$150 off, pretty good price for a wireless speakers I reckon.
Pair 2 speakers for stereo or to a compatible soundbar for surround.
For me it's better than Sonos as you get alot more connection options:Google Cast, Bluetooth, HDMI, USB, LAN and audio line-in, I'm pretty sure with Sonos it's just wireless audio?
Not sure I'd buy 2x of these for $600 for a stereo setup or to pair with a soundbar, but for $298 i think it's pretty reasonable for a SONY.
Nice little speaker - a bit too bassy in my opinion but great connectivity. I prefer the ZR7 - Sony sold them for $200 in their last sale. But this one's great for a small space.