Recently setup a couple RPi4 Volumio devices with hifiberry amp 2 hats and they sound great! I still have a couple more rpi4s laying around though and wanted to know if there was a way to connect them together via hardware pins to create a more robust amplifier setup that would provide multiple channels as one source? One of my setups has a left/right/center speakers but I can only use the center channel with the second device synced to the first split between left/right which isn’t great.
Guessing it’s probably just time too buy an actual amp but I love doing DIY route when possible.