Marshalls JCM900 4100 Head from above
Marshalls JCM900 4100 head being carried to the stage
A zoomed in image of Marshalls JCM900 4100 Head
A zoomed in image of Marshalls JCM900 4100 Head
Marshalls JCm900 4100 Head from above
A zoomed in image of JCM900 4100 Head showing all the different knobs
A back facing zoomed in image of Marshalls JCM900 4100 Head
A back facing zoomed in image of Marshals JCM900 4100 Head

JCM900 4100 Vintage Reissue Head

Iconic 100W head built in the UK
Details

This two-channel dual spring reverb 100W powerhouse will make you stand out on stage. A stylish reissue, the JCM900 4100 is the natural evolution of the JCM800 adding another channel, two reverb options and two gain features to give you that extra boost.  

An amp built to go on the road and be on the stage with a sound loud enough to fill stadiums.

Designed and engineered in UK. Made in UK.

Features
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Built in our UK factory 

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All-valve 

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Switch from 100W to 50W at the flick of a switch 

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Two channels 

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FX loop

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Built-in reverb options 

HEAR THE JCM900 4100

Clean 1

Channel A - Master 7, Presence 5, Bass 9, Mid 4, Treble 5, Gain 5

Clean 2

Channel A - Master 7, Presence 7, Bass 8, Mid 5, Treble 7, Gain 6

Crunch 1

Channel B - Master 7, Presence 3, Bass 7, Mid 7, Treble 4, Gain 14

Crunch 2

Channel B - Master 7, Presence 4, Bass 7, Mid 8, Treble 6, Gain 16

Crunch 3

Channel B - Master 8, Presence 5, Bass 8, Mid 5, Treble 5, Gain 20

GENERAL
Model
JCM900 4100 VINTAGE REISSUE HEAD
Range
Vintage reissue
CHANNELS
2
TECHNOLOGY
Valve
ELECTRONICS
Output wattage
100W
OUTPUTS
2 X 1/4" JACK SPEAKER OUTPUTS, SELECTABLE 16Ω/ 8Ω / 4Ω LOAD
INPUTS
1 x 1/4" jack instrument input
controls
CHANNEL A GAIN, CHANNEL B LEAD GAIN, TREBLE, MIDDLE, BASS, PRESENCE, CHANNEL A (VOLUME, REVERB), CHANNEL B (VOLUME, REVERB)
Effects
SPRING REVERB
Effects loop
Yes, with level control
VALVES
Preamp valves
2 x ECC83, 1 x ECC83 (phase splitter)
Power amp valves
4 x 5881
PHYSICAL UNIT
Weight
18.8 kg / 41 LB
Width
740 mm / 29.1"
Height
310 mm / 12.2"
Depth
210 mm / 8.3"
Country of origin
Designed and engineered in UK. Made in UK.
INCLUDED IN THE BOX
Box Contents
PEDL-91004 included Detachable power cable included Speaker cable included
Support & more information

Colour

Black and Gold

A front facing image of Marshalls JCM900 4100

From

$ 2,449.99

From $ 2,449.99
A man is standing next to a Marshall JCM900 4100 Head.

POWER REDUCTION FROM 100W TO 50W AT THE FLICK OF A SWITCH

Tailor your power to suit your surroundings. The JCM900 is equipped with a simple switch to effortlessly choose between a 100W and 50W power output. Now you can play in the rehearsal room or the living room without any hassle.

Clean 1

Crunch 1

Crunch 2

A front facing image of Marshalls JCM900 4100 Head
Marshall JCM900 4100 Head in a studio

FX LOOP

The JCM900’s effects loop functions as a platform for pedals. With the JCM900, your distinctive sound will always shine through. 

A image of Marshalls JCM900 4100 highlighting the effects on the back

BUILT-IN REVERB OPTIONS

Step out of your comfort zone with built-in reverb controls. Experiment with your sound and unleash breathtaking solos that will leave a lasting impression. 

A zoomed in image of Marshalls JCM900 4100
Marshall JCM900 4100 head stacked on a Marshall Amp

BUILT IN OUR UK FACTORY

Originally released in January 1990, the JCM900 4100 boasted higher gain and lower noise coupled with the classic Marshall tone. Today, the JCM900 is part of our Vintage Reissue series. Skilfully crafted at our factory in Bletchley, England, the JCM900 effortlessly channels the Marshall spirit and is fashioned with the iconic touches you’ve come to expect from us. This all-valve amp is famous for its tone and roadworthiness, while still maintaining the original high gain and dual reverb functions. It’s a classic that’s become even more classic.

Learn more about our UK made ampsLearn more about our UK made ampsBUILT IN OUR UK FACTORY
Two men working in the Marshall factory
A zoomed in image of Marshalls JCM900 4100 Head

PRODUCT DETAILS

OUTPUT WATTAGE

100W with power reduction to 50W

CHANNELS

Two channels

ELECTRONICS

Effects loop with volume control

OUTPUTS

Two speaker outputs for connecting extension cabs

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