I have actually been running mine on 12 volts. I didn't think anything of it, because it worked fine.
Then in the last week or so, it seems to be stuck on high pass, and if you go from LP>BP>HP it just gets higher pitched.
I had been noticing the distortion on bass notes (think intro to Estimated), but I had been just playing it softer and it sounded pretty good, I thought it was just how the pedal worked.
I took it into the local fix it shop, and the guy there told me to try a 24 volt supply (along with fixing the crappy input jack).
Will this fix her, or is it something else? Should I just buy another Qtron off the bay?