I just bought two Roland KC350's to use with my PA1XPro. They sound just amazing! Very clear and loud. The bass is very tight and plenty without the KCW1 Sub. I was thinking of buying a KCW1 sub anyway. The stereo link feature on these is excellent. No need for an external mixer since they have four channels each. They also have RCA auxilary in if you need to hookup a CD player.

If you are in the market for a keyboard amp, I highly recommend checking these out.

I wanted to buy a bose pas but at less than half the price, I am a happy camper with these two amps.