{"title":"Vintage Marshall Amplifiers For Sale – JTM45, Plexi, and Super Lead Amps through 1979","description":"\u003cp\u003eDiscover \u003cstrong\u003evintage Marshall amplifiers for sale\u003c\/strong\u003e, from early JTM45s and Plexi-panel Super Leads to metal-panel and master-volume amps from the 1970s. The Marshall stack defined the sound of British rock and hard rock, and an original 1960s or 1970s Marshall head delivers the dynamic, touch-responsive crunch that modern reissues are built to chase.\u003c\/p\u003e\n\u003cp\u003eAt Mahar’s Vintage Guitars, every vintage Marshall is inspected, tested, and documented before it ships. We photograph the chassis, transformers, and panel up close, and we disclose service history, replaced parts, and modifications in every listing. We also take great care when packing any amp for shipment. Our inventory changes constantly, so check back often.\u003c\/p\u003e\n\u003cp\u003eWant a newer amp? Explore our \u003ca href=\"https:\/\/www.maharsvintageguitars.com\/collections\/used-marshall-amplifiers-for-sale\" title=\"Used Marshall amplifiers from the 1980s to today at Mahar’s Vintage Guitars\"\u003e\u003cstrong\u003eused Marshall amplifiers (1980s to today)\u003c\/strong\u003e\u003c\/a\u003e, see our full \u003ca href=\"https:\/\/www.maharsvintageguitars.com\/collections\/marshall-guitar-amplifiers-vintage-used\" title=\"Marshall amplifiers at Mahar’s Vintage Guitars\"\u003eMarshall amplifiers collection\u003c\/a\u003e, or browse \u003ca href=\"https:\/\/www.maharsvintageguitars.com\/collections\/vintage-fender-amplifiers-for-sale\" title=\"Vintage Fender amplifiers at Mahar’s Vintage Guitars\"\u003evintage Fender amplifiers\u003c\/a\u003e and \u003ca href=\"https:\/\/www.maharsvintageguitars.com\/collections\/vintage-vox-amplifiers-for-sale\" title=\"Vintage Vox amplifiers at Mahar’s Vintage Guitars\"\u003evintage Vox amplifiers\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.maharsvintageguitars.com\/pages\/who-buys-vintage-instruments\" title=\"Mahar’s Vintage Guitars buys and trades vintage Marshall amps\"\u003e\u003cstrong\u003eWe buy, sell, and trade vintage Marshall amplifiers\u003c\/strong\u003e\u003c\/a\u003e and related gear. Learn more on our Who Buys Vintage Instruments page.\u003c\/p\u003e\n\u003ch2\u003eBuying Guide: What to Know Before You Buy a Vintage Marshall\u003c\/h2\u003e\n\n\u003ch3\u003eJTM45, Plexi, and the metal-panel era\u003c\/h3\u003e\n\u003cp class=\"my-0\"\u003eMarshall’s first amp, the JTM45 of 1962, was strongly influenced by Fender’s Bassman circuit before Marshall developed its own voicing. “Plexi” refers to the clear plexiglass control panel used from roughly the mid-1960s through 1969, and it’s become shorthand for the amps collectors and players prize most for their raw, dynamic breakup at volume, including the 100-watt 1959 Super Lead and the 50-watt 1987. From 1969 the plexiglass gave way to metal panels, and in 1975 Marshall introduced master-volume models that made it easier to get distortion at lower volumes. Matching cabinets, such as the 1960A and 1960B 4x12s loaded with Celestion Greenback speakers, are part of the classic Marshall sound.\u003c\/p\u003e\n\n\u003ch3\u003eWhat drives value in a vintage Marshall\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOriginality\u003c\/strong\u003e — original transformers, panel, chassis, and speakers matter significantly. Many vintage Marshalls were modified over the years, and an unmodified, original amp is worth considerably more.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEra\u003c\/strong\u003e — JTM45 and Plexi-era amps command the highest prices, followed by the metal-panel and early master-volume amps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eService history\u003c\/strong\u003e — filter capacitor replacement and other maintenance are normal on an amp this old. A documented, professionally serviced example is generally a safer purchase.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuthenticity\u003c\/strong\u003e — the Plexi era is so collectible that replicas, reskinned amps, and parts-built amps exist, so confirming that the chassis, transformers, and panel match the stated year matters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead vs. cabinet pairing\u003c\/strong\u003e — heads and cabinets are often sold separately, so confirm that the impedance of a head matches any cabinet you pair it with.