Pedal de efeitos de guitarra overdrive MXR GT-OD : Amazon.com.br: Instrumentos Musicais
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 ZW/GT/Classic OD | DIY Fever
MXR GT-OD and Zakk Wylde Overdrive with Switch. | Reverb