Marshall Origin 20 - Headfirst Mod + José clipping update
Bill of Materials, with Mouser part numbers, and instructions for our HF mod to the Origin 20.
Marshall JCM800 2204 - Headfirst Modded (April 2021)
A 1983 JCM800 2204 (4010) has come in for the full Headfirst mod treatment. Here is the documentation for the completed mods.
Video guides...more being added to our YouTube, do check!
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 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!
Jet City JCA50H - Headfirst Mod DIY Guide
Full walk-through, and some intro tones for the Headfirst mod to the JCA50H as demoed in this clip, and another video on this channel.
Marshall 1987x - Headfirst mods & DIY guide. (Jose Part III).
Final video in the 3 part series, our Headfirst modded 1987x. Walkthrough of the main dirty tones available in the amp, followed by a full walkthrough of the modded amps schematic and DIY guide.
Marshall JCM800 2204 - Headfirst Mods. Full play-through and DIY Guide.
A 1983 JCM800 2204 (4010) has come in for the full Headfirst mod treatment. Here in Part II, I run through the finished tones and features of the amp. The second section of the clip goes into a length description of the mods from both a schematic and wiring up perspective (for the DIY builders, modders and those that just want to learn!)
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