System type : 20 inputs mixer with double digital effects & USB Power Supply : 230VAC 50/60Hz or 117VAC 50/60Hz Phantom power : + 48 V all mono input Output Power (THD<1% 1kHz) Stereo 4+4ohm : 750 W + 750 W RMS Input Connectors : Mic Input Balanced XLR-F - Combo Line Input Balanced TRS Jack USB Inputs : 18 MIC - 16 Line - 2 stereo line - USB Input Sensitivity : Mic Input from 0 to -60 dB Line Input from +20 to -40 dB Input Impedance : Mic Input 2 Kohm Line Input 10 Kohm Output Connectors : Balanced TRS Jack and / or XLR-M - USB Outputs : C\ROOM - MAIN MIX - MONO OUT - GROUP 1-4 - AUX 1-4 - PHONES - USB Amplifier Output : 2 x SPEAKON Output Levels : MAIN MIX nom. out level +4 dBu - all other outputs 0 dBu - Maximum level all outputs +22 dBu Headphones output impedance : min. impedance 32 ohm - max. out level (2x) 193 mW Distortion (THD+N) : at +4dB, 1kHz < 0,008 % Mono Input channel equalization : Lo Cut 75 Hz, 18 dB/oct. HIGH (shelving) ±15 dB @ 12KHz MID (peaking) ±15 dB from 100 Hz to 8 kHz LOW (shelving) ±15 dB @ 80Hz Stereo Input Channel Equalization : HIGH (shelving) ±15 dB @ 12KHz HI-MID (peaking) ±15 dB @ 3 KHz LO-MID (peaking) ±15 dB @ 500 Hz LOW (shelving) ±15 dB @ 80Hz Incorporated effects : Double effects unit with: HALL, ROOM, VOCAL and PLATE reverbs, MONO, STEREO and TAP DELAY, CHORUS and FLANGER, REV + DELAY, REV + CHORUS and REV + FLANGER 16 step PRESET selector 16 step VARIATION selector PEAK LED MUTE and TAP DELAY switch with LED indicator and footswitch Damping Factor : >500 @ 4 ohm Maximum Power Consumption : 1600 VA Frequency response : 20 Hz to 30 kHz: +0 dB/-1 dB Noise : unweighted < -93 dBu Protections : DC voltage, short circuit, thermal, soft start Cooling : variabile speed DC fan Weight : 12.1 kg(26.680lb ) Dimensions (W x H x D) : 71 x 9 x 43.5 cm Notes : Reinforced carrying bag included 9-band stereo assignable graphic equalizer