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Matrix GT1000FX-1U Power Amplifier

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Page last updated Dec 06, 2025

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Description

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Take your guitar's tone to the next level with the Matrix GT1000FX-1U Power Amplifier. Designed specifically for guitarists who demand precision and clarity, this power amplifier delivers 1000 watts of consistent, clean power that can handle both concert and studio settings. The GT1000FX-1U stands out with its class-leading efficiency, ensuring that your sound remains pure and undistorted, even at higher volumes. Musicians will appreciate its versatile compatibility, as it effortlessly pairs with a wide range of preamps and effects processors.

Housed in a sleek 1U rackmount chassis, the GT1000FX-1U is ideal for touring professionals looking to minimize weight without compromising power. Its intuitive design includes comprehensive connectivity options, allowing seamless integration into any rig. Whether you're performing in an intimate venue or a large arena, this amplifier ensures your guitar's voice is heard with stunning clarity and depth.

Key Features:

1000 watts of power output for robust, clean sound
High-efficiency design for reduced heat and energy consumption
1U rackmountable chassis for compact setup
Versatile compatibility with various preamps and effects
Balanced XLR and unbalanced 1/4" input options
Comprehensive protection circuitry to safeguard your equipment during intensive use
Lightweight construction for easy transport and installation

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Piguitars Oficial

MATRIX - GT1000FX-1U / FR12p

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Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Matrix GT1000FX-1U Power Amplifier.

User experience

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The Matrix GT1000FX-1U is praised for its reliability, with some users highlighting its use by bands like Metallica, although one owner experienced multiple failures leading to a switch to a different brand.
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Comparisons

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The Orange Pedal Baby, a class AB amp, is noted for its punchier sound compared to the Seymour Duncan Powerstage 200, which is class D.
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Use cases and applications

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The Matrix GT1000FX-1U can effectively power large setups, such as a dual 4x12 Mesa cabinet configuration, providing substantial stage presence.
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The GT1000FX can be effectively paired with Xitone 12” passive wedges, offering FRFR and standard cab modes via a 3db tweeter cut switch.
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Features and functionality

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The Matrix GT1000FX-1U is often used in stereo configurations with digital modelers like the Axe3, showcasing its versatility in modern digital and analog setups.
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Matrix amps, including the GT1000FX-1U, are rated at 4 ohms, so using a 16-ohm cab reduces the output to a quarter of its wattage.
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Setup and maintenance

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Users suggest setting the Matrix amp's sweet spot between 1-2 o'clock and adjusting the AxeFX's output accordingly for optimal performance.
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James Hetfield

Singer, Guitarist

Metallica

Verified via YouTube

In this video, James Hetfield's rig is also shown to consist of a Matrix GT1000FX-1U power amp.

Kirk Hammett

Guitarist

Metallica

Verified via YouTube

In this video, Kirk's rig is shown to consist of a Matrix 1000FX-1U power amp.

Robert Trujillo

Bassist

Metallica

Verified via YouTube

@13:30 Kirk's tech suggest that James/Kirk and Rob have very similar racks

James Iha

Guitarist, Bassist

The Smashing Pumpkins

Verified via Premierguitar

According to Premier Guitar article, Iha uses Matrix GT1000FX power amplifier.

Claudio Sanchez

Singer, Guitarist

Coheed and Cambria

Verified via Premierguitar

Claudio uses a Whirlwind switcher and Audio-Technica wireless units into a Fractal Audio Axe-FX Ultra through a Matrix GT1000FX power amp to a cabinet onstage for monitoring. The house sound goes direct from the Axe-FX.

For patches, Claudio's main distortion tone is based on two Marshall Super Lead types, with a wah and pitch shifter set to expression pedals onstage. Medium gain is based on an old Orange head with various delays and effects, and his clean is modeled after a brownface Fender amp with delay and compressor.

The system is controlled with a Voodoo Lab Ground Control Pro with two Mission expression pedals for octave up and wah. He uses a Mission Tap Tempo pedal as well.

Kevin 'Noodles' Wasserman

Guitarist

The Offspring

Verified via YouTube

At 5:54 mark, we can see two Matrix GT1000FX-1U power amplifiers at the very bottom of the rack.

"Wasserman uses Fractal’s “Friedman BE” preset (which is based on a Friedman BE-100 Brown Eye/Hairy Brown Eye) for all his dirty sounds, and the “Bassguy Bass” preset (based on a Fender ’65 Bassman) for clean tones. The Fractal also sends a signal to a Matrix GT1000FX-1U power amp, which powers two Egnater Tourmaster 4212 cabinets loaded with Celestion Vintage 30 speakers, to move some air onstage."

http://www.premierguitar.com/articles/22510-rig-rundown-the-offsprings-kevin-noodles-wasserman