Main Mix Noise (20Hz–20kHz bandwidth, 1/ 4" Main Out, channel Trims @ unity gain, channel EQs flat, all channels assigned to Main Mix, odd channels panned left, even channels panned right) Main Mix fader unity, channel faders down: –86.5dBu (90dB Signal to Noise Ratio, ref +4dBu) Main Mix fader @ unity, channel faders @ unity: –84.0dBu Total Harmonic Distortion (THD) 1kHz @ +14dBu: 20Hz–20kHz Mic in to Main out: below 0.0007% Attenuation (Crosstalk) (1kHz relative to 0dBu, 20Hz–20kHz bandwidth, Line in, 1 /4" Main Out, Trim @ unity) Channel Mute switch engaged: –84dBu Channel Gain knob down: –84dBu Frequency Response Mic input to any output 20Hz to 60kHz: +0dB/–1dB 20Hz to 100kHz: +0dB/–3dB Equivalent Input Noise (EIN) Mic in to Insert Send out, max gain 150 Ω termination: –129.5dBm unweighted Common Mode Rejection (CMR) Mic in to Insert Send out, max gain 1kHz: better than 90dB Maximum Levels Mic in: +22dBu All other inputs: +22dBu Main Mix 1/ 4" TRS and XLR outputs: +28dBu All other outputs: +22dBu Impedances Mic in: 1.3 kΩ Channel Insert return: 2.5 kΩ All other inputs: 10 kΩ or greater Tape out: 1.1 kΩ All other outputs: 120 Ω 3 band EQ (Channels 1 - 8) High Shelving: ±15db @ 12kHz Mid Peaking: ±15dB, sweep 100Hz–8kHz Low Shelving: ±15db @ 80Hz Low Cut Filter: 18dB/octave, –3dB @ 75Hz 4-band EQ (Channels 9 - 16) High Shelving: ±15db @ 12kHz Hi Mid Shelving: ±15dB, 3kHz Lo Mid Shelving: ±15dB, 800Hz Low Shelving: ±15db @ 80Hz Low Cut Filter (Ch9-12): 18dB/octave, –3dB @ 75Hz Power Consumption 120VA.C., 50/60Hz, 40 watts Fuse Ratings 120V: 1A Slo Blo, 5 x 20mm 220–240V: 0.5A Slo Blo, 5 x 20mm Weight 18.2 lbs. (8.3kg) Rack mounting Optional rack ears are available which will allow the 1642-VLZ PRO to be mounted in a standard 19" rack. Allow ten rack spaces for the unit, and allow two empty rack spaces on top for room to plug things in.