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Marshall ST20C 1x12 20w JTM Combo

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IN STOCK, Normally ships within 24 hours.

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Convenience has also been put at the forefront of the Studio JTM’s design, with a smaller footprint and being more lightweight than its historical counterpart without compromising on sound quality, the amp is a breeze to transport and is suitable for playing in multiple environments.

Ideal for both home use or smaller stages, the Studio JTM boasts built-in power reduction technology, allowing players to switch between 20W and 5W settings, meaning guitarists can now achieve the defining sound of the JTM anywhere.

The Studio JTM features many of the same components that helped define the iconic JTM tone, from the ECC83 preamp values, 5881 power amp valves, ECC83 phase splitter and G12M-65 Creamback Celestion speakers, resulting in a unique blend of warm, growling and versatile sound that takes you right back to the renaissance of rock and roll.



20W with power reduction to 5W


2 x ECC83, 1 x ECC83 (phase splitter) and 2 x 5881


Single channel with four separate inputsHigh treble and normal loudness controls


Treble, middle, bass andpresence

Speaker outputs

5 x 1/4” jack sockets(16Ω load / 8Ω load / 4Ωload)


DI output

Speaker config

1 x 12"

Speaker model

Celestion G12M-65 Creamback (16Ω, 65W)

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    Shipping Information

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    Musicstreet is a Family run independent guitar specialists.

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