Just curious why you think you need 1000 watts for a keyboard amp?

If you are going to use it as a main PA for you AND your arranger (and a whole band!), it is, IMO, still a bit over powered for most gigs an arranger player or OMB might need, and at 65 lb., quite the lug-fest...

Plus, keyboard amps rarely have the evenness of sound to double as a good PA. A 15" and a little tweeter is a combination you rarely see in a good PA cabinet. Only a 16kHz top end... not exactly a sparkling top end.

JMO, yada yada yada....
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An arranger is just a tool. What matters is what you build with it..!