I love them. After about 9 months, I got a crackling in the left speaker which started after about 10 minutes and progressed until the speaker shut down. Once my dealer could get them to pay attention, KEF fixed the problem without a question (although I had to pay shipment one way). Turned out, this was a known problem.
now, if only I could get the (Windows) firmware updater to work (to 3.0.0). I don’t like to upgrade firmware for no reason, but they’ve upgraded the KEF app on iOS so that it fails if the firmware isn’t v 3. So, if I want to adjust sound, I’m stuck upgrading the firmware.
Fabulous hardware. Lousy software.