This channel is also common to all mixing consoles and provides a digital and analogue output of the AUD mix bus.nnnThe digital output is available as a balanced AES/EBU signal via a standard XLR or as S/PDIF on phono sockets. The balanced AUD analogue outputs are available on a 15-pin D-sub connector which also includes the two sets of latching relay contacts for studio mutes.nnThe push buttons at the top of the channel select the monitoring source to the meter bridge. The meter bridge meters connected to the "Monitor Meter" position will display the signal selected from the electronically latching PGM, AUD or CR MON buttons. The CR MON signal source corresponds to what is heard in the presenter's headphones on the control room monitoring channel, before talkback and level control. This signal can be PGM, AUD, EXT 1, EXT 2 or PFL, depending on the presenter's selection.nnThe digital output status bits (consumer or professional), output sample size (16, 20 or 24 bits) and sampling frequency (automatically or via internal jumpers from 32 kHz to 96 kHz) can be set. The digital output can be synchronised from an external input or an internal master clock. There are 4 different synchronisation modes: Master, Auto, Auto Lock and Slave.nnThe illuminated LOCK LED indicates that the digital output is locked to the internal master clock, incoming word clock or AES/EBU or S/PDIF compatible sync signal. The channel automatically searches for a sync signal on the Word Clock or selected digital input, and automatically locks to a valid sync clock. If synchronisation is lost, the indicator will flash. Synchronisation can be disabled by jumper.nnnAUD S2-ODAF digital output channel with main fadernnThe S2-ODAF channel also features a 100mm VCA output fader for production that provides unity gain when fully open.