So if digi in is channels 1/2 and SBD 3/4 can you route the 3/4 signal to the digi out??
Hmm, can't remember when recording. To route 3/4 only to the digi-out on playback, you set
output select in the system setup menu to
mix, or
monitor or whatever the mixed channel output mode is called, then press the
display button to select the channel playback gain screen, turn ch1&2 down to 0 and 3&4 up to 100.
You might try pushing
monitor select (the headphone gain knob) until it selects ch's 3/4 only. Try it with output select set alternate ways- switched between
individual channel outputs and
mix (or monitor or whatever it is).