Had these for 10 days now, and I am very impressed by them, not least for their musicality - something I did not expect. However, the subwoofer died last night, and I was understandably furious. A check on the 'subwoofer' forum showed that a blown internal fuse was the most likely explanation - this has plagued MS309s. Had a look and - yes, a blown 1.6A fuse. MS know that it needs a 2.5A fuse, so why are brand new machines being supplied underspecced. As a matter of urgency, MS should send a new fuse kit to all Genie owners, with an apology. I think part of the explanation lies in using 'auto', which switches the thing on and off repeatedly. I'm just going to leave it on now.