McLaren Audio MLQ750 7-Band Parametric Equalizer 7 Equalization Bands wirh Extended Freq Response Equalizer Frequencies 50Hz, 125Hz, 315Hz, 750Hz, 2.2KHZ, 6KHz, 16KHZ T.H.D 0.005%; Input Sensitivity 50 mV 3V St Separation 82 dB / 1KHz .