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Marshall JMP-1 Hum

Many users of this well known pre-amp, will be familiar with the infamous Marshall JMP-1 hum! Emanating from the transformer, the hum is caused by oscillating laminates which don't just produce hum but also can generate a huge amount of heat, thereby potentially reducing the life expectancy of your transformer.

Months in the making, I'm delighted to announce my new PML-TX01 replacement transformer for the Marshall JMP-1.

A replacement transformer for the Marshall JMP-1, my very quiet PML-TX01
And here it is... my PML-TX01 transformer for the Marshall JMP-1

Looking just like the original TXMA-00014 and being pin-for-pin compatible, my PML-TX01 is identical except for one feature; the material used for the laminates is of a much higher quality. This single unique aspect of the PML-TX01 reduces the likelihood of laminate oscillations, excessive heat and mechanical hum.

My PM-TX01 is of course pin-for-pin compatible with the original Marshall TXMA-00014
My PM-TX01 is of course pin-for-pin compatible with the original Marshall TXMA-00014

In a quiet recording environment, the Marshall JMP-1 hum is super-annoying and at last, a solution is now available. If you have hum issues with your JMP-1, then I strongly suggest that you consider this little upgrade.

This item regularly goes out of stock, I'm afraid but... I encourage customers to back-order. Unfortunately, the crappy e-commerce plug-in I use, only tells the links (like the one above) that the item is out of stock. What 's the bloody point of that?!?!?! So if you want this, then please just visit the PML-TX01 page on my e-store here.