LEAN AUDIO No.1 for PA Loudspeakers, Guitar Speakers, Bass Guitar Speakers & HI FI speakers

Matrix GT800FX 800w Guitar Power Amplifier x2 Channels 400watts @ 4ohm


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Designed and built in the UK

The Matrix GT800FX is a lightweight 1U format stereo rack mount power amplifier designed specifically for use by guitarists. Whether you're using guitar modellers like the Kemper Profiler, Fractal Audio Axe FX, Line 6 or just needing a traditional "slave" amplifier, the GT800FX gives you 2 channels of 400W class AB power.

In bridged mode it delivers a huge 800W into 8 ohms.

Using premium quality components and high quality MosFets allows the GT800FX to give a sound that many users have compared to high end valve power amps whilst it's ability tohandle impedances of 4 ohms and over including mismatched levels gives you the widest choice when using your favourite cabs and speakers. Running a 2x12 cab with an 8 ohm and 16ohm speaker in mono or running a 4 ohm cab on one side and a 16ohm cab on the other in stereo mode is no problem for the GT800FX!

The amp also features extensive protection circuitry ensuring it is protected from loudspeaker short circuits and miswiring. The front panel has indicators for protection, bridged mode and signal lights showing the output signal strength.

All this power in a 3.7kg rugged, road worthy, high quality amp that delivers a flat response letting your modeller or preamp shape the sounds you need without further colouration from your poweramp. Dual speed fans ensure that the amp stays cool even under the most demanding of situations. Neutrik combi 1/4 inch/XLR inputs and combi 1/4inch/Speakon outputs give you maximum flexibilty in how you connect the GT800FX.

The Matrix GT800FX is a product born from the feedback of guitarists, for guitarists and is the industry standard for lightweight solid state guitar amps.

Price includes VAT.

Number of channels

Power Output RMS 4ohm

400W Per Channel
Power Output RMS 8ohm 250w Per Channel
Power Output Bridged Mode 8ohm 800w
Supply Voltage

230V 15%
Average Supply Current, Full load
Mains Connector

Frequency Response (3dB ref 1kHz) 8Hz - 24kHz
Signal to Noise Ratio (ref full power, 1kHz) 96dB
THD (1kHz, full power) 0.06%
THD (20Hz - 20kHz, full power) <0.1%
Slew Rate 50V/s
Damping Factor (ref. 8R, 100Hz)
Cooling (Temperature Controlled Dual Speed Fan)

2x 40mm Fan
Cooling Direction Front to Back
Dimensions, mm 482 x 44 x 210
Weight 3.7kg

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