{"product_id":"marshall-jmp-1987-50-watt-guitar-amp-head-1972-black-rev-101191070","title":"Marshall JMP 1987 50-Watt Guitar Amp Head 1972 - Black","description":"\u003cp\u003e\u003cb\u003e\u003cstrong\u003eMarshall \u003c\/strong\u003e\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003cb\u003e\u003cstrong\u003eJMP 1987 – 50W Hand Wired Head - 1972\u003c\/strong\u003e\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003eSerial Number: S\/A 2264D\u003c\/p\u003e\u003cp\u003e\u003cbr\u003eInspection Sticker Date: 09\/03\/1972 - (9th March '72)\u003c\/p\u003e\u003cp\u003e\u003cbr\u003eA superb example of a vintage Marshall JMP 50 Lead Model 1987 from 1972. Hand wired and loaded with classic early-’70s Marshall tone — rich mids, aggressive crunch, and huge dynamic response.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003eThis non-master-volume 50-watt head delivers everything from warm vintage cleans to the unmistakable British roar heard on countless classic rock records. Still mostly original circuit, it's fully serviced, tested, and sounding exceptional.\u003c\/p\u003e\u003cp\u003eA proper player’s amp and a sought-after vintage piece — honest, original, and ready to go. \u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003cb\u003e\u003cstrong\u003eFreshly serviced \u003c\/strong\u003e\u003c\/b\u003eby ex-Marshall senior engineer Dave Wittering (Prestige Amp Servicing), this amp is in excellent working order, fully tested, and ready to go — free from the usual issues associated with long-stored vintage gear.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003cb\u003e\u003cstrong\u003eChassis:\u003c\/strong\u003e\u003c\/b\u003e \u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eReplacement OEM mains transformer - TXMA-00004\u003c\/li\u003e\n\u003cli\u003e784-139 output transformer\u003c\/li\u003e\n\u003cli\u003e 352-114 choke\u003c\/li\u003e\n\u003cli\u003eThe majority of solder joints are original with red shellac\u003c\/li\u003e\n\u003cli\u003eOriginal Mullard mustards\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cb\u003e\u003cstrong\u003eServiced parts include: \u003c\/strong\u003e\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eOEM Marshall EL34 B Output Valves\u003c\/li\u003e\n\u003cli\u003eBias Smoothing Caps\u003c\/li\u003e\n\u003cli\u003eScreen Resistors - 199-1697\u003c\/li\u003e\n\u003cli\u003eDedicated Chassis earth\u003c\/li\u003e\n\u003cli\u003eMains \u0026amp; HT switches\u003c\/li\u003e\n\u003cli\u003eMains \u0026amp; Ohm Selectors have been cleaned \u0026amp; re-tensioned\u003c\/li\u003e\n\u003cli\u003eInput \u0026amp; Output sockets replaced\u003c\/li\u003e\n\u003cli\u003eSet up with Bias to correct spec\u003c\/li\u003e\n\u003cli\u003eFull health check and component test\u003c\/li\u003e\n\u003cli\u003ePAT Tested.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cbr\u003e\u003cb\u003e\u003cstrong\u003ePre Amp Valves:\u003c\/strong\u003e\u003c\/b\u003e ECC83S - 12AX7 - JJ Branded( V2 \u0026amp; V3) - V1 Possibly Marshall\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003cb\u003e\u003cstrong\u003ePower Valves:\u003c\/strong\u003e\u003c\/b\u003e Marshall Branded EL34 B's - VLVE-00087\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003cb\u003e\u003cstrong\u003eCosmetic:\u003c\/strong\u003e\u003c\/b\u003e Original headshell, feet and logo. The Handle and some tolex looks to have been replaced at some point.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003eMains voltage selector - 110v, 120v \u0026amp; 240v - so can be used worldwide.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003cb\u003e\u003cstrong\u003eWorldwide Shipping Available\u003c\/strong\u003e\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003eAll of our heads 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":53664672874832,"sku":"0481","price":3599.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0944\/0919\/5856\/files\/e54ca57b-6264-4a33-af88-9f0b62637aa9.jpg?v=1789895408","url":"https:\/\/overdriveguitars.com\/products\/marshall-jmp-1987-50-watt-guitar-amp-head-1972-black-rev-101191070","provider":"Overdrive Guitars","version":"1.0","type":"link"}