I GOT a TC-Helicon voicetone harmony M...
and when I pushed the harmony button.. I got all sorts of flangy aliasing in my keyboard...cause (the keyboard) was feeding back through the mike. I wrote TC.. he kept asking what mic i used and if my PA was behind me.. LOL... well anywho.... i have to use channel one and two to get the simulated stereo effect from the pedal and gives much more body with the L1...
TO SOLVE MY PROBLEM.... i simple went into comp/gate mode.. and dialed out the aliasing...
TA DAHHHHH ~!!!! nice little box i must say.
try that with a standard mixer.. lol

-mysticradio, July 28, 2008

full thread here