Marshall

JMP 2203

1977 Master Model 100 Watt Lead

Fully Serviced

An excellent example of a first-generation Marshall JMP 2203 Master Model Lead from 1977, one of the earliest and most desirable versions of the amplifier that would go on to define rock guitar for decades to come.

Introduced in 1975, the 2203 revolutionised the Marshall lineup by introducing a true master volume design, allowing players to achieve rich valve overdrive without having to run the amplifier completely flat out. By 1977, the 2203 had become the choice of countless touring musicians thanks to its incredible punch, clarity and reliability.

Built during Marshall’s highly regarded late-‘70s period, this UK-made head delivers everything you’d expect from an original JMP—huge dynamic range, crushing midrange, tight low end and the unmistakable roar that has appeared on thousands of recordings.

Specifications

• Model: JMP 2203 Master Model Lead
• Year: 1977
• Serial Number: S/A 07681J
• Inspection Sticker Date: 31/10/1977
• Output: 100 Watts
• All original iron - Mains, Output & Choke
• Power Valves: 4 x EL34 - OEM Marshall
• Preamp Valves: 3 x ECC83 / 12AX7
• Channels: Single Channel
• Inputs: High & Low Sensitivity
• Controls: Pre-Amp Volume, Master Volume, Presence, Bass, Middle, Treble
• Impedance Selector: 4Ω / 8Ω / 16Ω
• Construction: UK-built PCB construction with flying leads

Service Work

• Fully inspected and serviced by Dave Wittering at Prestige Amp Servicing.
• Dave is a former Marshall Senior Service Engineer with over 15 years at the Marshall factory.
• V1 Grid Mod - to stop oscillation
• Bias circuit capacitors
• All pots replaced
• All sockets replaced
• Dedicated chassis earth
• Mains fuse holder replaced - NOS
• Mains & Ohms selectors serviced
• All parts used are OEM Marshall where possible
• Ready for immediate studio, rehearsal or stage use.

Tone

The late-’70s 2203 is one of the definitive Marshall amplifiers. It combines the authority and headroom of a 100-watt Super Lead with the added flexibility of a master volume circuit, creating an amplifier that can move effortlessly from articulate classic rock to aggressive hard rock and early heavy metal.

Expect tight, percussive bass response, aggressive upper mids and exceptional note definition. The amplifier remains incredibly responsive to picking dynamics and cleans up beautifully from the guitar’s volume control, while turning up the preamp delivers the rich harmonic overdrive that has made the 2203 legendary.

A boost pedal in front unlocks the saturated tones that became synonymous with the New Wave of British Heavy Metal, early thrash and countless arena rock recordings.

This is the unmistakable sound of a late-’70s Marshall at its absolute best.

Condition

Presented in very good vintage condition with honest cosmetic wear consistent with nearly 50 years of use. The amplifier retains plenty of original character and has clearly been enjoyed throughout its life.

A previous owner had fitted an aftermarket effects loop. This has since been professionally removed and the circuit restored to standard factory specification. The only evidence remaining is two neatly positioned holes in the rear panel where the loop controls were previously mounted. They have no effect on the amplifier’s performance or reliability and are reflected in the price.

Please study the photographs carefully as they form part of the description.

Worldwide Shipping

All of our amplifiers are shipped in custom Overdrive Guitars boxes with extensive internal protection. We regularly ship vintage Marshall amplifiers worldwide using UPS and DHL, with fully tracked and insured delivery. Valves are carefully packed and secured for transport.

We are proud to be an Authorised Marshall Retailer and Marshall specialists, with a dedicated showroom where you can experience and test our amplifiers in person by appointment.