Empirical Labs EL9 Mike-e, digital controlled Mic Pre-Amp with compressor, Instrument Input, Phase Switch, Freq. Response is 3 thomann Hz to 200 kHz on (No CompSat). CompSat is 3Hz - 150Khz. Optional Transformer output is 6Hz–80kHz, Signal to Noise - 130 dB signal to Noise.at 40dB gain. Maximum output is +28dBu, Distortion Ranges between .0006% and 15% depending on mode and settings, Transformer thomann coupled Input, Active and Transformer Outputs available, Input Impedance is 600 Ohms. Output impedance is less than 38 ohms., Attack/Decay Ranges - .9 - 100mS attack. .15 - 1 Sec., Power Consumption 15 Watts Max.