The Marshall 1971 50W Lead Head, JMP Era, with Flight Case rests on a speaker cabinet, showcasing its iconic British sound through its controls. Marshall guitars are displayed in the background.
A Marshall 1971 50W Lead Head, JMP Era, with control knobs and input/output ports sits atop a matching cab in a music store, capturing classic British grind. Includes flight case.
Top-down view of a Marshall 1971 50W Lead Head, JMP Era amp chassis with transformers, vacuum tubes, capacitors, sockets, and labeled components on a metal plate—captures classic British Grind. Includes flight case.
The 1971 Marshall 50W Lead Head, JMP era, includes a flight case; this iconic British amp is famed for its vintage tone and classic Marshall sound.
Front view of a Marshall 1971 50W Lead Head JMP Era amp, featuring exposed vacuum tubes and worn left label, includes flight case—ideal for classic British Grind tones.
A 1971 Marshall 50W Lead Head guitar amp, JMP era by Marshall, featuring blue capacitors, vacuum tubes, and a brass-finish chassis—delivering classic British tones. Includes flight case.
Internal view of a 1971 Marshall 50W Lead Head (JMP Era), showing resistors, capacitors, wires, and tubes on the metal chassis—a classic Marshall amp famed for its British sound. Includes flight case.
Close-up of an electronic circuit board with resistors, capacitors, and wires inside a metal enclosure, evoking the classic British grind of the Marshall 1971 50W Lead Head JMP Era guitar amp. Comes with flight case.
Interior view of a 1971 Marshall 50W Lead Head (JMP Era) showing its classic circuit board, wiring, and jacks inside a metal chassis—a true Marshall design for authentic British tone; includes flight case.
The image displays the internal wiring and components, such as resistors and capacitors, inside a Marshall 1971 50W Lead Head JMP Era amp, complete with flight case, known for its classic British Grind.
Close-up of two metal-cased transformers with serial numbers, mounted on a chassis—part of a 1971 Marshall 50W Lead Head (JMP Era) from Marshall—shown against a textured gray background.
Close-up of a worn label with handwritten notes and "14/6/66" test date, evoking classic British Grind. Reminiscent of the legendary tone of the Marshall 1971 50W Lead Head, JMP Era, includes flight case.
Close-up of a smartphone screen showing a magnified electronic component—reminiscent of those in a 1971 Marshall 50W Lead Head, JMP Era, by Marshall—set beside textured fabric, evoking classic British guitar amp style.
A close-up of a digital screen shows a blurry image of a white object labeled "25 OHM," reminiscent of markings inside a vintage Marshall 1971 50W Lead Head JMP Era amp, complete with flight case.
The Marshall 1971 50W Lead Head, JMP Era, with Flight Case rests on a speaker cabinet, showcasing its iconic British sound through its controls. Marshall guitars are displayed in the background.
A Marshall 1971 50W Lead Head, JMP Era, with control knobs and input/output ports sits atop a matching cab in a music store, capturing classic British grind. Includes flight case.
Top-down view of a Marshall 1971 50W Lead Head, JMP Era amp chassis with transformers, vacuum tubes, capacitors, sockets, and labeled components on a metal plate—captures classic British Grind. Includes flight case.
The 1971 Marshall 50W Lead Head, JMP era, includes a flight case; this iconic British amp is famed for its vintage tone and classic Marshall sound.
Front view of a Marshall 1971 50W Lead Head JMP Era amp, featuring exposed vacuum tubes and worn left label, includes flight case—ideal for classic British Grind tones.
A 1971 Marshall 50W Lead Head guitar amp, JMP era by Marshall, featuring blue capacitors, vacuum tubes, and a brass-finish chassis—delivering classic British tones. Includes flight case.
Internal view of a 1971 Marshall 50W Lead Head (JMP Era), showing resistors, capacitors, wires, and tubes on the metal chassis—a classic Marshall amp famed for its British sound. Includes flight case.
Close-up of an electronic circuit board with resistors, capacitors, and wires inside a metal enclosure, evoking the classic British grind of the Marshall 1971 50W Lead Head JMP Era guitar amp. Comes with flight case.
Interior view of a 1971 Marshall 50W Lead Head (JMP Era) showing its classic circuit board, wiring, and jacks inside a metal chassis—a true Marshall design for authentic British tone; includes flight case.
The image displays the internal wiring and components, such as resistors and capacitors, inside a Marshall 1971 50W Lead Head JMP Era amp, complete with flight case, known for its classic British Grind.
Close-up of two metal-cased transformers with serial numbers, mounted on a chassis—part of a 1971 Marshall 50W Lead Head (JMP Era) from Marshall—shown against a textured gray background.
Close-up of a worn label with handwritten notes and "14/6/66" test date, evoking classic British Grind. Reminiscent of the legendary tone of the Marshall 1971 50W Lead Head, JMP Era, includes flight case.
Close-up of a smartphone screen showing a magnified electronic component—reminiscent of those in a 1971 Marshall 50W Lead Head, JMP Era, by Marshall—set beside textured fabric, evoking classic British guitar amp style.
A close-up of a digital screen shows a blurry image of a white object labeled "25 OHM," reminiscent of markings inside a vintage Marshall 1971 50W Lead Head JMP Era amp, complete with flight case.

1971 Marshall 50W Lead Head, JMP Era, Includes Flight Case

$4,499.00

1 item left

The Sound of Rock History—Vault-Protected & USA-Bound

Most guitarists spend a lifetime chasing the "British Grind" heard on the greatest records of the 70s. But finding a vintage '71 JMP in this condition is rare—and finding one you can trust to a shipping carrier is even rarer.

This 1971 Marshall JMP 50W Lead comes paired with a heavy-duty professional flight case, meaning "shipping anxiety" is officially canceled. We’ve armored this legend so it arrives at your door exactly as it left ours: ready to roar.

Why the 50W JMP is the "Sweet Spot"

  • Armored for the Road: The included pro-grade flight case is the ultimate insurance policy. Whether it's going across the state or across the country, your investment stays showroom-clean.

  • Touch-Sensitive Response: Hand-wired turret board construction makes this amp feel like an extension of your fingers. It’s immediate, punchy, and incredibly responsive to your pick attack.

  • The "Slippery" Cleanup: Roll your guitar’s volume back and the aggressive mids transform into a bold, chimey rhythm tone that breathes.

  • Power Without the Pain: You get the singing power-tube saturation of a vintage Plexi circuit without the back-breaking weight or the "stadium-only" volume of a 100-watt head.

Condition & Provenance

This 1971 specimen has survived the decades in remarkable shape. While it shows the very light "honest play wear" you’d expect from a 50-year-old icon, it remains clean, authoritative, and ready for the tracking room.

Shipping Note: We offer Secure Shipping within the USA only. Thanks to the included flight case, your Marshall is protected by a literal suit of armor from our door to yours.

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CALIFORNIA PROPOSITION 65 WARNING

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

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