Empirical Labs EL8-SX Stereo Distressor British Mod Freq. response is 2 Hz to 160 kHz in clean audio mode (+0, -3 dB). Response is shaped in distortion modes (Dist 2, Dist 3) Dynamic range 110 dB from max. output to min. output in 1:1 mode. Greater than 100 dB signal to noise in distort 3 mode Distortion ranges between .02% and 20% depending on distortion mode and release times set on front panel DC coupled output - High quality input caps Input impedance is 20K Ohms, Output impedance is &lt; 75 ohms