I'm sorry to report that I still feel this way after many attempts to test out my theory on playing the Tyros in Stereo (2 speakers) vs Mono (1 speaker)....there is a huge loss in sound reproduction....its simply not the same to my ears on stage....use two speakers, put on headphones its awesome//////the T2 stereo sample sounds are just that and made to be played in Stereo.....sorry for my morning rant this is a pet peeve of mine