Trinity Amps

I am beginning to put together a Marshall 1974x, better known as the Marshall 18W amp. This all tube powered amp will be built in a head cabinet that can be hooked up to an external speaker cabinet of choice. This 1974x circuit won’t be stock though, I am using the 1974x circuit as a platform to try a few modifications and circuit tweaks/ideas. The end goal of the build is to have a low power Marshall JTM/JMP/Plexi type amp. Lots of big fat clear clean tones and sweet harmonic distortion.

The chassis, eyelet board, power transformer, output transformer, faceplate and head cabinet are coming from the good folks at Trinity Amps. The rest of the parts I am sourcing myself.

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Tramp

15 January 2011

This is a little single ended Class A amp design from Trinity Amps called the Tramp (a play on the Fender Champ, get it?). The amp is single channel with one 12AX7 and one output tube. The amp can run 6V6, 6L6, EL34, 5881, KT66, KT66, etc for the output tube. With the variety of output tube capabilities the amp can run from 5W-12W.

With only two tubes and one channel you’d think the amp would not be very versatile but that is not the case. The Tramp has two modes Tweed and Tude. Tweed mode is a nice full clean sound. Pull the push-pull volume pot for Tude mode which produces a grittier dirtier tone, great for overdrive. Tude mod is very large sounding with a sweet singing tone. A huge range of tones are covered with just two tubes. Many great sounds to be had!

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TC-15

July 15, 2010

The TC-15 is a Trinity Amps version of a 15W Matchless DC-30 clone. The Matchless DC-30 is a very popular 30W boutique amplifier that is modeled after various Vox “AC” amps. The DC-30 is well known as a classic point to point handwired amp that recreates many classic Vox tones in one package. The TC-15 […]

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Overdrive Extreme Preamp

May 7, 2010

This is one of my preamp designs, I call it the Overdrive Extreme. It is designed to be a small pre-amp capturing the big tones of the Dumble ODS amp. The circuit is a mix of solid state (JFET) and vacuum tube. With many controls and features the tones are highly flexible.

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Fender Tweed Deluxe

June 20, 2009

The Tweed Deluxe (5E3) is one of Fender’s classic amps. The Tweed Deluxe’s simple circuit packaged with ergonomic cabinet design have made it very popular over it’s 60+ year life time. The Tweed Deluxe’s simple design has also made it a popular amp to build among hobbyists. Though simple in design the Tweed Deluxe is […]

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Marshall 1974x (18W)

December 8, 2008

The Marshall 1974x (better known as the Marshall 18W) was an amplifier produced by Marshall from 1965 to 1968. At only 18W and being a combo amp with a single 12” speaker the amp was a change of pace from the loud 50W-100W Marshall stacks of the time. Though the 18W was never super popular […]

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