The dual digital stereo channel features two 24-bit 96 kHz digital inputs with an INP 1/INP 2 toggle button to select between them. The button illuminates red to indicate when input 2 is selected. Button operation is inhibited when the channel is "live".nnEach input can be configured to be balanced AES/EBU on standard XLR, or S/PDIF on phono sockets, selected by internal jumpers. An additional jumper option can be used to decode emphasis when indicated by certain status bits in the incoming data stream. Digital signals are converted to analogue and from this point, the channel functions are the same as for the S2-CS dual stereo line channel, with the addition that when the ON button flashes green, it means there is no valid digital input.