Hey. Didn't know whether to post this in the amps section or here, but here goes.... I got a Digitech BP-200 multi pedal recently, put it in front of my Yorkville combo, mostly for rythum training, never have had the amp turned up over "5",and a few days later I turned the amp on w/o the pedal and it had a muffled, fluttering, noise to it with a slight buzzing sound. Definatly noticeable that something isn't right. Turned it off and back on and it was gone. Now about 10% of the time when I turn the amp on it's there again, most of the time turning it off and waiting a few moments will get it back right. Don't use the pedal with the Yorkville anymore. So I began running the pedal thru my old Crate 25 watt combo and now it does the same thing. It's not the cables, thought of that and bought new ones but it still happens. The only thing I can think of is I ran it thru the passive input on the amps (my bass is passive). Should you run a powered pedal thru the active input? Anybody else ever have this problem? Any help would be greatly appreciated.