Okay, I haven't owned many effect pedals, but when I cycled through the default settings on my boss giga delay, two of four of the presets began a low rumble that threatened to de-cone my speakers!
And no, I haven't RTFM yet!!!
Being as the search function revealed no preexisting thread, I figured WTF!
C'mon, who's got a boss giga delay?
I was trying it through the effects loop of my single recto, when it assaulted me.
It was obnoxious enough to make gangsters in their pimped rides envious!