1971 Marshall JMP 50 watt Small Box

1971 Marshall JMP 50 watt Small Box

Marshall |  1971JMP50w

Classic small box JMP 50 in excellent condition and all the crunch you expect from this brilliant point to point hand wired 1971 Marshall. One of the last ones like it too...

Sorry, this item was sold out.

A very nice condition and surprisingly original 1971 ‘small box’ JMP50 Marshall head.

This has been owned for a very long time by a fairly local, session guitar player who used it on a fair few decent recordings. He recently retired and we bought this from him along with the 1964 Bigsby ES-335 we currently have listed.

We do not confess to being Marshall experts and we do not sell many amps at all but we liked the way this one looked and it does happen to sound rather nice to boot! Have a look at the pictures, I think you will find all the important bits are there and nothing that affects the tone has been changed. We have provided internal pics as well and as you can see there is a lot of red dye still present on the PCB.

Classic sound with classic crunch in a classic small box format. Whats not to like…?

If you have any questions about the item, feel free to contact us using the form below. All fields are required.

Make a reasonable offer and we’ll consider it. All feilds are required and offer should be in £GBP Sterling. If you need a currency converter try this link.

At a glance

Model: JMP 50 watts
Year: 1971
Finish: Correct Black Tolex

Technology: tube
RMS power: 50




We are located in Cheltenham, the capital of the Cotswolds, UK. All items are in stock and can be viewed and tried out through a variety of vintage amplifiers, by appointment only, at our brand new lounge/showroom. We despatch virtually anywhere in the world and we have enormous experience in hassle-free, safe shipping.

ATB Guitars (By appointment Only) 15 Regent St, Cheltenham, GL50 1HE United Kingdomn

Landline: 01242 697607‬

Mobile: 07842 001007

Overseas: +44 (0)1242 697607

Cheltenham, Gloucestershire UK