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1973 Marshall JMP MKII 50 watt head

1973 Marshall JMP MKII 50 watt head

$799.00 Price Tier: Standard

5.0 (1)

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Page last updated Jul 01, 2026

Pricing and availability

We compare 600+ stores and found this item at 1 store. Prices updated July 1, 2026.

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5.0 (7)

$799.00 27 available Used

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Average Price: $799

Standard/Professional

$300

$801+

Price Tier

In the Guitar Amplifier Heads category, 1973 Marshall JMP MKII 50 watt head is priced in the upper end of the Standard/Professional range. This is quality gear at a fair price point, suitable for beginners, hobbyists, and pros alike.

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Description

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The 1973 Marshall JMP MKII 50 watt head is a legendary piece in the world of guitar amplifiers, known for its rich, dynamic sound and timeless design. This iconic amp head has been a staple for rock and blues musicians since its release, valued for its ability to deliver a warm, punchy tone with an unmistakable vintage character. Whether you're playing in a stadium or jamming in a studio, the JMP MKII offers a versatile sound palette that can go from mellow cleans to aggressive leads, making it a favorite among guitarists who cherish authenticity and tone.

This amp head features classic EL34 power tubes, which are renowned for their ability to produce powerful, articulate sound with excellent sustain. The JMP MKII also includes a straightforward control layout, making it easy for musicians to dial in their desired tone without a steep learning curve. The amp’s robust construction ensures durability, while its straightforward design embodies the raw, unfiltered power that Marshall is famous for.

Key Features:

50-watt all-tube head with classic EL34 power tubes
Simple and intuitive control layout for easy tone shaping
Dual channel design for versatile sound options
Legendary Marshall craftsmanship and vintage aesthetics
Suitable for both live performance and studio recording
Known for its ability to produce a wide range of tones from clean to overdriven

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Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about 1973 Marshall JMP MKII 50 watt head.

Features and functionality

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The amp is extremely loud and bright, with no master volume, making it challenging to use at low volumes without attenuation.
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Mods and upgrades

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Installing a master volume using a speaker out is a common mod, allowing for easier volume control without altering the amp's original state permanently.
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A Jose Arredondo style mod may be present, indicated by a pot on the input, altering volume blending without a patch cable.
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Post phase inverter master controls are suggested for easier volume management and tonal adjustments without permanent changes.
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Use cases and applications

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Known for cutting through mixes in a band setting, the amp delivers classic Marshall tones when power amp tubes overdrive, ideal for loud rock environments.
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User experience

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Owners note that the EQ section is subtle, and the amp is highly responsive to guitar knob adjustments, offering a range of tonal possibilities without getting muddy.
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Owners report that pairing the amp with a Marshall 2x12 or 1960 4x12 cab provides optimal sound, though it is not ideal for metal.
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Comparisons

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Compared to Fender and Vox amps, this Marshall model offers a distinct, bright sound that can be tailored with pedals, making it versatile beyond its classic rock reputation.
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WGS Invader 50 and ET65 speakers are U.S. made alternatives to Greenback and Creamback, noted for their tonal depth.
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Harley Benton Vintage 2x12 cabs loaded with Celestion V30s offer a budget-friendly yet high-quality speaker option.
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Artist usage

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Godfrey Townsend

Guitarist

A Walk Down Abbey Road

Verified via Photo

His first Marshall was a 50 watt head that he bought from Joe Fuoco in 1973. He didn't have a speaker cabinet at the time so Charlie Gozzer (who played bass in his band) gave him a loan of his Traynor 2 x 15 cabinet.

Genre Usage

Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.

Rock

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