Marshall SC20H


The Marshall SC20H guitar amp head delivers fierce, classic Marshall tone in a compact, versatile package.



The Marshall SC20H guitar amp head is a compact, yet powerful amplifier designed for guitar players who demand quality sound and versatility. This amp head features an all-tube design that delivers classic Marshall tones, making it perfect for a wide range of musical styles.

One of the standout features of the SC20H is its switchable power output. With the ability to switch between 20 watts and 5 watts, this amp head can be used in a variety of settings without sacrificing tone or volume. Whether playing at home, in the studio, or on stage, the SC20H is versatile enough to handle any situation.

The SC20H also features a two-channel design, with a clean channel and an overdrive channel. The clean channel delivers classic Marshall clean tones, while the overdrive channel offers a range of distortion sounds from mild to full-on crunch. The amp head also includes a master volume control, allowing players to dial in just the right amount of volume without losing clarity or tone.

In terms of construction, the SC20H is built to last. Its compact design makes it easy to transport, while its sturdy metal construction ensures that it can withstand the rigors of life on the road. The amp head also includes a high-quality speaker output that can be used to connect to an external cab for even more power and flexibility.

Overall, the Marshall SC20H guitar amp head is an excellent choice for guitar players who demand quality sound and versatility. Whether you’re a professional musician or just starting out, this amp head delivers the classic Marshall tone you’ve come to expect in a compact and portable package.

Marshall SC20H properties

Product name SC20H
Brand Marshall
Type Guitar Amplifier Heads
Sound Effects Presence
Sound Setting Bass, Master-volume, Middle, Treble, Volume
Features Tuner for Instrument
Connection Inputs Tele/TRS 6.3mm/1/4″
Tele/TRS 6.3mm/1/4″ 2
Connection Outputs Direct Out Tele/TRS 6.3mm/1/4″, Speaker Connections Tele/TRS 6.3mm/1/4″
Speaker Connections Outputs 5
Direct Out Output 1
Return/Send Tele/RTS 6,3mm
Power Output (RMS) 20.0 W
Amplifier Model Tube
Guitar Amplifier Design Portable
Colour Black
Power Supply Electrical
Impedance 16, 4, 8
Height 240.0 mm
Depth 240.0 mm
Width 510.0 mm
Weight 9.4 kg

Additional information


Product type

Sound Effects

Sound Setting

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Connection Inputs

Tele/TRS 6.3mm/1/4"

Connection Outputs


Speaker Connections Outputs

Direct Out Output



Power Output-RMS

Amplifier Model

Guitar Amplifier Design


Power Supply


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Frequently Asked Questions:

How does the custom- voiced preamp section of the Marshall SC20H differ from previous Marshall designs?

The custom-voiced preamp section in the Marshall SC20H sets itself apart from previous Marshall designs through its use of proprietary gain and tone circuitry. This technology delivers a dynamic, high-gain response with enhanced clarity and sustain, allowing for greater tonal versatility and expression than previous Marshall amplifiers. Additionally, the preamp section features an innovative feedback control that enables players to fine-tune the amount of natural resonance in their sound, resulting in a more responsive and interactive playing experience. Overall, these enhancements in the SC20H's custom-voiced preamp section make it a powerful tool for guitarists seeking new and exciting tonal possibilities.