I agree with what UD says. I think I like the actual amplifier section better ( it sounds cleaner ) on the 2000 series boards than on the PA80 / 60. This is different from instrument sounds though. I prefer more of the instruments on the PA80 / 60 than on the 2000 / 2100, but this is just my preference, and really both boards sound good.
I like the dance styles better on the PA80, but.... the PSR2000 gets an edge because of the way the multipads work .
AJ
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AJ