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Marshall 1959 Modified Guitar Amplifier Head 100W

The Marshall 1959 Modified Head preserves the unmistakable sound of the 1959 Plexi amp that defined classic rock. Featuring updated controls, switchable bright cap, & 2 overdrive modes

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    Marshall 1959 Modified Guitar Amplifier Head

    The Marshall 1959 “Plexi” didn't just define classic rock — it practically invented the rulebook. Jimi Hendrix used one. Cream used one. The Who used one. And then they cranked it up.

    The Marshall 1959 Modified takes that same distinctive DNA and sneaks in a few modern upgrades that the legends of the '60s would've killed for. This isn't a reinvention — it's the original, with better manners and a broader vocabulary. Built for players who want yesterday's tone and today's control, the 1959 Modified is the most versatile version of a true rock icon.

    Marshall 1959 Legendary Tone, Finally TamedMarshall 1959 Legendary Tone, Finally Tamed

    Legendary Tone, Finally Tamed

    The original 1959 was glorious but uncompromising — you had to dime it to really hear what it could do. The 1959 Modified fixes that without touching what made it great. A new master volume control lets you coax those legendary, harmonically rich tones out of the amp at volumes that won't get you evicted or fired from the studio session.

    • Master Volume Control: Dial in the amp's signature high-gain crunch without blowing the roof off — perfect for home practice, studio recording, and live gigs where the sound engineer still likes you.
    • 100-Watt All-Valve Power Stage: Driven by EL34 valves, the same configuration that put the "Marshall growl" on every great rock record from 1965 onward — still here, still enormous.
    • Hand-Built in Bletchley, England: Every unit is meticulously assembled at Marshall's UK factory, because some things are still worth doing by hand.

    Two Kinds of Dirt, Infinite Possibilities

    If the original 1959 was a one-trick pony, it was the greatest one-trick pony in history. But today's players need range — from the warm, blooming breakup of a blues solo to the grinding, saturated aggression of modern metal. The gain boost switch on the 1959 Modified gives you both without compromise, opening the amp up to styles its predecessors never knew existed.

    • Gain Boost Switch: Toggles between a classic, harmonically rich break-up for blues and rock, and a higher-gain overdrive mode capable of carving out dense, aggressive tones for modern rock and metal.
    • Switchable Bright Cap: Flick it on for vintage brightness that cuts through the densest mix; leave it off for a rounder, warmer voice that sits beautifully in bluesy or smoother styles.
    • Dual Channel Inputs with Impedance Options: The traditional High and Low sensitivity inputs remain intact, giving players the classic interaction between guitar, cable, and amp that defined the original's dynamic feel.
    Marshall 1959 Two Kinds of Dirt, Infinite PossibilitiesMarshall 1959 Two Kinds of Dirt, Infinite Possibilities
    Marshall 1959 A Living Piece of Rock HistoryMarshall 1959 A Living Piece of Rock History

    A Living Piece of Rock History

    The 1959 Modified isn't just a great-sounding amp — it's a document. It celebrates the modified amp culture that has quietly shaped rock music for decades: players who took a great amp and made it theirs. Marshall has taken that same DIY spirit and made the modifications for you, building the most practical and versatile version of the 1959 that has ever left the factory floor.

    • Faithful Circuit Design: The core topology mirrors the original 1959 “Plexi” schematic — the same transformers, the same valve configuration, the same feel under your fingers — so the history is entirely intact.
    • Modern Versatility for Every Stage: Whether you're tracking in a professional studio, rehearsing in a bedroom, or walking out under stage lights, the 1959 Modified adapts without losing its character.
    • Iconic Plexi Aesthetic: The gold-panel cosmetics, the chrome knobs, the vintage Marshall script — it looks exactly like it sounds: timeless.

    The Amp That Rewrote Rock, Revised

    The Marshall 1959 Modified brings the iconic tone that defined classic rock into the modern era — without losing its soul. Master volume control, two overdrive modes, and switchable tonal voicing give you more flexibility without messing with the magic. Whether you're chasing Hendrix's dynamic depth, Clapton's midrange bite, or carving out your own sound, the 1959 Modified stays true to one of rock's greatest amplifiers while giving you the tools to make it your own.

    Marshall 1959 The Amp That Rewrote Rock, RevisedMarshall 1959 The Amp That Rewrote Rock, Revised

    Marshall 1959 Modified Guitar Amplifier Head Features:

    • Preserves the unmistakable sound behind classic rock 
    • Integrates modern upgrades for enhanced control and versatility
    • New Master volume for legendary tones at lower volumes
    • Ideal for home practice, studio recording, or live performances
    • Switchable bright cap enhance tonal flexibility
    • 2 overdrive modes: a classic break-up for blues and rock & a higher-gain tone for modern rock & metal 

    CALIFORNIA PROPOSITION 65 WARNING

    WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

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    Marshall 1959 Modified Guitar Amplifier Head 100W Specifications

    Marshall 1959 Modified Guitar Amplifier Head 100W Specifications
    Product Specifications

    Marshall 1959 Modified Guitar Amplifier Head Specifications

    • Power: 100W
    • Channels: 2
    • Controls: Inputs Ii (High And Low), Input I (High), Volumeii, Volume I, Treble, Middle, Bass, Presence, Indicator Light, Standby Switch, On/Off Switch
    • Controls (Mod): Master Volume, Bright Switch, Clip On/Off Switch, Clip Type Switch (Diode/Transistor)
    • Outputs: 2x 1/4" Jack Speaker Outputs,
    • Selectable: 16Ω / 8Ω / 4Ω Load
    • Preamp Valves: 2x Ecc83, 1x Ecc83 (Phase Splitter)
    • Power Amp Valves: 4x El34
    • Weight: 21.4 kg / 47 lbs
    • Dimensions (W x H x D): 740 x 305 x 210 mm / 29.1" x 12" x 8.3"

    Frequently Asked Questions

    The Marshall 1959 Modified is a 100-watt all-valve guitar amplifier head based on the iconic Marshall 1959 “Plexi,” updated with a master volume control, switchable bright cap, and a gain boost switch for greater tonal versatility. It retains the same core circuit design and hand-built craftsmanship as the original.

    The Modified adds a master volume control, a switchable bright cap, and a dual-mode gain boost switch — features that give players significantly more control over tone and output level. The fundamental sound and valve configuration of the original 1959 remain unchanged.

    Yes, the master volume control allows the amp to produce its signature high-gain tones at much lower output levels, making it practical for home use and studio sessions without sacrificing tone. This was one of the biggest limitations of the original 1959 that the Modified directly addresses.

    Its classic voice excels in blues, classic rock, and hard rock, while the higher-gain boost mode extends its range into modern rock and metal territory. The switchable bright cap further broadens its tonal palette, making it a versatile option across a wide range of styles.

    Marshall recommends pairing it with a 4x12 cabinet such as the 1960A or 1960B — the same cabinets historically paired with the original 1959. These complement the amp's frequency response and help deliver the full, authoritative tone the 1959 series is known for.
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