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Marshall JMP-1 Replacement Power Switch Button

Every since I launched my replacement knob and bezel sets for the JMP-1, people have asked if I can supply either the original or a Marshall JMP-1 replacement power switch button.

Well the original button isn't available anymore but relating to JMP-1 fans' desperation, I persevered, looking for a suitable alternative.

Replacement power switch button for the Marshall JMP-1
The bottom JMP-1 has the original power switch button and although not identical, the top JMP-1 shows my replacement power switch button.

A few days ago, I think I found one! Three or four millimetres shorter than the original, it does actually fit but when depressed, sits a little closer to the front panel facia than the original. Apart from that, it looks good and works. 🙂

Replacement power switch button for the JMP-1 in the 'OUT' (off) position
My replacement power switch button for the JMP-1 in the 'OUT' (off) position
Replacement power switch button for the JMP-1 in the 'IN' (on) position
My replacement power switch button for the JMP-1 in the 'IN' (on) position

As such, my Marshall JMP-1 replacement power switch button has now been added to both my performance and studio knob and bezel sets. You can check them out here.

Many will know that I have a thing going with the Marshall JMP-1. Despite having a small collection of vintage Marshalls, I keep mon coming back to this little box only too often.

Marshall JMP-1 Full Service

I know the Marshall JMP-1 inside out and do what I can to keep those that are still breathing, going a little longer. 🙂

I've designed a couple of things for this special little box like my Eclipse bounce eliminator which stops the data entry knob from jumping or skipping. Then there's my recently released PML-TX01 replacement transformer which runs a lot cooler than the original, thanks to the use of a higher quality material for the laminates. Unable to convert the outputs to balanced, due to a severe lack of space and appropriate PCB connections, I promote my Transformer Coupled Interface Type 1, as the perfect interface to connect your JMP-1 to your desk or DAW.

I regularly keep an eye out for developments in the world of JMP-1 and sometimes come across little jems like this cool editor: http://jmp-editor.mattzick.com/

And of course if you just need your JMP-1 looked at, don't hesitate to contact me.