ST20C

The first JTM amp created a legendary sound that inspired generations of musicians. In honour of that, the ST20C brings the iconic 60’s tone that initially launched Marshall to the present day, in a more compact format.

Whether you’re at home, in the studio, or on the big stage – the ST20C can adapt to bring exceptional tone to any situation with built-in power reduction technology, enabling players to switch between 20W and 5W.

Hear the ST20C

Clean 1
Clean 1 Presence 7, Bass 5, Mid 6, Treble 7, High Treble 3, Normal 1 (Singlecoil strat)
Crunch 1
Crunch 1 Presence 7, Bass 2, Mid 6, Treble 7, High Treble 8, Normal 1 (HSS strat style)
Crunch 2
Crunch 2 Presence 7, Bass 2, Mid 6, Treble 7, High Treble 8, Normal 1 (Les Paul)

Technical specification

General
Model
ST20C
Range
Studio
Technology
Valve
Channels
1 with 2 voicings
Electronics
Output wattage
20W (with power reduction option to 5W)
Outputs
DI output and 5 x 1/4” speaker outputs (16Ω load / 8Ω load / 4Ω load)
Inputs
4 x 1/4" jack instrument inputs (high/low sensitivity)
Controls
Treble, Middle, Bass and Presence
Effects
None
Effects loop
Yes, send/return
Speakers
Speaker configuration
1x12”
Power handling
65W
Speaker model
Celestion G12M-65 Creamback (16Ω, 65W)
Unit impedance
16Ω
Valves
Preamp valves
2 x ECC83, 1 x ECC83 (phase splitter)
Power amp valves
2 x 5881
Accessories
Cable
Detachable power cable included
Dimensions (including feet and handle)
Weight
17.8kg / 39.2lbs
Width
500mm / 19.7"
Height
460mm / 18.1"
Depth
265mm / 10.4"