
Marshall ST20C Radio
ST20C Radio
ST20C RADIO
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.

FEATURES
INFORMATION
BRAND
Marshall
PRODUCT TYPE
Speaker
OUTPUT WATTAGE
20W (with power reduction option to 5W)
MODEL
SC20C
RANGE
Studio
CONTROLS
- Treble
- Middle
- Bass
- Presence
OUTPUTS
DI output and 5 x 1/4” speaker outputs (16Ω load / 8Ω load / 4Ω load)
TECHNOLOGY
Valve
CHANNELS
1 with 2 voicings
INPUTS
4 x 1/4" jack instrument inputs (high/low sensitivity)
CABLE
Detachable power cable included
SPEAKER CONFIGURATION
1x12”
SPEAKER MODEL
Celestion G12M-65 Creamback (16Ω, 65W)
PREAMP VALVES
2 x ECC83, 1 x ECC83 (phase splitter)
UNIT IMPEDANCE
16Ω
WEIGHT
17.8kg (39.2lbs)
POWER AMP VALVES
2 x 5881
HEAR THE ST20C
-Clean 1 : Presence 7, Bass 5, Mid 6, Treble 7, High Treble 3, Normal 1 (Singlecoil strat)
-Crunch 1 : Presence 7, Bass 2, Mid 6, Treble 7, High Treble 8, Normal 1 (HSS strat style)
-Crunch 2 : Presence 7, Bass 2, Mid 6, Treble 7, High Treble 8, Normal 1 (Les Paul)
POWER HANDLING
65W
EFFECTS
None
EFFECTS LOOP
Yes, send(return)
