without further ado to network players like Squeezebox or Sonos, or to a Mac or PC using the included USB converter. The pictures on the right hand show a few options.Despite their compact size, these floor standing speakers are clearly intended as main monitors in mastering studios and mixing rooms that have space to put free-standing speakers. The DSP controlled analog subwoofer output allows for easy integration with stereo subwoofers, for those that need high SPL performance below 40 Hz.By selecting Grimm’s own LS1s subwoofers, perfect integration with the main system is obtained, effectively turning the LS1 into a threeway system.More info can be found at the LS1 remote and the LS1s subwoofer page.For Measurement Charts (both in-house and third party – German Audio Magazine’s May 2013 issue) and photos of the LS1 please refer to the pictures section of this page.Features:Unidirectional down to 250 HzDSP controlled frequency curveWell-behaved off-axis responseDigital and analog audio inputsFiltered analog subwoofer outputFail safe due to excursion and thermal limiterMidi control of volume and settingsSuper low distortion NCore class D power ampsAudiophile quality Seas driversRemote control optionDifferent color scheme options Specifications:·         Frequency response: 55Hz-30kHz +/-0.5dB. 45Hz-40kHz -3dB(Low corner is user-settable between 35 Hz and 100 Hz, Q=0.7 or 0.5)With the addition of the LS1s Subwoofers, the LS1 can perform almost down to the infrasonic range·         Deviation from minimum phase +/-2°·         Amplifier power: 2x180W·         Max SPL: 109dB/1m·         SNR: 114dB (unweighted)·         Crossover function: 1.55 kHz LR4, sum corrected to minimum phase.·         Latency: 2ms·         Internal volume: 14 litres·         Height: 1150mm, 1450mm - available on demand.·         Width, depth: 520mm X 160mmFurther Resources:·         Download the LS1 PC remote software

The Completion…A pair of LS1s stereo subwoofers integrate seamlessly with the LS1. Its phase corrected crossover at 70 Hz is already built in the LS1, so just adding the subs turns the system into a unique phase coherent three-way system. Although the LS1 on its own can play down to 40 Hz with quite impressive power, the bottom octave down to 20 Hz is hard to produce with a two-way loudspeaker system. Especially classical music does benefit from a balanced reproduction of these ultra low frequencies. Also, both professionals who need to check their mix at raised SPL and regular Hi-Fi enthusiasts who enjoy their music at realistic levels, will value the lower LS1 system distortion offered by the LS1s option.“Adding the LS1s subs turns the LS1 system into a unique phase coherent three-way system.”At low frequencies, wavelengths are so large that the speaker's orientation does not matter. This fact offered us the opportunity to elegantly fit the LS1s between the legs of an LS1, facing upwards. To match the immaculate quality of the LS1, we selected a top notch Peerless woofer and a 400W class D amplifier of Hypex fame.More info can be found at the LS1 page.Features:Linear response down to 20 HzTurns the LS1 into a powerful 3-way systemDSP controlled frequency curvePhase corrected crossover at 70 HzPeerless woofer and 400W class D amplifierMains outlet for LS1 minimizes cable clutter

The Grimm Audio  LS1 is the most technologically advanced loudspeaker system ever!A good monitor combines a high degree of accuracy with untrammeled musicality. There aren't many of those around - common wisdom has it that you can have one or the other but never both. The LS1 is the first monitor to prove conventional wisdom wrong.By integrating top quality digital signal processing, converters and amplifiers in one of the speakers' legs, Grimm Audio was able to apply technical strategies no one had used before. As a consequence, the LS1 is not just a loudspeaker, but a complete audio system that only needs an analog or digital line source to perform.