roland/boss slow gear also does volume swells automagically...hope that helps

don't have much to add... but you asked about grounding...fwiw:unless the switch needs to ground something (ie you use a lug to ground the input of th...

new to the site and haven't gotten a "feel" for it yet so hope this wasn't a troll...that said,many possible causes... I'll list as many as I can thin...