{"product_id":"marshall-jmp-1-valve-midi-preamp-1992-serviced-rev-95171239","title":"Marshall JMP-1 Valve MIDI Preamp 1992 - Serviced","description":"\u003cp\u003e\u003cb\u003e\u003cstrong\u003eMarshall \u003c\/strong\u003e\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003cb\u003e\u003cstrong\u003eJMP-1 MIDI Valve Preamp – 1992\u003c\/strong\u003e\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003eThis JMP-1 has just been fully serviced by our ex-Marshall tech, so is ready to use.  It's currently set to 240v but we can change to 115v if required.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003eA true classic from the early ‘90s, the \u003cb\u003e\u003cstrong\u003eMarshall JMP-1\u003c\/strong\u003e\u003c\/b\u003e is one of the most iconic rackmount preamps ever produced. Blending genuine valve tone with full MIDI control, the JMP-1 became a staple in professional touring and studio rigs throughout the decade – and for good reason.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003eThis \u003cb\u003e\u003cstrong\u003e1992 example\u003c\/strong\u003e\u003c\/b\u003e features the sought-after early production spec and delivers everything from pristine cleans through to classic Marshall crunch and saturated high-gain tones. At its core are \u003cb\u003e\u003cstrong\u003etwo ECC83 (12AX7) valves\u003c\/strong\u003e\u003c\/b\u003e, providing authentic tube warmth, dynamics and harmonic richness that set it apart from fully solid-state rack gear of the era.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003eThe JMP-1 offers \u003cb\u003e\u003cstrong\u003efour main modes – Clean 1, Clean 2, OD1 and OD2\u003c\/strong\u003e\u003c\/b\u003e, covering a wide tonal range. The clean channels deliver clarity and sparkle, while OD1 captures classic Marshall crunch tones. OD2 pushes things further into higher gain territory, perfect for lead work and heavier styles.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003eWhat really sets the JMP-1 apart is its \u003cb\u003e\u003cstrong\u003efully programmable MIDI capability\u003c\/strong\u003e\u003c\/b\u003e, allowing you to store and recall up to \u003cb\u003e\u003cstrong\u003e100 presets\u003c\/strong\u003e\u003c\/b\u003e. Each preset can control gain, EQ, channel selection, effects loop and output levels, making it ideal for complex live rigs or studio setups. The \u003cb\u003e\u003cstrong\u003ebuilt-in speaker-emulated outputs\u003c\/strong\u003e\u003c\/b\u003e also make it a great direct recording solution.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003eThe programmable \u003cb\u003e\u003cstrong\u003eEQ section (Bass, Middle, Treble, Presence)\u003c\/strong\u003e\u003c\/b\u003e and output controls allow for precise tonal shaping, while the stereo outputs and effects loop make integration with rack effects and power amps straightforward.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003eCondition-wise, this unit is in \u003cb\u003e\u003cstrong\u003every good overall condition for its age\u003c\/strong\u003e\u003c\/b\u003e, showing only light cosmetic wear consistent with use. Fully functional and ready to drop into a rack setup.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003cb\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eEarly \u003cb\u003e\u003cstrong\u003e1992 production\u003c\/strong\u003e\u003c\/b\u003e\n\u003c\/li\u003e\n\u003cli\u003e2 × ECC83 (12AX7) valves\u003c\/li\u003e\n\u003cli\u003e4 modes: Clean 1, Clean 2, OD1, OD2\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003e\u003cstrong\u003e100 programmable MIDI presets\u003c\/strong\u003e\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003eProgrammable EQ (Bass, Middle, Treble, Presence)\u003c\/li\u003e\n\u003cli\u003eStereo outputs + \u003cb\u003e\u003cstrong\u003espeaker-emulated line outs\u003c\/strong\u003e\u003c\/b\u003e\n\u003c\/li\u003e\n\u003cli\u003eEffects loop\u003c\/li\u003e\n\u003cli\u003eRackmount 1U format\u003c\/li\u003e\n\u003cli\u003eMade in England\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cbr\u003eA cornerstone of ‘90s rack rigs used by countless touring players, the \u003cb\u003e\u003cstrong\u003eJMP-1 remains a hugely versatile and great-sounding valve preamp\u003c\/strong\u003e\u003c\/b\u003e that still holds its own today. Perfect for anyone building a classic rack system or looking for authentic Marshall tones with modern flexibility.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003cb\u003e\u003cstrong\u003eWorldwide shipping available. Professionally packed and fully insured.\u003c\/strong\u003e\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eAll of our amps are shipped in custom made Overdrive boxes with extra protection inside. We usually use UPS for international shipments. We have lots of experience shipping Marshall items worldwide and ship to North America and Europe on a weekly basis.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003eWe are proud to be an \u003cb\u003e\u003cstrong\u003eAuthorised Marshall Retailer\u003c\/strong\u003e\u003c\/b\u003e, with shipping available across the UK and all of Europe for new gear and worldwide shipping for our used items. We also have a dedicated showroom where you can experience and test the amps in person.\u003c\/p\u003e","brand":"Marshall","offers":[{"title":"Default Title","offer_id":53664679100752,"sku":"0194","price":798.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0944\/0919\/5856\/files\/e5cbb0eb-7306-457b-bb3f-2d2891ebbe3d.jpg?v=1789895428","url":"https:\/\/overdriveguitars.com\/products\/marshall-jmp-1-valve-midi-preamp-1992-serviced-rev-95171239","provider":"Overdrive Guitars","version":"1.0","type":"link"}