Judging by the pics I see different speakers & tweeters on each, The button layout is pretty identical on the deck they eliminated the below display rockers & put buttons.....
I wonder what the real differences are between the s700 & s900 looks like the internal features could be the answer? New styles, SA sounds,Polyphony, Ram, Hard drive, New Vocalizer, Lyrics TXT reader, Rear panel routing's, dual Mic Inputs with seperate VOL controls, AUX in/outs, Mixer & CMP settings like the Tyros????????????