Nice setup but actually the only advantage is being able to change sounds without a button push. And I agree the BK9 can do all of that. I'ts allowed me to simplify and the only other keyboard I have left is the Privia 350 for real piano touch.
But it does look cool to be surronded with all that stuff.
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Bill in SC --- Roland BK9 (2) Roland BK7M, Roland PK5 Pedals, Roland FP90, Roland CM30 (2), JBL Eon Ones (2) JBL 610 Monitor, Behringer Sub, EV mics, Apple iPad (2) Behringer DJ mixer