The only dedicated keyboard amps I've owned were Peavey's KB-150 and KB-500. Both were brutes to haul around, the vocals were always muddy sounding, and the keyboard, at performance levels, sounded distorted.

Gary
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!

K+E=W (Knowledge Plus Experience = Wisdom.)