Marshall 1959 Modified 'Plexi' Guitar Amp Head

Introducing the Marshall 1959 Modified, a modern take on the legendary Marshall 1959 ‘Plexi’ amp. This reimagined classic retains the raw, iconic sound that defined rock history, now with additional features for today's players. The new modifications include a master volume control, allowing for that signature high- gain crunch at any volume—perfect for home, studio, or stage. A switchable bright cap which offers tonal flexibility allowing you to access anything from a sharp vintage brightness to a warm, rounded tone, while the additional gain boost switch provides two levels of overdrive: classic rock grit or a modern, aggressive crunch.

The Marshall 1959 Modified combines timeless tone with modern versatility, making it the ultimate amp for capturing classic sounds – made famous by rock legends or forging your own.

Features:

Master volume control lets you enjoy this amp’s renowned high-gain crunch at any volume level – ideal for home, studio, or stage
A switchable bright cap for refined tonal control, allowing you to fine-tune the high frequencies for either a sharp, vintage brightness that cuts through the mix or a smoother, warmer tone
The gain boost enables you to switch to classic breakup or engage a higher-gain mode for aggressive tones with two overdrive modes

Inspired by guitarists, created by Marshall
The modified amp culture, driven by dedicated musicians and gear enthusiasts, has inspired us to reimagine the iconic 1959 model with new features that stay true to its legendary tone while expanding its versatility for modern players.

Faithfully replicating everything you love about the 1959
Feel the authentic sounds of the ‘Plexi’ that resonated with the likes of Jimi Hendrix, Cream, and The Who. Using the 1959’s newfound flexibility, carve out new creative possibilities and tailor your tones to perfection.

Added features
The new master volume control lets you achieve high-gain crunch at any volume, while a switchable bright cap provides tonal flexibility. With two overdrive modes, it blends classic sound with versatility, making it ideal for today’s guitarist.

Longstanding commitment to craftsmanship
Each 1959 Modified is crafted with precision at our Bletchley, England factory, to uphold the legacy of the original amp while adding its new, modern features.

Specifications
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

UNIT DIMENSIONS
WEIGHT (KG): 21 kg / 46.3 lbs
WIDTH (MM): 741 mm / 29.2“
HEIGHT (MM): 294 mm / 11.6“
DEPTH (MM): 210 mm / 8.7”

CONTROLS
Controls: Treble, middle, bass, and presence

• Master volume control for high-gain crunch at any level,
• Switchable bright cap offers vintage brightness,
• Gain boost switch enables classic or modern overdrive,
• Crafted with precision at Bletchley, England factory,
• Two channels with shared EQ for versatile sound,
• Valve technology delivers authentic 'Plexi' tones,
• 100W output with selectable speaker load options,
• Renowned tone inspired by rock legends like Hendrix.