Bill,

Yamaha uses a floating ground system, which can cause problems if you are using two foot pedals that have a grounded, metal frame and touch each other. This has been a problem for many years and was never addressed. Boss pedals, the type that locked together, were notorious for this problem.

Good Luck,

Gary
_________________________
PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!

K+E=W (Knowledge Plus Experience = Wisdom.)