The ClearOne XAP 800 Audio Conferencing Mixer is a professional grade audio mixer. With 12 balanced mic/line inputs and 12 balanced outputs. I purchased this used with the intention of using it as a whole home audio distribution system. There are various descriptions of projects for this on the internet including some GitHub projects to integrate with home assistant. (this would have been preferable to the Sonos mess I find myself in), unfortunately it was another project I didn't get time to complete. It's been stored away for a while, as you can hear in the video it needs a new fan, but that's an easy cheap fix. Please study the pictures for what's included. The unit and an iec power cable only. Could be a great little project. No returns
eBay