The CEQ231 is a 19" 2U rack mounted dual 31-band graphic equaliser, which allows the adjustment of labelled frequencies via the individual cut/boost faders. Up to 12dB of cut or boost for frequencies ranging from 20Hz to 20kHz for ultimate EQ control.Power supply[tab]115/230Vac, 50/60Hz (IEC)[br]Frequency response[tab]20Hz-20kHz[br]Input impedance : balanced[tab]40k ohms[br]Input impedance : unbalanced[tab]20k ohms[br]Output impedance : bal/unbal[tab]330 ohms[br]Channel separation[tab]>50dB[br]Signal to noise ratio[tab]>102dB[br]THD[tab]0.005%[br]Dimensions[tab]482 x 88 x 139mm[br]Weight[tab]3.3kg