I do this with WiiM. For me, the biggest thing is that I have speakers that are >20 years old that still work perfectly. Why replace what already works well?

I looked at the Sonos ecosystem for this, but their non-speaker devices are absurdly priced. The network audio streamer is 449 and the amp is 699. WiiM amps are either 299 or 379 and their network streamer ranges from 149 to 329. I have a few of the network streamers which were 149. They connect into my receiver, into an old amp I have, etc. and work perfectly.