Hi, I have something interesting, as everyone waited for some time. Photos of MXR Fullbore Metal. I'd have more, trace the path and made a schematics, but unfortunately my friend sold his brilliant effect (stupid ...). Maybe someone has a few photos, from which we could learn something. Or partially trace this.
Just picked up this pedal and love it. Want to learn more about how it works but, I'm so not surprised the schematic is not readily found on dem internetz. This pedal does what it does very well. I would love to see some more control over the scoop, maybe a q adjustment. I have to say, for $50, I can't say I'm disappointed.