That's says something for the demand of the Pa500.....best bang for the buck....in an arranger.
Whoa!!!! Better wait till you try the BK5..side by side..

BK has better drums, better choirs ...scats missing from the PA 800 and I am sure the 500...
BK plays wav files , MP3s,....the PA500 can not install the optional MP3 card...
BK has 128 polyphonic compared to the 500's 80..
The Pa500 has a touch screen, but so dense to0 touch(again I am comparing to the 800)..
Get your butt over here so we can see how they compare...
BK5 comes in on average less SSSS than the PA500

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Roland G70 (2007), Roland BK9 (pending)....and a custom made Busilacchio accordion (1964)..4 Roland Cube 100 keyboard amps (1985)..Edirol M-10DX mixer (2010).. Toshiba Satellite laptop..and Podium Pro 1205a powered speaker
www.francarango.com