Marshall JMP 1986 2-Channel 50-Watt Valve Amplifier Head Vintage 1970 Pre-Owned

Up for sale is a true piece of rock history: a now rare 1970 Marshall JMP 1986 2-channel 50-watt valve amplifier head. This is one of those amps that instantly delivers the iconic British tone—warm, punchy cleans and rich, dynamic overdrive when pushed.

Despite its age, this amp is in very good condition and is fully ready to be played and enjoyed. It has been well maintained over the years.

If you know these early JMP heads, you already know what to expect—big, open vintage tone with incredible responsiveness. Whether you're chasing classic rock crunch or articulate cleans, this amp delivers in spades.

This head also comes with an Australian made custom flight case by C&C Cases in Melbourne to keep it in immaculate condition for another 50 years to come!

Condition

• Very good overall condition for a 1970 unit
• Minor cosmetic wear and patina consistent with age
• One switch tip missing
• Two backplate screws missing
• Presents extremely well and functions as it should

Specifications

• 50-Watt valve amplifier head
• 1970 model
• 2-channel design
• 2 × EL34 power tubes
• 3 × 12AX7 preamp tubes
• 3-band EQ (Bass, Middle, Treble)
• Presence control

 Servicing & Modifications

• Power transformer replaced
• Choke replaced
• Filter capacitors replaced
• Select resistors, diodes, and capacitors replaced

All work has been done to maintain reliability while preserving the amp’s vintage tone and integrity.

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A killer vintage Marshall that looks the part and absolutely roars. Perfect for players, collectors, or anyone wanting authentic early ‘70s tube tone!

Feel free to reach out with any questions or to arrange a demo.