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow we inspect and test our amplifiers\u003c\/h3\u003e\n\u003cp class=\"my-0\"\u003eEvery amp in this collection is inspected and powered up in-house before listing. We check transformers, tubes, and components for originality, verify that the chassis and panel match the amp’s stated year, note service history when known, and photograph the chassis and key components so you know exactly what you’re buying.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003ch3\u003eWhat does “Plexi” mean, and why do these amps cost so much?\u003c\/h3\u003e\n\u003cp class=\"my-0\"\u003e“Plexi” refers to the clear plexiglass control panel Marshall used from roughly the mid-1960s through 1969. Plexi-era amps are prized for a dynamic, touch-responsive breakup at volume, and production from this short period was small compared with later Marshall output, so supply is limited.\u003c\/p\u003e\n\n\u003ch3\u003eDo vintage Marshalls run on U.S. voltage?\u003c\/h3\u003e\n\u003cp class=\"my-0\"\u003eMany vintage Marshalls were built for the British market and are set for 240 volts. Some have a selectable voltage tap and others have been converted, so always confirm an amp’s voltage before plugging it in. We note the voltage setup in the listing and can help you sort out the right way to run it.\u003c\/p\u003e\n\n\u003ch3\u003eShould I buy a vintage Marshall or a modern reissue?\u003c\/h3\u003e\n\u003cp class=\"my-0\"\u003eIt depends on your priorities. A genuine vintage amp carries collector value, historical significance, and the tone of vintage components, but it needs more care and maintenance. A modern reissue offers a similar circuit with more reliable, consistent parts and usually a lower price, which suits players who want the sound without the vintage-gear responsibilities.\u003c\/p\u003e\n\n\u003ch3\u003eDo you ship amplifiers, and how are they packed?\u003c\/h3\u003e\n\u003cp class=\"my-0\"\u003eYes, we ship amplifiers nationwide and internationally, with careful attention to packing given the weight of the amp and the fragility of the tubes and transformers. Every amp is insured in transit. Import duties and taxes for international orders are the buyer’s responsibility and vary by destination country.\u003c\/p\u003e\n\n\u003ch3\u003eCan I trade my current amp toward a vintage Marshall?\u003c\/h3\u003e\n\u003cp class=\"my-0\"\u003eYes, we accept trades toward amplifiers in our inventory, including full collections. Reach out with details and photos of your amp and we’ll provide a trade valuation.\u003c\/p\u003e","products":[{"product_id":"all-original-1966-marshall-jtm45-mkii-plexi-50w-head-serviced-kt66-power-tubes-original-tolex-pots-knobs-very-good-condition-at-maharsvintageguitars-com","title":"Marshall JTM45 MKII 1966 Plexi 50 Watt Head Serviced","description":"\u003cp\u003e\u003cstrong\u003eNo sales tax for US customers outside California.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 1966 Marshall JTM45 MKII Plexi 50-watt head is one of the most historically significant amplifiers ever built. This is the amp that defined British rock tone, the one Clapton, Townshend, and Page plugged into before the world knew what a Marshall even was.\u003c\/p\u003e\n\u003cp\u003eThe JTM45 began as Jim Marshall's interpretation of the 1959 Fender Bassman circuit, but the substitution of ECC83 preamp tubes and KT66 output valves gave it a character distinctly its own: thicker in the midrange, more compressed at the top end, with a harmonic richness that the original Bassman never quite achieved. By 1966, the final year of JTM45 production, Marshall had refined the design to what many consider its peak form — the transition to aluminum-faced Plexiglas panels was underway, and this amp sits right at that historically loaded moment. At 50 watts through a pair of KT66s, it has considerably more headroom than its name implies, but push it into breakup and you get that unmistakable bloom and sag that no modern amplifier has fully replicated.\u003c\/p\u003e\n\u003cp\u003eThis example presents in Very Good condition — cosmetically solid with original tolex, original knobs, handle, and pots intact. The amp has been professionally serviced, with filter caps replaced as part of that work, and it runs a grounded power cord for safe modern use. Tube complement currently installed includes a Mesa 5U4GB rectifier, a pair of Marshall-branded KT66 power tubes, and a mixed preamp set of Sylvania, unknown, and JJ ECC83\/12AX7 types.