Streamers:
Audiocast - https://amzn.to/2EyyQhu
Muzo - https://amzn.to/2Yq3EbG
Nexum Tunebox - https://amzn.to/32iaC3r
Bluetooth B06 - https://amzn.to/3lc8gf5

Amp:
Dayton 12 channel - https://amzn.to/3j1psSC
Ebay seatch for "12 channel amplifier", preferably digital (class d).
Elan d1200 is what I use.

Amp/Controller combo:
https://www.monoprice.com/product?p_i...

Controllers:
Old HTD lync, Russound, Phast, Savant
If technically skilled, can find older composite matrix switches with serial interfaces, and code up your own app to communicate over that.

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