Please make a sonos multi zone amp!

It can be done whether you're using sonosnet, direct Wi-Fi access or completely wired. Perfectly synced audio across any and all zones is Sonos' raison d'être, it was their usp for years and arguably still is! Up to 32 zones, all playing exactly in sync, nobody else can do that.

Any Sonos unit can be Grouped with any and all other Sonos units (up to 32 total), with all units playing the same source. This can be done in WiFi mode or Sonosnet mode, though Sonosnet mode is better for larger installations. And yes, you can connect up to 4 speakers (must be 8 Ohm speakers) per Connect:Amp. Each pair will play the same source at the same volume. If you wish separate volume controls, you have to wire in manual wall controls.

Any Sonos unit can be Grouped with any and all other Sonos units (up to 32 total), with all units playing the same source. This can be done in WiFi mode or Sonosnet mode, though Sonosnet mode is better for larger installations. And yes, you can connect up to 4 speakers (must be 8 Ohm speakers) per Connect:Amp. Each pair will play the same source at the same volume. If you wish separate volume controls, you have to wire in manual wall controls.
Whoa! That is perfect! Do you know if there are limitations on what Sonos can use as a source? Say I'm playing a video (whatever app, doesn't matter) on my mobile device, can I send it to the Sonos to play through my speakers? I'd like to know what the limits are (make sure that it doesn't only support Spotify or iTunes as a source) before I put down over $500 bones. 😃

You can play sources within the Sonos app. Not programs outside Sonos app. Only way to play sources outside app right now is via AirPlay, Google chromecast, or Bluetooth. Each of those require a single attached to a Singke Sonos unit (like play:5) to input as source into Sonos.

You can play sources within the Sonos app. Not programs outside Sonos app. Only way to play sources outside app right now is via AirPlay, Google chromecast, or Bluetooth. Each of those require a single attached to a Singke Sonos unit (like play:5) to input as source into Sonos.

Chromecast or Bluetooth would work, but I need another device for that? That's unfortunate.

If your buying a new Play:5 with input it pretty simple and under $40 to add the dongle for either of these options. We actually are hoping sonos adds chromecast natively. But it's a new standard so too early to tell yet.

If your buying a new Play:5 with input it pretty simple and under $40 to add the dongle for either of these options. We actually are hoping sonos adds chromecast natively. But it's a new standard so too early to tell yet.
So I'll need to buy a Play:5 and a Connect:amp to use Chromecast?

Actually either or will work. Both have an input so you can add a chromecast audio $40 dongle to either and you will have full chromecast ability.

Once you attach the chromecast dongle to a single Sonos unit all Sonos units will have access to it.

In case it isn't clear, Sonos Play5, Connect, and Connect:AMP all have inputs that you could attach a bluetooth dongle, chrome case, or airport express to.