re: Inexpensive 2 zone amplifier with wifi

I found a 5.1 receiver at Goodwill with separate RCA inputs for each channel pair. Paid $40ish. This can give you 2 separate zones. A 7.2 reciever can give you 3 zones.

I then got 2 echo dots for each zone, one for the room, and one for the reciever. Paired them so that when I talk to Alexa in the room, the output is through the echo dot located at the reciever.

I use this setup for 8 zones using 4 receivers. If you can wait on the echo dots, they often go on sale for $20.