“This speaker is explicitly for those who want the most neutral and transparent sound reproduction, no corners were cut.”True accuracy is about getting all the bits in the right place: not losing anything, not adding anything either. The LS1 offers this accuracy, reproducing a truly musical recording accurately, with all beauty intact. At the same time, the LS1 will also reproduce any imperfection, giving you all the information you need to get it right. These qualities make the LS1 an ideal monitor for both mastering and mixing.Don't let the stylish industrial design and finish fool you: the shape of this loudspeaker is the outcome of thorough psychoacoustical and acoustical research. Its small sealed box (14 litres) is much wider than it is deep, is designed to provide an effective baffle down to around 250 Hz.That way, the LS1 achieves a reasonable constant directivity in 2π space above 250 Hz (with a natural and progressive “narrowing” of its high frequency off-axis response) minimizing many of the listening room’s detrimental effects (Psychoacoustics tells us that below about 300 Hz the ear will no longer clearly discern direct sound, first reflections or reverberant sound), while below 250 Hz the speaker gradually transitions to omnidirectional.“The wide baffle halves the volume into which the sound is radiated, thereby halving room problems as well. The cylindrical sides eliminate the classical "big box" colouration that is caused by edge diffractions.”The LS1 is suspended between two half cylinders that combat diffraction and function as an integral two-legged floor stand. An 8" magnesium woofer and a 1" dome tweeter divide the work between them. Smart use of DSP linearizes the frequency response and allows for a controlled bass response down to 35 Hz.Housed in one of the two legs are a 48/76-bit DSP, digital I/O, AD/DA converters, the same clock circuit as Grimm’s own CC1 master clock and the drive electronics, encompassing two 180W Class D power amplifiers of the groundbreaking Hypex NCore type.The concept of the LS1 draws maximum benefit from intelligent application of DSP technology. An IIR crossover imposes exact LR4 acoustic slopes crossing at 1550 Hz, and the phase is subsequently corrected using an idealised inverted all-pass filter, resulting in a maximally linear phase response without any pre-echo’s. This removes the “digital loudspeaker sound signature” typical of the more ubiquitous impulse inverted FIR designs.“The waveguide tweeter, the perfectly pistonic woofer (both by the world famous Seas company) and the very low crossover frequency insure that the sound is radiated in an unusually wide and even manner.Grimm LS1’s carefully controlled acoustics form the basis for the active DSP based filter which welds the driver responses together into the most even-handed frequency response and the fastest impulse response you'll ever hear.”The LS1 is also a very practical loudspeaker. Its digital input allows them to be connected without further ado to network players like Squeezebox or Sonos, or to a Mac or PC using the included USB converter. The pictures on the right hand show a few options.Despite their compact size, these floor standing speakers are clearly intended as main monitors in mastering studios and mixing rooms that have space to put free-standing speakers. The DSP controlled analog subwoofer output allows for easy integration with stereo subwoofers, for those that need high SPL performance below 40 Hz.By selecting Grimm’s own LS1s subwoofers, perfect integration with the main system is obtained, effectively turning the LS1 into a threeway system.More info can be found at the LS1 remote and the LS1s subwoofer page.For Measurement Charts (both in-house and third party – German Audio Magazine’s May 2013 issue) and photos of the LS1 please refer to the pictures section of this page.Features:Unidirectional down to 250 HzDSP controlled frequency curveWell-behaved off-axis responseDigital and analog audio inputsFiltered analog subwoofer outputFail safe due to excursion and thermal limiterMidi control of volume and settingsSuper low distortion NCore class D power ampsAudiophile quality Seas driversRemote control optionDifferent color scheme options Specifications:·         Frequency response: 55Hz-30kHz +/-0.5dB. 45Hz-40kHz -3dB(Low corner is user-settable between 35 Hz and 100 Hz, Q=0.7 or 0.5)With the addition of the LS1s Subwoofers, the LS1 can perform almost down to the infrasonic range·         Deviation from minimum phase +/-2°·         Amplifier power: 2x180W·         Max SPL: 109dB/1m·         SNR: 114dB (unweighted)·         Crossover function: 1.55 kHz LR4, sum corrected to minimum phase.·         Latency: 2ms·         Internal volume: 14 litres·         Height: 1150mm, 1450mm - available on demand.·         Width, depth: 520mm X 160mmFurther Resources:·         Download the LS1 PC remote software