This is probably more to do with double bass or EUB players... Is anyone using this finding any good effects for acoustic bass or EUB? I know it's primarily designed for acoustic guitar but has a setting for double bass. I got mainly for the feedback eliminating function because this one room we play wreaks havoc on my EUB; a corner room with a hollow stage, and on to top it off, the mains/subs are angled inward toward the center of the room, which I have no control over. Well I tried it there the other night, using the para eq in it I had tamed down a louder boomy tone, and used the feed back button on an offending frequency at sound check. I thought everything was ok until I played it about 30 minutes in, then boom... I started getting some feedback. I didn't have anytime to fix it from there so wound up not playing it the rest of the night... I wasn't even directly in front of my amp with it... I got it home and tried cutting out the mods, and I think that would have fixed it but won't know until we are back there. Is anyone else having any success with this pedal. I have to have a preamp for my EUB, I was just hoping to utilize some of the other features. Thanks!