KW1 KEF wireless adapter

I have Kef LS50 speakers for my Atom. Now I like to add a subwoofer. For KEF subwoofers the wireless adapter KW1 is available. Does anybody have experience with this adapter on the atom (does it work?) and is the sound quality worse than with a wire ?

I have not used it, there is no reason why it potentially can’t sound quite good… I do wonder how they manage the added latency however.