Join Date: Dec 2000
Location: A Mile High (USA)
Actually, the only "extra" controls (outside of the standard piezo setup) would be the (2) small buttons/switches that are near the tremolo. I'm guessing that the additionl controls are probably an on/off button for the Sustainiac and a frequency/mode selector. Otherwise, it has the same control layout as a standard EB/MM JPM w/ the piezo:
(top horn)- piezo/magnetic pickup selector
(bottom)- magnetic pickup selector, magnetic volume, magnetic tone, piezo volume.
And the trem on the EB/MM JPM is nothing like a standard Strat-type non-locking trem. I've abused the trem pretty wildly both in the studio and live, and have had ZERO tuning/intonation issues. As long as you stretch the strings out properly, it's every bit as stable as any locking trem I've had (past and present).