Went to a demo session of the Tryros last night at my local music store and to my amazement the demonstrator announced that the keyboard was an updated version with new features one of which was a new way to attach the speakers.
I was taken aback as no one on the forums that I visit have mentioned that there has been the release of an updated version of the board.
I was completely blown away with the sound which they had coming out of large Yamaha speakers.

Cousin Ken