Instruct: Classify an Amazon review as either positive or negative.
Query: good sound, BUT...

... when powered on there is a very slight hissing sound, like a static sound, even when no audio cable is attached. When you hear music it isn't a problem, but when it is very quiet and no music is playing it is noticeable. I talked to BOSE, they say it is normal, all Companion 2 and 3 do that. Well, my cheap $20 speaker doesn't do that. Nor does my Logitech do that. Not acceptable, I sent it back.Besides that I like the BOSE sound and design.