Practicing this evening for an upcoming Swing band gig.
The battery in my Distillate was at that point of fading and starting to break up the sound.
I had my headphones through a Carvin MB15; finished running through some of our material and then started 'noodling'. By now the crunchy, breaking up tone was getting better . . . I was playing some chord stuff, actually kinda hacking my way through Blackbird and certain chords (notably D/ Gflat and Gflat/ A) were creating an overtone (undetone?) that made it sound like there was an octave drop effect on it!
My jaw dropped . . . Played some more and yep, it was definetly there. Took off the headphones and played through the amp and could not hear it.