Berkshire County's tube amp repair shop.
Restoration, troubleshooting, and custom builds. Reliable repairs for the amps you love—and custom builds that are simple, serviceable, and dependable.
What I do
Repair & Restoration
Whether it's a routine re-tube, chasing down an intermittent crackle, or bringing a neglected vintage combo back to life, I handle it. I focus on making your amp safe and reliable while respecting the original circuit.
Learn more about repairsCustom Builds
I build hand-wired amplifiers designed entirely around the player. If you're looking for a specific tone in a rugged, highly serviceable format, let's talk about building exactly what you need.
See past buildsParts & Fiberboards
For the DIY builders and fellow techs, I manufacture high-quality fiberboards and stock select replacement parts. You can find my current inventory on the Moddjobbs eBay store.
Shop parts on eBay
Honest bench work.
When your amp is on my bench, my priority is getting it playing beautifully and safely. I believe in careful diagnostics, explaining your options clearly, and respecting the vintage originality of older amps.
No snake oil—just solid electronics work. I service most major tube amp brands including Fender, Marshall, Vox, Ampeg, and many boutique builders.
Recent Benchwork
Read all notes →Bringing a '65 Princeton Reverb Back from the Brink.
A look at a recent cap job and grounding overhaul on a beloved blackface classic...
Read the notes →Custom 18-Watt Build: The "Berkshire Brit".
Designing a rugged, gig-ready EL84 platform for a local session player...
Read the notes →Tracking Down the Phantom Crackle.
Sometimes the hardest part of the job is making the amp misbehave on the bench. Here's how we found it...
Read the notes →How it works
Reach out
Use the contact form to tell me about your amp and the issues you're having.
Drop-off
After confirming it's a fit, I'll send a link to schedule a drop-off. I'll get it on the bench for a thorough diagnostic.
Bench work & Pickup
I'll explain the required work, give an estimate, and get it fixed. Once it passes testing, it's ready to go home.
Serving Western Massachusetts
Located in the historic Stationery Factory in Dalton, MA, Moddjobbs provides dedicated tube amp service to musicians across Berkshire County and the surrounding region.
Location
The Stationery Factory
63 Flansburg Ave Suite 250
Dalton, MA 01226
Hours
Monday, Thursday, Friday, Saturday
11:00 AM – 4:00 PM
* Drop-offs by appointment only after initial contact.
Common Questions
How does the diagnostic process work?
Once the amp is on my bench, I trace the circuit, test the tubes and components, and identify the root cause of the issue. I'll then contact you with a clear explanation of what needs to be done and an estimate before beginning any major work.
Do you work on solid-state amplifiers?
My specialty and focus is exclusively on tube amplifiers. I do not currently take in solid-state or digital modeling gear for repair.
I have a vintage amp. Will repairing it ruin its value?
I am very careful to respect the originality of vintage pieces. I will only replace components that have failed or are unsafe (like old electrolytic capacitors or two-prong power cords), and I strive to use period-correct or high-quality modern equivalents when necessary.
What is your typical turnaround time?
Turnaround times vary significantly depending on the current bench queue and parts availability. I will give you my best estimate when we discuss the repair, but please understand that thorough diagnostics and testing take time.
What should I include when I contact you?
Please include the make and model of the amp, and a detailed description of the symptoms (when it happens, what it sounds like).