I bought one of these a couple of months ago, and to put it as bluntly as possible, the sound sucks. There’s a constant whiny staticy edge to everything it plays. Maybe I just got a lemon — the Amazon reviewers have other complaints, but no one seems to have a problem with the sound quality. I could return it, of course, if I still had the receipt, and if you think I still have the receipt, well, you have obviously never met me.
… no it’s not near any obvious source of interference, and yes, I’ve experimented with the settings at great length …