The ULT Field 3 can be mated with a twin for true stereo sound or you can engage Sony’s Party Connect mode for up to 100 ...

AlphaTheta has developed a new wireless protocol called SonicLink, which has a greater range than Bluetooth and latency figures 20 times faster at just nine milliseconds.

So is Sonos still worth considering? We think so. Bar a couple of duds like its Ace wireless headphones, its devices are mostly excellent. But there are plenty of other great multi-room speakers ...