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PRODUCTS - With over forty years of electronic design and manufacturing experience, mostly in the audio industry, I still love taking on challenges and winning! For me, designing something and seeing it through to a commercial product, is as creative as writing and producing in the studio. Under this category,  you can browse through the things I make to help musicians, producers and engineers, along the way. 🙂

SERVICES (Technical) - Don't let the fact that you're unable to install one of my systems into your beloved piece of vintage equipment scare you off! I'm more than happy to do that for you. I also repair and  service studio and live performance gear as well as renovate vintage synthesisers, signal processors and guitar amps.

SERVICES (Creative) - I've been involved with studio and live music production, since 1985. It's my passion and I have a huge wealth of knowledge and experience. Being a musician myself, I'm able to connect with my clients and make magic things happen. I'm also a keen photographer, website and graphics designer. If you think I can be of assistance, please do check out this category.

UPCYCLED AUDIO - My project for 2023, Upcycled Audio offers vintage equipment that's been renovated and / or upgraded with a view to deliver classic quality performance with modern convenience. You can read more about it here.

Eclipse - Marshall JMP-1 Skipping Data Encoder Fix

In stock
Product Details

Finally a solution for the annoying skipping data knob on the Marshall JMP-1, Eclipse is a small 'bounce eliminator' which can be installed by anyone with a little technical competence.

Back in 1992, Marshall decided to connect the data encoder in its new MIDI valve pre-amp, directly to the processor. Over time, this causes problems and it can become quite frustrating to manually select patches or enter parameters as the data encoder seems to jump or skip past where you want to go!

Eclipse addresses this problem permanently! With a little technical competence, Eclipse only requires one solder joint.

Available with optional replacement data encoder which I totally recommend as they're getting hard to find!

Fully illustrated installation instructions available after purchase.

Read more about Eclipse here.

IMPORTANT: Please note that the wires coming off the original encoder may not be long enough to reach Eclipse when it is positioned in the place shown in various illustrations. If you therefore do not intend to purchase an encoder with your Eclipse, please be prepared to lengthen / replace the wires that come off it.

HINT: While you've got your JMP-1 open, why not consider adding my new replacement CR2032 battery adapter for only 15 GBP?

Eclipse is hand-built in Hemel Hempstead, United Kingdom.


Annoyingly, my shopping cart software displays shipping information after you’ve confirmed your payment option. I’m trying to get this changed as I believe that customers should always know exactly what they’re paying. Of course, I have no control over import duties but I try my best to give clear, concise information.

I therefore maintain a ‘Shipping Prices’ page and visitors to my website who are interested in buying stuff, have the opportunity to check shipping costs to their country / region.

My shipping costs are calculated on item value and not weight as everything is insured.

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