I'm having some serious feedback problems with my Digitech DF-7. It gets worse when I turn on my Boss CS-3. I thought I'd get a noise suppressor to solve the problem but when I came to JB Megamall to test one (a Boston Noise Gate), I couldn't hear any difference.
I'm not sure if the unit doesn't work or I'm just totally clueless about using it. ^^;
Can anyone shed some light on this issue?