Hey - they've added more info here! Thanks, Mike. Apparently the "expansion boards" the PA1X uses are the same EXB-series board used in the Karma and the Triton. From the reviews of the EXB-PCM08 (Grand Piano expansion board) used in the Triton, the expansion boards DO NOT add polyphony - they only add 16 MB of PCM samples to the existing sound engine. Had my hopes up for nearly a minute there. Looks like the 62-note polyphony of the PA1X Pro (no coincidence that it's the same polyphony as the Triton) is locked in stone. Drat! So near and yet so far...

[This message has been edited by The Pro (edited 07-22-2003).]