I have a Amp+ 1.0 attached to a pi3 & a 12" Celestion speaker. I'd like to connect this to a synthesizer I just got. I have a ugreen usb sound card to plug the synth into, but don't know how to get the signal to the amp. Is there an easy way set this up. The Volumio build appears to have the feature if you pay monthly subscription ($). Is there an audio build os that makes this easy & has low latency?
Local Input for Amp+ 1.0 output?