Marshall JCM800 Modified Valve Guitar Amp Head

The original, modified! Inspired by guitarists, created by Marshall.

The JCM800 Modified’s design is a celebration of musicians and gear enthusiasts who customise their amps. We’ve revamped the iconic JCM800 with modern features that help you carve out powerful tones.

Faithfully replicating everything you love about the JCM800

The Marshall JCM800 Modified pays homage to one of the most iconic amps in history, capturing everything guitarists loved about the original JCM800. With enhanced versatility, you have the tools to shape its legendary tone.

Added features

The gain boost switch provides extra gain and tonal flexibility for seamless transitions, while the mid-boost switch enhances mid-range frequencies, adding depth and clarity. The tight switch sharpens your tone by cutting low frequencies, ensuring every note rings out with clarity.

Longstanding commitment to craftsmanship

Skillfully crafted in our Bletchley, England factory, this amp captures the essence of Marshall’s storied legacy while integrating modern features tailored to push sonic boundaries.

GENERAL

CHANNELS
Two (with shared EQ controls) 
TECHNOLOGY
Valve

ELECTRONICS

Output wattage
100W

OUTPUTS

SPEAKER OUTPUTS: 2 x 1/4” jack speaker outputs, selectable 16Ω / 8Ω / 4Ω load
VALVES
Preamp valves
2 x ECC83, 1 x ECC83 (phase splitter), and 4 x EL34