MXR GT-OD: the best value, most transparent Ts pedal ever? | Page 2 | The Gear Page
Can I modify my MXR classic overdrive's voicing to be more suitable for bass? | TalkBass.com
Modding MXR Zakk Wylde Overdrive - Barbarach BC
MXR M193 GT-OD (With Mod Switch) - musical instruments - by owner - craigslist
MXR GT-OD: the best value, most transparent Ts pedal ever? | The Gear Page
This is interesting. MXR Classic Overdrive GCM66 | Fender Stratocaster Guitar Forum
MXR Classic Overdrive | Page 2 | My Les Paul Forum
The MXR classic overdrive pedal has a hidden switch inside that changes to the Zakk Wylde overdrive. I've seen people mod their own switch for it, but I just drilled a hole
MXR ZW/GT/Classic OD | DIY Fever
MXR M193 GT-OD | Secret Switch That Turns It Into ZW-44 Zakk Wylde Overdrive | Dorin Ardelean - YouTube
Toggle Switch mod on the MXR Classic OD : r/diypedals