{"product_id":"marshall-mgp-9004-rack-mount-9000-series-preamp-1990-serviced-rev-101675530","title":"Marshall MGP 9004 Rack Mount - 9000 Series Preamp 1990 - 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\u003e1990 - MGP 9004 Series 9000 Guitar Preamp – Made in England\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eA seldom-seen piece of early-'90s Marshall rack history, the \u003cb\u003e\u003cstrong\u003eMGP 9004 Guitar Preamp\u003c\/strong\u003e\u003c\/b\u003e was introduced around 1990 as part of Marshall’s Series 9000 range.\u003c\/p\u003e\u003cp\u003eProduced shortly before the arrival of the JMP-1, which would go on to become Marshall’s best-known rack preamp, the 9004 represents an interesting transitional period when rack systems were becoming an increasingly important part of professional guitar rigs.\u003c\/p\u003e\u003cp\u003eThe 9004 is an all-solid-state, two-channel design with completely independent \u003cb\u003e\u003cstrong\u003eLead and Rhythm channels\u003c\/strong\u003e\u003c\/b\u003e. The Lead channel features Gain, Volume and three-band EQ, covering everything from mild breakup through to considerably more saturated Marshall overdrive, while the Rhythm channel has its own Volume and three-band EQ.\u003c\/p\u003e\u003cp\u003eA master section provides overall volume and an adjustable \u003cb\u003e\u003cstrong\u003eDry\/FX Mix\u003c\/strong\u003e\u003c\/b\u003e, with the rear-panel connections allowing external effects to be incorporated into a stereo rack setup.\u003c\/p\u003e\u003cp\u003e\u003cb\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMade in England\u003c\/li\u003e\n\u003cli\u003eEarly 1990s Marshall Series 9000\u003c\/li\u003e\n\u003cli\u003eSerial Number: \u003cb\u003e\u003cstrong\u003eY08186\u003c\/strong\u003e\u003c\/b\u003e\n\u003c\/li\u003e\n\u003cli\u003e1U rackmount guitar preamp\u003c\/li\u003e\n\u003cli\u003eTwo independent channels\u003c\/li\u003e\n\u003cli\u003eLead channel with Gain, Volume, Treble, Middle \u0026amp; Bass\u003c\/li\u003e\n\u003cli\u003eRhythm channel with Volume, Treble, Middle \u0026amp; Bass\u003c\/li\u003e\n\u003cli\u003eMaster Dry\/FX Mix\u003c\/li\u003e\n\u003cli\u003eMaster Volume\u003c\/li\u003e\n\u003cli\u003eFootswitchable channel selection\u003c\/li\u003e\n\u003cli\u003eHeadphone output\u003c\/li\u003e\n\u003cli\u003eEffects loop\u003c\/li\u003e\n\u003cli\u003eStereo outputs\u003c\/li\u003e\n\u003cli\u003ePower supply \u003cb\u003e\u003cstrong\u003enot\u003c\/strong\u003e\u003c\/b\u003e included but can be used worldwide with an AC 15v supply\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis example is in \u003cb\u003e\u003cstrong\u003eexcellent condition for its age\u003c\/strong\u003e\u003c\/b\u003e, with the original black Series 9000 faceplate presenting particularly well. There are only minor signs of use, as you'd expect from a piece of rack equipment now around 35 years old.\u003c\/p\u003e\u003cp\u003eThe MGP 9004 has become one of the more obscure Marshall products from this period. Overshadowed by the valve and MIDI-equipped JMP-1 that followed, these don't appear particularly often today and make an interesting addition to a Marshall collection or a period-correct late-'80s\/early-'90s rack setup.\u003c\/p\u003e\u003cp\u003eA great little piece of \u003cb\u003e\u003cstrong\u003eforgotten Marshall history\u003c\/strong\u003e\u003c\/b\u003e.\u003c\/p\u003e\u003cp\u003eAs with all our vintage amplifiers and associated equipment, this unit has been recently serviced by Dave Wittering at Prestige in Milton Keynes and has been fully checked and tested prior to sale and is ready to use.\u003c\/p\u003e\u003cp\u003e\u003cb\u003e\u003cstrong\u003eWorldwide shipping available.\u003c\/strong\u003e\u003c\/b\u003e We regularly ship vintage Marshall equipment throughout the UK, Europe, North America and worldwide. All equipment is carefully packed in-house, fully tracked and insured for transit.\u003c\/p\u003e","brand":"Marshall","offers":[{"title":"Default Title","offer_id":53664673005904,"sku":"0482","price":275.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0944\/0919\/5856\/files\/e19e36a7-7bc8-4bb2-b5d1-0151be62d8a9.png?v=1789895411","url":"https:\/\/overdriveguitars.com\/products\/marshall-mgp-9004-rack-mount-9000-series-preamp-1990-serviced-rev-101675530","provider":"Overdrive Guitars","version":"1.0","type":"link"}