No sustain on the Pianet. I used a tape echo with a momentary foot switch on the one a used for a short time in the 80's. The Pianet was so much easier to carry than the Rhodes.

Duane
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Korg PA4x76, Yamaha CP-70 Electric Grand Piano, Zoom L20 mixer/recorder, Turbosound ip500 column speaker system, Zoom B1 FOUR Bass Multi-Effects Processor