REAL stereo too (hurray!). Somebody's been paying attention. Very interesting - looks like this amp is custom-made for solo keyboard acts. I'm quite happy with my Motion Sound stereo amps still but I'm looking forward to reading some reviews on this Roland amp/PA.
BTW/FYI: I experienced my first case of phase cancellation with my Yamaha 9000 Pro this past week - I was plugged into a house Mackie PA system that is normally set for stereo operation, but somebody had (probably accidently) switched it so the subchannels were summed together into mono. Sure enough, I thought something was wrong with my keyboard: the upper midrange notes sounded thin to the point that some notes nearly vanished altogether. It really freaked me out the first set but I managed to make it to the break and then I found what had happened. When I returned the PA to stereo mode, everything sounded fine again. What's even more interesting is that even in mono mode the "house music" (an XM reciever wired for stereo) sounded fine - it was just my 9000 Pro that sounded awful, which prompted me to think the keyboard wasn't working right initially. All was cured when stereo function was returned to the mixer.
I don't want to rehash the old mono vs. stereo debate, and to be fair I haven't tried just using the right channel/mono output of my 9000 Pro to see if the same thing happened as when the L/R channels of the house PA were summed together, but keyboard phase cancellation is no longer just a theory to me now that I've heard it happen firsthand.
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Jim Eshleman
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