Specifications

Analog Inputs

Send Analog Inputs	1 for Hx1, 2 for Hx2 (one per hybrid)
Connector	XLR Female, Pin 2 High (Active balanced, RF suppressed)
Input Range	Selectable between MIC and LINE level
Line Input Level	Adjustable from -10 to +8 dBu
Impedance	Bridging >50K Ohms
Analog Clip Point	+21 dBu
A/D Converter Resolution	24 bits

Analog Outputs

Receive Analog Outputs	1 for Hx1, 2 for Hx2 (one per hybrid)
Connector	XLR Male, Pin 2 High (Active balanced, RF suppressed)
Output Level	Nominal +4 dBu, fixed
Impedance	< 50 Ohms
Headroom Before Clipping	20 dB headroom from +4 dBu nominal level
D/A Converter Resolution	24 bits

Audio Performance

Frequency Response	200 - 3,400 Hz, +/- 1 dB
THD+N/Input	<0.5% THD+N using 1 kHz sine wave
Dynamic Range	Analog In to Analog Out, studio loop mode, 10 Hz - 20 kHz, A-weighted: > 92 dB
Signal to Noise	Analog Output, referenced to a -12 dBm phone line producing a +4 dBu output, 10 Hz - 20 kHz, A-weighted: >72dB
Trans-hybrid Loss	Analog phone line with ducking, gate, AGC and EQ set to "Off", relative to +4 dBu input level: >55 dB

AES I/O (Optional Plug-in Module)

Sample Rate Conversion	SRCs on all inputs and outputs. Inputs can accept 32, 44.1, and 48 kHz rates. Clock for outputs may be sourced from the AES inputs or internally generated at 48 kHz.
Input Level	Nominal at -20 dBFS
Output Level	Nominal at -20 dBFS