\u003c\/p\u003e\n\u003cp\u003eDating is confirmed through internal codes rather than a visible label — consistent with how Marshall documented production in this period. Transformer details are documented in the photographs. The cabinet measures 25.76\" wide by 9\" tall by 8.25\" deep and weighs in at 32 lbs 14 oz — compact by modern standards, substantial in hand. Extension speaker outputs are present. \u003c\/p\u003e\n\u003cp\u003eThis amp is built for the player or collector - roll back the volume and it delivers a warm, touch-sensitive clean that responds to pick attack in a way that modern circuits simply don't. Open it up and it does blues, rock, and everything in between with a directness and physicality that is deeply addictive. If you've been chasing this sound through pedals and modern clones, this is the source material.\u003c\/p\u003e\n\u003cp\u003eThe output transformer is replaced, a pretty common change on these older Marshalls.  The back panel is missing.  \u003c\/p\u003e\n\u003cp\u003eA genuine 1966 JTM45 MKII in this condition is not something that comes through often. These amps shaped the sound of rock music more than almost any other single piece of equipment, and the window to own one at anything resembling a reasonable price continues to narrow. If this is the amp you've been looking for, act accordingly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBrand: Marshall\u003cbr\u003eModel: JTM45 MKII Plexi 50-Watt Head\u003cbr\u003eYear: 1966\u003cbr\u003eDate Noted: Internal codes\u003cbr\u003eWatts: 50\u003cbr\u003eColor: Black\u003cbr\u003eDimensions: W 25.76\" x H 9\" x D 8.25\"\u003cbr\u003eWeight: 32 lbs 14 oz\u003cbr\u003eRectifier Tube: 5U4GB (Mesa)\u003cbr\u003ePower Tubes: 2 x KT66 (Marshall-branded)\u003cbr\u003ePreamp Tubes: 12AX7 (Sylvania), 12AX7 (?), ECC83 (JJ)\u003cbr\u003ePower Transformer: See photos\u003cbr\u003eChoke Transformer: See photos\u003cbr\u003eOutput Transformer: See photos\u003cbr\u003eFilter Caps: Replaced (serviced)\u003cbr\u003ePots\/Codes: Original\u003cbr\u003eTolex: Original\u003cbr\u003eKnobs: Original\u003cbr\u003eHandle: Original\u003cbr\u003ePower Cord: Grounded\u003cbr\u003eExtension Speaker Out: Yes\u003cbr\u003eReverb\/Effects: No\u003cbr\u003ePedal: No\u003cbr\u003eCase\/Cover: No\u003cbr\u003eCondition: Very Good\u003cbr\u003eServiced: Yes\u003c\/p\u003e\n\u003cp\u003eWe buy, sell, and take trades.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBe sure to check out the other cool guitar related stuff on our site!\u003c\/strong\u003e\u003cbr\u003eThe largest \u003ca href=\"https:\/\/www.maharsvintageguitars.com\/collections\/amps\" title=\"Vintage and used guitar amplifiers at Mahar's Vintage Guitars\"\u003e\u003cstrong\u003evintage \u0026amp; used guitar amplifier selection\u003c\/strong\u003e\u003c\/a\u003e in Northern California\u003cbr\u003e\u003ca href=\"https:\/\/www.maharsvintageguitars.com\/collections\/vintage-fender-guitars\" title=\"Vintage and used Fender guitars at Mahar's Vintage Guitars\"\u003e\u003cstrong\u003eFender electric guitars\u003c\/strong\u003e\u003c\/a\u003e - vintage \u0026amp; used\u003cbr\u003e\u003ca href=\"https:\/\/www.maharsvintageguitars.com\/collections\/gibson-guitars\" title=\"Vintage and used Gibson guitars at Mahar's Vintage Guitars\"\u003e\u003cstrong\u003eGibson electric guitars\u003c\/strong\u003e\u003c\/a\u003e - vintage \u0026amp; used\u003cbr\u003e\u003ca href=\"https:\/\/www.maharsvintageguitars.com\/collections\/effect-pedals\" title=\"Vintage and used effects pedals at Mahar's Vintage Guitars\"\u003e\u003cstrong\u003eVintage \u0026amp; Used Effects Pedals\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eShipping Policy\u003c\/b\u003e\u003cbr\u003eBy completing your purchase you are agreeing to \u003ca href=\"https:\/\/www.maharsvintageguitars.com\/policies\/shipping-policy\"\u003eour shipping policy\u003c\/a\u003e.\u003c\/p\u003e","brand":"Marshall","offers":[{"title":"Default Title","offer_id":56348666495142,"sku":"AMP-0948","price":9499.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0455\/7527\/4662\/files\/marshall-jtm45-mkii-1966-plexi-50-watt-head-serviced-7768583.jpg?v=1779625818"}],"url":"https:\/\/www.maharsvintageguitars.com\/collections\/vintage-marshall-amplifiers-for-sale.oembed","provider":"Mahar's Vintage Guitars","version":"1.0","type":"link"}