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Studio JTM Head

Compact 20W head built in the UK
Details

Built in the UK and inspired by our first ever amp, the Studio JTM Head can create any tone from smooth to crunchy. If you’re looking for something unique, blend the two voices together and create your own sound.  

Swap between 20W and 5W with ease without having to compromise on tone.

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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20W to 5W at the flick of a switch 

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Same smooth tones as the original JTM45 

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FX loop and DI out 

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Two voices

HEAR THE ST20H

Clean 1

Crunch 1

Crunch 2

GENERAL
Model
ST20H
Range
Studio
CHANNELS
2, BRIDGEABLE
TECHNOLOGY
Valve
ELECTRONICS
Output wattage
20W (with power reduction option to 5W)
OUTPUTS
SPEAKER OUTPUTS: 5 X 1/4" JACK SOCKETS (16Ω LOAD / 8Ω LOAD / 4Ω LOAD), DI (1/4" JACK)
INPUTS
4 X 1/4" JACK INSTRUMENT INPUTS (HIGH/LOW SENSITIVITY)
controls
NORMAL/LOUDNESS II, HIGH TREBLE/LOUDNESS I, TREBLE, MIDDLE, BASS, PRESENCE
Effects
None
Effects loop
YES, 1 X SERIES SWITCHABLE
VALVES
Preamp valves
2 x ECC83, 1 x ECC83 (phase splitter)
Power amp valves
2 x 5881
PHYSICAL UNIT
Weight
9.25 kg / 20.4 LB
Width
500 mm / 19.7"
Height
240 mm / 9.4"
Depth
230 mm / 9.1"
Country of origin
Designed and engineered in UK. Made in UK.
INCLUDED IN THE BOX
Box Contents
Detachable power cable included Speaker cable included
Support & more information

Colour

Black

Marshall ST20H in black

$ 1,349.99

Regular Price: $ 1,349.99

Free Delivery

1-3 Business Days

Returns, warranty & payment

Marshall ST20H with red curtain and scratch marks

ERA-DEFINING SOUND

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ERA-DEFINING SOUND

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Power reduction from 20W to 5W at the flick of a switch

This amplifier provides you with the versatility to tailor your power output to suit your environment. Effortlessly select between 20W and 5W power output to seamlessly transition from the rehearsal room to the communal space and back again, without compromising on tone.

Clean 1

Crunch 1

Crunch 2

Front image of retro style Studio JTM Head without background.

Inspired by the original JTM45

Reproducing the legendary, warm and smooth tones of the original JTM45, the Studio JTM range looks as good as it sounds. Let the all-valve, era-defining sound of the JTM steal the show, whether playing at home or on stage.

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Studio JTM Head amplifier from Marshall.
The Marshall Studio JTM Head highlighted from an old photo.

All-valve

This instantly recognisable tone is driven by two ECC83 preamp valves, two 5881 power amp valves and one ECC83 phase splitter.

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BUILT IN OUR UK FACTORY

Meticulously crafted in our Bletchley, England, factory the Studio JTM features classic Marshall touches such as a robust metal 'coffin' logo with golden piping and beading that pays homage to the 1960s. After extensive years of development, the Studio JTM delivers the timeless and velvety tones reminiscent of the original JTM.  

Learn more about our UK made amps
A black and white photo of men working in a Marshall's factory.

PRODUCT DETAILS

OUTPUT WATTAGE

20W with power reduction to 5W

CHANNELS

Single channel with two voices

ELECTRONICS

Effects loop

INPUTS

4 x 1/4" jack inputs

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