audient id14 mk1 compatibility

someone is using the id14 mk1 with the mpc one? well i try it several times and i have the problem that i only listen from one speaker - so what im doing wrong? i double check outputs and inputs .

You‘ll have to open the ID14 control panel and setup signal routing on a PC/Mac.
Then (while keeping the ID14 powered), unplug the USB connector from PC/Mac and plug it into the MPC.

Your ID14 may have an erroneous initial setup, possibly a firmware update can help.
(just to get back to the regular 2 channel output).
But whatever you want to change from the initial setup, will require the procedure above if the unit is powered down, same with ID22.
Only the ID44 stores the setup onboard. It will need a PC/Mac though to be configured, but at least the configuration will stay. On ID14 and ID22 it‘s lost with every power cycle.