ROS 2000 TSL variant Production board image

A Video fitting the ROS-2000 board

To compliment the written instructions for fitting our ROS-2000 boards to Marshall JCM-2000 DSL50/100 and TSL100/122 amps, we have a video showing the steps. You can download the fitting instructions  on this link. The following video walks you through the design features of our board Check out the product and order here We ship worldwide.  

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ROS2000 DSL Variant

ROS-2000 Board Design Overview

The ROS -2000 board is our upgraded, UK-made PCB for the valve board in Marshall JCM2000 DSL 50, DSL 100, and TSL 100/122 amps. We ship these worldwide, and the board comes with full instructions. A picture is worth a thousand words, so here is a 14-minute video explaining the key features of our design. Rowan Diskin, board designer of Keld Ampworks walks through the details and the reasons for how the design was implemented.  Check

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Clone JMI AC30 image

An example of a JMI era AC30 clone build

One of our nice customers built a 60’s Vox AC30 clone.  He built whole thing including the cabinet and covering with Tolex. I have a lot of respect for his ability to tackle everything from wiring to carpentry. and the patience and determination to work on this project. There are a lot of pictures showing the stpes. Note that this was intended as a reocrod fo the project and NOT a step by step instruction

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Royal Mail cartoon van in the snow

Shipping Info

Shipping info .No shipments on 1st January and then back to normal from 2nd January. Deliveries usually take a day or two longer than normal in this Xmas- New Year twilight zone, Here is a summary of the Royal Mail UK shipping services. UK Services : Royal Mail’s delivery aim is 1/2 working days for  24 hours tracked 2./3 working days for 48 hours tracked.  They do not guarantee an exact day.  Sunday is not

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Valves in the mosh pit image

From the Bench to the Stage: How We Really Test Valves

We don’t just tickle output valves with a few polite volts and hope for the best. No, we run them at the sort of voltages you’ll actually find inside a real amp – the levels where the magic (and sometimes the smoke) happens. Every set comes with its own test certificate, spelling out exactly what conditions the valves endured. Think of it as their gig contract – proof they’ve already played the loud bit before they arrive

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Amp repairs in the Scarborough UK Area

This is info for folks in the Scarborough UK area.  We are now focusing on our website business and so we have run out of time to fix amps ! We do carry extensive stocks of quality valves, electrolytic capacitors and valve bases  and always happy to give advice. There are some good amp repair folks who are not too far away. We recommend Paul at Cuenet Services in Sunderland.   If you are an

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