Find Reviews and Compare Prices for:       All ProductsGuitar Amplifiers     4.3 (2)   Add a review Marshall JMP-1 MIDI Preamp   One of the original rackmount Valve MIDI Preamps, Marshall's offering endures the test of time. Have a question? Just Ask! Member Reviews Compare Prices Product Spec Send to a friend Set Price Alert Searched Marshall JMP-1 MIDI Preamp in 150 stores, 2 results found Image Description   Store   Price 1992 MARSHALL JMP-1 MIDI PREAMP PRINT AD If this item doesn't belong here, click Remove and help us keep our results accurate.   eBay   0 Store Reviews   $7.99 (used) Go to Store Marshall JMP-1 MIDI Guitar Preamp If this item doesn't belong here, click Remove and help us keep our results accurate.   eBay (auction)   0 Store Reviews   $365 (used) Go to Store You can also search these stores   Find this product on Amazon   Amazon.com   2 Store Reviews   Search on Amazon Are we missing a store? Let us know! Something wrong in this page? Let us know! Related products: More Guitar Preamps Guitar Amplifiers Other Guitar Amplifiers internal use: spec75 spec406