XTHUNDER800.5 800W RMS 5-Channel Full Range Class D Amplifier

Car Amplifiers

Amplify Your Entire System

Big Power For Five Channels

MTX XThunder 1500 Watt Amplifier

Extreme Power

Continuing the Legacy that MTX Audio started almost 20 years ago with the development of the Thunder amplifier series, we introduce the next generation – XTHUNDER. These amplifiers are designed to deliver extreme power to the most demanding speaker system designs and are capable of driving subwoofers and full range speakers alike

The XTHUNDER800.5 5-channel amplifier will power four speakers and a thundering subwoofer or two with power to spare while easily handling the abuse of long hours of extreme play.

Full Range Class D Topology 2Ω Stable Bridgeable

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Built to Drive Four Speakers and a Sub

Capable of delivering 400W RMS power into a 2Ω subwoofer load and 125W RMS power into each of the four full range channels at 2Ω, the XTHUNDER800.5 is ideally suited to power your entire MTX system. This is made possible by using high grade materials and a never wavering dedication to precision workmanship. This is what allows the XTHUNDER Series to deliver exceptional sound quality and performance.

MTX XThunder800 Car Subwoofer Amplifier

What’s Under the Hood?

We start by using a highly efficient full-range class D amplifier topology to maximize electrical power efficiency while ensuring total thermal management, even under extreme use. This is all built on a dual sided circuit board with oversized copper traces that maximize electrical flow and minimize power loss before it gets to your speakers. Components are installed using surface mount technology making the circuit incredibly durable and vibration resistant allowing them to survive even when used in big bass systems.

Additional heat management is handled by the top cover which functions as a large surface area heat sink. This effectively dissipates built-up heat so the amplifier runs cooler and can play louder, longer. The chassis also includes removable side covers that create a stealth look when installed, but also allow for easy access to connections and settings after mounting.

Of course, the XTHUNDER800.5 isn’t all power and no finesse. It is loaded with features that enable full customization to ensure the best possible sound quality without distortion. Using the built-in high and low pass filters, subsonic filter, and bass boost you are able to get exactly the sound you want from your system every time.

Don't Forget The Amp Kit

Remember, you cannot install an amplifier without an amplifier kit. MTX recommends using a ZN5K-04 or ZN5K-08 to power the XTHUNDER800.5.

How to Properly Set Your Amplifier's Gain


Full Range Class D Design - Offers Excellent Efficiency for Both Subwoofers and Full Range Speakers

Low Profile Design - Allows for Installation Anywhere

Variable Bass Boost - Allows you to boost your bass output by up to 18dB @45Hz

Cast Aluminum Top Cover - Efficiently Dissipates Heat

Variable Butterworth Crossover - a 12dB/Oct crossover that allows you to set the frequency your speakers will play down or up to

Triple Protection Circuitry - Thermal, DC Offset, and Short Circuit Protection circuitry ensures the amplifier will protect itself in the event of a problem

Tech Specs
4 Ohm RMS Power Output 75 x 4 (HF) + 300 x 1 (LF)
Signal to Noise Ratio >70dB
2 Ohm RMS Power Output 125 x 4 (HF) + 400 x 1 (LF)
THD <0.2%
Frequency Response 10Hz - 20kHz F/R + 10Hz - 250Hz Sub
Maximum Input Signal 5V
Max Sensitivity 100mV
Low Pass Filter Variable, 40Hz - 250Hz, 12dB/Oct (Sub)
High Pass Filter Variable, 40Hz - 250Hz, 12dB/Oct (F/R)
Subsonic Filter Fixed, 27Hz, 12dB
Bass Boost 18dB @ 45Hz
Topology Full Range Class D
Depth 8.9" (226.7mm)
Length 14.2" (359.9mm)
Height 2.03" (51.5mm)
Support Files
MTX004783 XTHUNDER Series Owner's Manual (32 pages) View |  Download
50Hzmp3 Download
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