Mike, the Motion Sound keyboard amps do NOT suffer from any 'phase cancellation' problems at all, as both left & right channels are kept discretely separate from source to output.

Uncle Dave, with all the high praises you're giving the Bose PAS, what are you trying to do, send me to the poor house?!

The fact that you're given the option to either: send the single mixed 'L/R' signal out from the Tyros keyboard to the PAS, or the L & R signals out 'separately' to two separate inputs on the Bose PAS sounds like one of its feature which may be possibly helping to reduce 'phase cancellation', and which is more apparent when going from my Tyros to a single EV SxA100 PA speaker, as the EV only has 'one' input.

I'm really anxious to checkout the PAS myself now , though my music budget won't allow me to actually purchase one this year.

I hope someone coming to the Synthzone gathering in May might bring a Bose PAS.


Scott