{"product_id":"marshall-jcm-800-lead-series-model-2203-100-watt-master-volume-head-1982-black","title":"Marshall JCM 800 Lead Series Model 2203 100-Watt Master Volume Head 1982 - Black","description":"\u003cp\u003e\u003cstrong\u003eMarshall\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eJCM800 2203 100W Lead – 1982\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA superb \u003cstrong\u003e1982 Marshall JCM800 2203 100-watt Master Model Lead\u003c\/strong\u003e, dating from the early years of the JCM800 era and presented in very good condition.\u003c\/p\u003e\n\u003cp\u003eThe 2203 needs little introduction. Originally developed during the JMP period, the circuit carried over into the new JCM800 range at the beginning of the 1980s and went on to become one of the most recognisable and influential Marshall amplifiers ever produced.\u003c\/p\u003e\n\u003cp\u003eThis example carries serial number \u003cstrong\u003eS\/A 04415P\u003c\/strong\u003e, with the P suffix denoting 1982 production. The original internal inspection sticker is also present and appears to be dated \u003cstrong\u003e20\/4\/82\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe amp presents extremely well internally, with a particularly clean PCB and wiring. It retains its classic early JCM800 cosmetics, including the vertical-input layout, black covering, gold control panel and large Marshall script logo.\u003c\/p\u003e\n\u003cp\u003eTonally, this is exactly what a good 2203 should be: tight, immediate and extremely responsive, with a huge amount of punch and that unmistakable aggressive Marshall upper-midrange.\u003c\/p\u003e\n\u003cp\u003eAt lower Preamp settings there is considerably more clarity and headroom than the JCM800's reputation might suggest. Turn the Preamp up and it moves progressively into the thick, harmonically rich crunch for which the 2203 became famous. Add a boost in front and there is more than enough aggression available for classic hard rock and metal.\u003c\/p\u003e\n\u003cp\u003eWith \u003cstrong\u003e100 watts and four EL34s\u003c\/strong\u003e, there is also a sense of weight and authority that the smaller Marshalls simply do not quite reproduce.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOriginal Marshall Valves\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe amplifier is fitted with a quartet of Marshall-branded EL34 output valves, while the preamp contains two Marshall-branded and one MAZDA ECC83s. The output valves have been retained following testing during the amplifier's recent inspection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRecently Professionally Serviced\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe amplifier has recently undergone a full professional inspection, service and test. During the inspection, the potentiometers were found to be smooth and noise-free, while intermittent valve sockets and an incorrect screen resistor were identified.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe following work was carried out:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAll input and output sockets replaced\u003c\/li\u003e\n\u003cli\u003eIncorrect V6 screen resistor replaced with a vintage NOS 1K 5W resistor\u003c\/li\u003e\n\u003cli\u003eExisting valves tested\u003c\/li\u003e\n\u003cli\u003eFull operational check and testing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe work was completed in September 2026 and the amplifier is now fully operational and ready to use.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecification:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eModel: Marshall JCM800 2203\u003c\/li\u003e\n\u003cli\u003eYear: 1982\u003c\/li\u003e\n\u003cli\u003eSerial Number: S\/A 04415P\u003c\/li\u003e\n\u003cli\u003eInspection Date: 20 April 1982\u003c\/li\u003e\n\u003cli\u003ePower: 100 watts\u003c\/li\u003e\n\u003cli\u003eCircuit: Master Model Lead\u003c\/li\u003e\n\u003cli\u003eInputs: Vertical High \u0026amp; Low sensitivity\u003c\/li\u003e\n\u003cli\u003ePower Valves: 4× vintage Marshall-branded EL34\u003c\/li\u003e\n\u003cli\u003ePreamp Valves: 3× vintage ECC83\u003c\/li\u003e\n\u003cli\u003eRecently professionally serviced\u003c\/li\u003e\n\u003cli\u003eVintage NOS screen resistor fitted\u003c\/li\u003e\n\u003cli\u003eFully checked, tested and ready to use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe early vertical-input JCM800 2203 is one of the definitive Marshall amplifiers. There is very little between the guitar and the speaker — just an incredibly effective circuit with huge dynamics, punch and attitude.\u003c\/p\u003e\n\u003cp\u003eWith its 1982 date, vintage Marshall valve complement and recent professional service, this is a particularly appealing example that is ready to be played rather than simply collected.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWorldwide shipping available.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe amplifier will be carefully prepared and securely packed using purpose-made Overdrive Guitars packaging, with the valves protected for transit and shipment fully tracked and insured. Collection and demonstration are also available from our West London showroom.\u003c\/p\u003e","brand":"Marshall","offers":[{"title":"Default Title","offer_id":53681956487504,"sku":null,"price":2499.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0944\/0919\/5856\/files\/0a84e542e36bc104.jpg?v=1790105329","url":"https:\/\/overdriveguitars.com\/products\/marshall-jcm-800-lead-series-model-2203-100-watt-master-volume-head-1982-black","provider":"Overdrive Guitars","version":"1.0","type":"link"}