The PK5 pedals have a sustain function. It was continuous so I had to hit the cancel button as a song ended. Not the best setup but it worked. My Bk9 can't match the XK3 for organ sounds but offers a lot more in other sounds and programmability.
I'm surprised there's no Acoustic Bass in the SK3.
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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