A rare and amazing professional machine. It works flawlessly from full service! SPECS: Input and Output Levels: XLR INPUT (electronically balanced) Mic Gain range: +22~+54dB with +20db/-12dB gain trim Maximum input level : -14dBu Input impedance: 2k ohms INSERT SEND (unbalanced, Ch1 only) Nominal level: 0dBu Maximum output level: +20dBu into 2k ohms Output impedance: 75 ohms INSERT RETURN (unbalanced, Ch1 only) Maximum input level: +20dBu Input impedance: >50k ohms PHONO/LINE INPUT (unbalanced) Nominal level: 0dbu Trim: +12/-20db Max input level: +20dbu Input impedance: 45k ohms Rear Panel Connector connections: XLR INPUT & OUTPUT (3 pin female XLR) INSERT SEND and RETURN (1/4" TSR Jack) MIC 1 Only PHONO and 1/4” JACKS Master/Booth Output: High Pass Filter: 18dB/Octave @ 63Hz Output Impedance: 75 ohms Recommended Load: 600 ohms or greater Frequency Response: +/- 1dB, 20Hz-20kHz Distortion: < 0.05% THD, 20Hz-20kHz @ +16dbu Maximum Output: +20dB into 600 ohms Headphone Output: Output Impedance: ohms Recommended Load: 150 ohms or greater Frequency Response: +0, -1dB, 20Hz-20kHz into 200 ohm load Distortion: < 0.05% THD, 20Hz-20kHz @ +16dBu Maximum Output: 190mW into 150 ohms Mono Output: Output Impedance: 75 ohms Recommended Load: 2k ohms or greater Frequency Response: +/- 1dB, 20Hz-20kHz Distortion: < 0.05% THD, 20Hz-20kHz @ +16dBu Maximum Output: +20dBu into 2k ohms Effects Loop Output: Output Impedance: 75k ohms Recommended Load: 5k ohms or greater Frequency Response: +/- 1dB, 20Hz-20kHz Distortion: < 0.05% THD, 20Hz-20kHz @ +16dBu Maximum Output: +20dB into 2k ohms Noise: All channels routed at unity, mix at unity: < -85dB Crosstalk (@1kHz): < -85dB Channel Mute: Fader Cut-off (rel. 0 Mark): < -95dB FX Sends offness: < -90dB Input and Output Impedance: Mic Input: 2k ohms Line Input:45k ohms Aux Input (Unbalanced RCA Phono): 30k ohms Master/booth Output: 75 ohms Aux Output: 75 ohms Headphones Output: 40 ohms Maximum Output Levels: Insert Send Output: +20dBu into 2k ohms Mix Output: +20dBu into 600 ohms Aux Output: +20dBu into 2k ohms Booth Output: +20dBu into 600 ohms Headphones Output: +20dBu into 300 ohms Headphones: 190mW into 150 ohms Dimensions/ weight: Without rack ears: 87.6(H) x 440(W) x 400(D) (mm) With rack ears: 87.6(H) x 483(W) x 400(D) (mm) Weight: 8.7kgs/ 19.1 lbs 1603 Without rack ears: 87.6(H) x 338(W) x 400(D) (mm) With rack ears: 87.6(H) x 381(W) x 400(D) (mm) Weight: 7.5kgs/ 16.5 lbs