Guitar Tube Amps, DIY PCB supplies & Amp Mods. Melbourne Australia.

Video guides

Marshall Origin 20 - Headfirst mod.

Want more firepower from your Origin 20? Full details here, including stock circuit review, mod schematic and PCB modding guide.

Marshall Origin 20 - Headfirst Mod, Instructions and BoM

Following on from the first Headfirst Origin mod, this clip contains a short Strat tone demo then head into a detailed walkthrough of the Bill of Materials and Instructions for completing this mod yourself....or for your local tech

Marshall JMP/JCM800 2203/2204 - Jake E. Lee Spec Mod Guide

Mod your Marshall JMP or JCM800 (2203/2204) into a JEL100 spec monster. Here's a detailed walkthrough and instructions for completing this mod yourself....or for your local tech!