Hi i am new to this forum, and would like to say hi to all, in regards to the mz-r900 i have had one of these units. The sound quality was impressive as it could handle more bass than most portable units. Mine was the metallic teal color. Sadly i sold this baby because i thought it was obsolete, i thought wrong. Never again have i owned any portable device with such bass response. A very nice piece if you can find one on ebay!