Originally Posted By: kbrkr
So sound wise, I don't see where there is any difference from the Pa2x; ON PAPER.


From the Korg Pa3x page on korg.com:

1) Professional Final Mastering tools from �Waves Audio� plugins �MaxxAudio � � suite.

2) Up to 8 Stereo Effects at once, including flexible Master and Insert routing for Styles and songs. New Vintage Effects from the acclaimed SV-1 Stage Vintage Piano

These are clearly improvements. The Pa2x/Pa800 did only have 4 stereo effects and apart from the equalizer there was no user control of the mastering stage. I remember that my Pa800 had a somewhat overly compressed sound. I would guess that the Waves plugins sound much better.
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Yamaha PSR-S770, Korg Krome 61