Korg should create tutorials for lower end keyboards not just top of the Range. The downloads section on Korg Forums hasn't be updated for ages for The pa50/80 when most of the will work with the KMA.
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Gem Wk4, Solton Ms60, Technics Kn5000, Korg Pa50sd, Yamaha Psr k1, Tyros 4, Korg Pa700