All products in the sale: https://search.www.davidjones.com/search?w=audio%20pro%20add...
Read about these speakers recently and found this sale at DJ's while shopping around.
These review very highly and are supposed have much better sound quality and build quality than Sonos speakers, with very similar functionality.
Plays from internet streaming services, from a computer or NAS in your network, or music on your phone. WiFi, Bluetooth, Spotify Connect etc.
I picked up the Addon C5 which has more power than the C3, but requires a power source. The C3 can be completely wireless with a rechargeable battery with over 15 hours playback. The sub can connect to any of the speakers and all them connect to each other to create a multi-room setup.
Hope this helps anyone else looking for a wireless speaker system with good looks (subjective) and great sound.
These all retail for $400+ elsewhere.