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Marshall JCM2000 Bias Mod Kit DSL and Matched Pair Tung Sol EL34B

In stock now ! Place your order and we will ship to you as soon as we have them in stocked.We assemble these boards in the UK.

We now have fast international shipping options available – just enter your country and post/zip code

Marshall JCM2000 amps when ageing tend to have the main printed circuit board start to become slightly conductive and bias to the EL34 output valves becomes unstable of goes very high and cannot be adjusted.

This kit totally fixes this issue,

 

 

£94.99

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Product Description

Marshall JCM2000 Bias Mod Kit DSL and Matched Pair Tung Sol EL34B

Save money with this package deal for your 50 watt amp.  

This kit consists of the Marshall JCM2000 Bias Mod Kit DSL and a matched pair of Russian EL34B Tung Sol valves. The valves come with a test certificate.  Marshall have chosen this version of EL34 in their current amp production. tey offer superb Marshall tones and durability. The EL34B’s have 180 day warranty.

Marshall JCM2000 amps when ageing tend to have the main printed circuit board start to become slightly conductive and bias to the EL34 output valves becomes unstable or goes very high and cannot be adjusted. This results in high valve anode current which cooks or wrecks the output valves.

We can now send much faster to International customers. Just enter your post/zip code and country at checkout

This kit totally fixes this issue without the need for replacing the whole main circuit board. If you know how to use a soldering iron and know how to work on a circuit board then this is an easy upgrade.

The kit consists of a little printed circuit board with full instructions and picture on how to fit the board and saves on replacing the whole main board. Some expertise in soldering is needed to install this board. If you are not sure get an amp tech to fit the board. There are high voltages in these amps which can be lethal so please be extremely careful

This version is designed for the DSL series. There is also a version for TSL amps..  The kits are assembled, stocked,  and shipped  from the UK.

We have used this kit in a Marshall amp ourselves and it completely solved the cooking output valves problem.

The product is supplied with the board, adhesive stand offs to mount the board, and full step by step picture and written instructions. We updated the instructions on July 2020.. This is not a Marshall product but is a solution that is fully proven through many folks following our instructions and successfully solving and overheating amp.

Full instructions are included with your board. we can email a link to you on request so you can see how to install

There is special drill bit needed to drill the printed circuit board and this is included with the kit.  .  There are shipping options for faster UK , European and worldwide shipments at checkout

 

 

Fitted Board in a DSL 50 Amp

Fitted Board in a DSL 50 Amp

Recent Customer Reviews


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"I’d spent some time upgrading my Blues Junior mk2 with better-spec components; larger pine cab, Cannabis rex, caps & resistors. What difference could alternative preamp tubes make? Well…I’ve already thanked Stewart for hooking me up with these beauties. 7025’s in the V1 & 2 sockets really have cut background noise to pretty-much nowt & any ‘loss of gain’ (I use pedals for this anyhow) is made up for by being able to play at increased vol & greater clean headroom. I lik’em & you might too!." - MH bought EH 7025's and reviewed on 18th July 2021

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"Awesome" US Cusomer S.O. bought Marshall DSL Stable Bias Board kit and reviewed on 18th July 2021

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