Universal Audio 2192 Master Audio Interface - Manual (Page 51)

Specifications
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Analog:
Inputs
Connectors 2x balanced XLR female connectors
Type DC coupled, dual-differential
Common-mode rejection ratio (CMRR) >90dB
Impedance ~1.5k ohms
Maximum input level +31dBu
Outputs
Connectors 2x balanced XLR male connectors
Type DC coupled, dual-differential
Impedance ~95ohms
Maximum output level +23dBu
Frequency Response (analog input to ADC to DAC +/- 0.1dB, 10Hz to 40kHz, -1dB at 74kHz
to analog output, referenced to 1kHz, Fs = 192kHz) (  see page 39)
Analog Level Trim
ADC input (Lo-Z source) Max input for 0dBFS: +30dBu
Min input for 0dBFS: +5.5dBu (3dBV)
DAC output (Hi-Z load) Max output at 0dBFS: +23dBu
Min output at 0dBFS: +4dBu (+1.8dBV)
Factory Trim (accessed via 15-turn, rear-panel mounted potentiometer)
Headroom +18dB
Reference level +4dBu = -18dBFS
Max input/output at 0dBFS +22dBu