James Engineering, LLC

03/31/2026

Deluxe Reverb listings are up now on eBay and Reverb! https://ebay.us/m/CFg9zg
You can also message me here to order yours directly.

8 ohm speaker outs (can also build with 4 ohm or 16 ohm output option). Bias pot added. 22 watts all-Tube Power.

03/29/2026

I get asked all the time how to fix Fender Tremolo thump, especially in 6G2 Princeton amps, so here's how I do it:
For trem thump: Diode across the outer lugs of Intensity pot. (Note polarity in the pic)
For trem pulse: this is actually interference, and is commonly picked up crossing the board to the grid of trem oscillator side of the second preamp tube. I use shielded wire from the Trem signal input, and it works every time.
I usually just use shielded wire anytime I run lead wire across/under/over the board. It prevents interference from getting into the signal and helps keep the noise floor down.

02/20/2026

Video from the latest batch of Princeton Reverb's

Princeton Reverb clone by James Engineering. One of my favorite amps. One of our most versatile builds, especially with the added boost switch in the push/pu...

02/16/2026

Inspecting some more builds, and letting lacquer dry over the long weekend.

09/29/2025

JTM45's are up for sale now! Buy direct for the best price.

Marshall JTM45 Clone by James Engineering. These amps are incredibly loud in person!Sound clips taken with SM57 into Focusrite interface. Guitar used is PRS ...

09/01/2025

Latest batch of 5E3 builds just finished. Updates to the ground scheme and lead dress made a noticeable improvement in the noise floor.
Order your amp before they're gone!
Contact me @: [email protected] or find us on eBay or Reverb

5E3 Deluxe build tone samples.Signal chain is Fender Strat straight into the amp into a 12" Mesa Black Shadow mic'd with a Shure SM57 into a Focusrite interf...

04/04/2025

Sometimes it's hard to keep up with my build schedule, so I hired an inspector to look over amps before I work on them.
She's not all that helpful, but I can't do it all by myself.
# delegatingtoatoddler

03/11/2025

I get lots of help unpacking guitar amp parts. This has increased my efficiency tremendously, because now I operate at the speed of a grown man plus a toddler.

03/02/2025

6G3 Deluxe builds are now available:

6G3 Deluxe clone by James Engineering. Sound clips taken with SM57 into Focusrite interface. Guitar used is a Fender Stratocaster straight into amp. Speaker ...

06/25/2024

I've got lots of help getting amps ready to ship.