My HD500 IS MAKING WIERD SOUNDS WHEN I PLAY NOTES LOWER THAN THE B ON THE 5TH STRING 2ND FRET.
I have tried diferent guitars, cords, speakers/headphones/monitors.
The HD500 is plugged into a Furman power conditioner.
The sound is like a "bass octave/chorus-ey". I noticed a week ago during a gig. I have been troubleshooting at home and swapped out every variable I can think of. The sound is present on clean presets, but gets more pronounced with more compression orhigher gain.
I am stumped. Anyone have a clue or suggestion?