Metropoulos Forum

Hi to all!
That's my first post on this forum and maybe my english wouldn't be perfect.
I've got a boss DD7 that volume jump even when bypassed.
It was ever on my pedal chain and i didn't notice that problem until i placed it on a loop switch.
When i power supply it, volume is much raised up.
Someone know what problem can be?

any problem I ever have with Boss pedals usually has to deal with the level pot have been moved somehow, or the 1/4" jacks have loosened up causing a ground sort. Specifically speaking about the same pedal as I own one myself. I will not get a volume jump though I will get cut outs or the volume will be cut in half when engaged ( usually caused by a loose jack). Sorry I cant help you more.