http://www.zoom.co.jp/english/products/g1n/
"you can control effect parameters such as wah, pitch shift, volume, drive gain, modulation rate,
mixing balance of delay and reverb in real time. The choice is yours. The G1XN comes with a built-in expression pedal and a PEDAL ASSIGN key that makes it a snap to select the function operated by the pedal. Plus, you can switch the effect assigned to the expression pedal on and off by pressing up the pedal."
Czyli pedalem regulujemy proporcje wet/dry a nie zapetlenie, moze to wystarczy, a moze da sie i zapetlenie, nie wiem.
"Czy stowki", aczkolwiek miszczostfo sfiata to to nie jest