I’m looking for a Volumio setup that offers additional analog inputs to connect other sources. Ideally those would be just analog pass-throughs, meaning it could just send the aux ins to the outputs (ideally switching through the volumio interface, or through a standard TV remote), without the signal passing through an ADC-DAC.
Is something like that possible, or am I asking for too much?
Reason for all that is that I plan to connect the streamer directly to some active studio monitors and get rid of the AV-receiver that takes care of the switching as of now.
I think your going for a hard challenge with disappointing result. There are some cheap RCA input switches, which most likely will introduce noise with different sources attached or have some big crosstalk.
You can take a look at this one, and have the relays activated by GPIO (or just use the remote):