Marshall Mods

Marshall Ultimate 80's Mods

Marshall 80's Mod +

Marshall SS Mod

Marshall Plexi Mods

Marshall DSL/TSL Mods

Marshall JVM Mods

Marshall Mods

Customer Video

Solo Boost on a JCM800 2203

Solo Boost & 2 channel mod on a Vintage Modern

I offer many different mods for Marshall amps from simple gain boosts to extra gain stages and effects loops. Tubes swaps (EL34, 6550, 6L6, KT66, KT88), re-voicing, restoring, master volumes, effects loops, preamp outs, half power mods, or basic maintenance. You name it, I do it. I work on Plexi, JMP, JCM800, JCM900, JCM2000, DSL, TSL, Vintage Modern, JVM, SLX, Silver Jubilee, Major, and 30th Anniversary models of Marshall tube amps but the JCM800 and earlier are my favorites. Email me with what your looking for and we can discuss all the options available.

Plexi, JMP, JCM800 mods

Standard mods My standard mods are my bottom line price to get inside that particular model amp and make circuit changes. While I do have a mod in mind based on customer feedback on that model, my mods are all adjusted to fit your needs and change the amp in the ways you need it changed.

Ultimate Plexi mod Tweaks the amp circuit to be truer to the vintage plexi tones.

Ultimate 80's mod Added gain and voicing changes aimed at the 80's type rock tones. Cleans up very well with guitar volume. This mod will get into modern rock gain levels too. No added gain stage.

80's Mod + Similar to the Ultimate 80's mod, but with an added gain stage. Cleans up well with guitar volume. No extra tube.

SS Mod Added tube gain stage for brutal metal tones. Modern metal and modern rock type voicing for deep, thick, thundering tones. Cleans up well with guitar volume. This mod can cover a lot of ground tone wise.

Output transformer upgrade The newer Marshall reissues tend to have a harsh, edgy high end giving the amps a very bright tone. These amps benefit greatly by upgrading the output transformer. The new OT gives the amp a warmer, more organic vintage tone with a creamy high end that sings. The older Marshall amps don't benefit as much from a new transformer.

DSL/TSL mods

Standard mods My standard mods are my bottom line price to get inside that particular model amp and make circuit changes. While I do have a mod in mind based on customer feedback on that model, my mods are all adjusted to fit your needs and change the amp in the ways you need it changed.

My standard DSL/TSL mods tighten the amp up and increase the gain slightly, improve the clean channel, and give the amp a meatier tone with strong crunchy mids that cut thru. As part of the mod I modify the speaker output design flaw which causes output transformer failure. My mods don't disable and break your deep switch like the competitions mods do. My mods don't neuter the gain like theirs either.

Gain levels can be increased to metal type tones or lowered for more classic tones. Voicing can be thickened up for a more modern rock tone.

Output transformer upgrade The newer Marshall amps tend to have a harsh, edgy high end giving the amps a very bright tone. These amps benefit greatly by upgrading the output transformer. The new OT gives the amp a warmer, more organic vintage tone with a creamy high end that sings. The DSL/TSL amps don't suffer as much as the other Marshall reissues, but a new OT can improve the tone.

Added choke Installing a choke in an amp that doesn't have one can improve the bottom end punch, sustain, feel, and noise levels. The DSL/TSL amps don't come with a choke from the factory.

Marshall Mod Prices

All mods include a general check over, clean pots and jacks, clean and re-tension tube sockets, test caps, test tubes, and check bias

Plexi, JMP, JCM800 Mods

JCM2000 DSL/TSL Mods

Vintage Modern

JVM

Silver Jubilee

Other mods and custom work available