Operating Levels
Input
Mono channel (XLR) Input: +6 to -63dBu for nominal (+17dBu in max)
Mono channel Line Input (Jack socket): +10 to -26dBu (+30dBu maximum)
Insert point (TRS Jack socket): 0dBu nominal +21dBu maximum
Stereo Input (Jack sockets): 0dBu nominal (control = Off to +10dB)
Stereo input (phono sockets): 0dBu nominal (control = Off to +10dB)
Output
L, R & Mono Outputs (L&R XLR, Mono Jack): 0dBu nominal, +21dBu maximum
Aux Outputs (Jack sockets): 0dBu nominal. +21dBu maximum
Alt Outputs (phono sockets): 0dBu nominal. +21dBu maximum
Rec Outputs (phono sockets): 0dBu nominal. +21dBu maximum

Frequency Response
Mic in to Mix L/R Out, 30dB gain: +0.5/-1dB 20Hz to 20kHz
Line in to Mix L/R out 0dB gain: +0.5/-1dB 10Hz to 30kHz
Stereo in to Mix L/R out: +0.5/-1dB 10Hz to 30kHz

THD+n
Mic in to Mix L/R Out, 0dB gain: 1kHz +10dBu out 0.004%
Mic in to Mix L/R Out, 30dB gain: 1kHz 0.014%
Line in to Mix L/R out 0dB gain: 0dBu 1kHz 0.005%
Stereo in to Mix L/R out 0dB gain: +10dBu 1kHz 0.003%

Headroom
Analogue Headroom from nominal (0Vu): 21dB
USB in & out headroom from nominal (0Vu): 14dB

USB Audio CODEC (Coder/Decoder)
USB Audio In/Out: USB 1.1 compliant 16bit
Sample Rate: 32, 44.1, or 48kHz

Noise
Mic Pre EIN @ max gain 150R input Z 22-22kHz: -127dBu
Mix L/R out, L/R faders = 0, 22-22kHz: -88dBu

Physical
Dimensions: 15.2"W x 18.3"D x 3.86"H (385 x 465 x 98 mm )
Weight: 14.3 lbs (6.5kg)