Great speaker, except when listening with bluetooth.

There is a subtle, high-pitched whine (briefly noted in CNET review) when using bluetooth. It's noticeable enough that you can't stop hearing it and makes listening to music impossible. It sounds surprisingly good, however, when using the line-in (but you could buy something similar, and a lot cheaper, if you don't care about bluetooth). I have a new phone (Blackberry Pearl 8130) and pairing was no problem. I called Yamaha and they were not aware of the problem, although I did have the rep read the CNET review. He said he would talk to the tech guys and get back to me. That was two weeks ago.
I am returning the Yamaha and have just recieved a Parrot "Party"Parrot PARTY Bluetooth® Stereo 2.0 Portable Soundbox. Interestingly, the Parrot sounds very good using bluetooth, but not as good using line-in. I'm keeping the Parrot.