{"product_id":"marshall-jmp-1992-super-bass-2-channel-100-watt-head-1971-rev-93386572","title":"Marshall JMP 1992 Super Bass 2-Channel 100-Watt Head 1971","description":"\u003cp\u003e\u003cb\u003e\u003cstrong\u003eMarshall\u003c\/strong\u003e\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003cb\u003e\u003cstrong\u003eJMP - Super Bass 100\u003c\/strong\u003e\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e1971\u003c\/p\u003e\u003cp\u003e\u003cbr\u003eSerial No. SB\/A 4584C\u003c\/p\u003e\u003cp\u003e\u003cbr\u003eWe’re pleased to offer this JMP Super Bass 1992 head from 1971, built during the desirable hand-wired tag-board era.\u003c\/p\u003e\u003cp\u003eChassis: Original output transformer, original choke, replacement TAD laydown power transformer, original mustard caps. The original Bulgin power supply is still present and the head will come with a power cable. \u003c\/p\u003e\u003cp\u003e\u003cbr\u003eIt’s just had a full check-over by Dave at Prestige Amp Servicing — an ex-Marshall factory technician — with several service parts replaced, listed below.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e V2 \u0026amp; V3 Preamps replaced ECC83\u003c\/li\u003e\n\u003cli\u003eV1 \u0026amp; Phase Inverter supply resistors x 4\u003c\/li\u003e\n\u003cli\u003ePAT Tested \u003c\/li\u003e\n\u003cli\u003eBias Circuit smoothing caps 10uf, 100v\u003c\/li\u003e\n\u003cli\u003e4 x new Marshall Branded EL34's\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003ePre Amp Valves: PM \u0026amp; RUBY ECC83\u003c\/p\u003e\u003cp\u003ePower Valves: Marshall EL34\u003c\/p\u003e\u003cp\u003eCosmetic: Original head shell and hardware.\u003c\/p\u003e\u003cp\u003eThe output (ohms) and mains voltage selectors have been updated to the more modern RS style.\u003c\/p\u003e\u003cp\u003eThis listing is for the head but we also have a selection of Marshall cabs available separately.   \u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003ci\u003e\u003cb\u003e\u003cstrong\u003eMains voltage selector - 110v, 120v \u0026amp; 240v - so can be used worldwide.\u003c\/strong\u003e\u003c\/b\u003e\u003c\/i\u003e\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.\u003cbr\u003e\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":53664678445392,"sku":"0123","price":2999.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0944\/0919\/5856\/files\/0d5908ca-abd4-4d01-a933-609108fb602b.jpg?v=1789895422","url":"https:\/\/overdriveguitars.com\/products\/marshall-jmp-1992-super-bass-2-channel-100-watt-head-1971-rev-93386572","provider":"Overdrive Guitars","version":"1.0","type":"link"}