13 April 2014:
Now offering true bypass modifications on the MXR Blue Box for $35! Check out the new Repeater Tremolo! We have a few more pedal videos coming up this week. Also a demo that I've been dying to shoot for years!





We are a custom effects shop located in Boston, Massachusetts, USA and specialize in building, modifying, repairing, and maintaining guitar pedals. Our blog includes some background information on custom work we do. The gallery is full of our favorite past projects. Follow us on Facebook for more frequent updates of things that may not make it on the official FXdoctor page and join our newsletter for occasional updates.


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