Hello,

The Distributor only needs power to work. That power can be deliverd from connected speakerlink speaker or via USB. In your case you would need to feed three USB inputs with a powersource. Could be a simple 3 port USB phone charger.

The distributor must be programmed to all sources analoque so it will never do anything other then A/D conversion. Because you can't feed a mastercomms signal into the unit it will not switch sources. You need to program each of the three sections cause they are separate units.

I use it with speakerlink speakers only so I need comms as well. Got that sorted out but for your situation you can daisychain the comms together or use a 511 slave patch box for comms.

DSP8000SE - 218 - Roon