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Marshall JMP-1

Posted by on April 19, 2020

Since 1998 I have been a long standing user of the Marshall JMP-1 Pre amp. It has been my go to amp for many years. I have had many versions of it, some better, some worse. I have tweaked the amp in some cases. And more recently, I have managed to get a fully unused on. Therefore, I decided to create a Facebook page for the Marshall JMP-1

Here is the link

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