This is a mod I'm calling the Zeta Drive Mod for your Joyo Ultimate Overdrive pedal to bring it up to spec for some very Dumble-esque tones. The cost is $25 plus $5 return shipping ($30 total) via Paypal or US Postal Money Order. Turnaround time is two days or less once I receive your pedal. You don't have a Joyo Ultimate Drive? For an additional $45 ($75 total) I will procure one for you and mod it to Zeta Drive specs. Please allow 7-10 additional days when purchasing an Ultimate Drive for modification. Feel free to email me at PCE.Effects@gmail.com for additional information or to arrange payment/shipment.