I got a Joyo Ultimate Drive a couple weeks ago but haven't gotten around to mod'ing it yet since my electronics tools and parts stash are in storage; next week I'll have completed my move and have all my stuff back, so I'll mod it sometime in the coming weeks. Anyway, has anyone mod'ed theirs to the infamous FB AD specs as detailed below? How does it sound? I must admit, I've listened to some FB AD demos that sounded good, so I'm curious if the mod will truly get you there or if there are other tweaks that have been missed. Thanks, Mark "Just so it's clear, if you are modifying the Joyo pedal, the changes are as follows: 330K resistor in parallel (solder across outside lugs) with "OD", 1K5 resistor in parallel with "T", 470K resistor in parallel with "V". Change capacitor "C9" to 100n (104). If your Joyo pedal does not have a third MOSFET (transistor) near the bottom of the board, you must instead change capacitor "C7" to 100n (104)."