MTX THUNDER75.4 4-Channel Amplifier + Amp Wire Kit

400W Class A/B 4-Channel Thunder Series Car Amplifier + Complete 4 Gauge Amplifier Wiring Kit Package

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• 75W x 4-Chan. @ 4 ohms
• 100W x 4-Chan. @ 2 ohms
• 400W x 2 Chan. MAX
• 3-Way System Protection
• 4/3/2/1 Channel Operation
• 8 Gauge Power and Ground Inputs
• Vibration and Extruded Aluminum Heat Sink for Effective Heat Dissipation

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400W Class AB 4-Channel Thunder Series Car Amplifier
Quantity: 1

General Features:

  • Thunder Series 4-Channel Class AB Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 75 watts x 4 chan.
    • 2 ohms: 100 watts x 4 chan.
    • Bridged, 4 ohms: 200 watts x 2 chan.
  • Max power output: 800 watts x 1 chan.
  • Pulse Width Modulated MOSFET power supply
  • LED power (green) and protect (red) indicators
  • Soft start turn-on
  • 4, 3 and 2 channel operation
  • Preamp RCA outputs to daisy chain multiple amps
  • 3-way protection circuitry (thermal, overload, and speaker short protection)
  • Vibration and an extruded aluminum heat sink that dissipates heat effectively
  • Input sensitivity: 200mV - 5V
  • Frequency Response: 15 -25,000 Hz
  • Total Harmonic Distortion (THD): <0.05%
  • Signal to Noise Ration: >78dB
  • Variable high-pass filter (front): 10 ("Off") - 200 Hz, 12 dB/octave
  • Selectable Crossover Modes (rear): LPF / FR / HPF
  • Variable crossover filter: 50 -750 Hz, 12 dB/octave
  • 4 - 8gauge power and ground wiring is recommended for installation. Contact us for information regarding a discount on select amplifier kits from our website when purchased together with this amplifier. Click Here for our contact information.
  • Dimensions: 6-5/16"W x 12-1/8"L x 2-1/4"H
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Belva BAK44

4 Gauge Premium (CCA) Copper Clad Aluminum Complete 4-Channel Amplifier Wiring Kit with RCA for Amplifiers up to 1200 Watts - RED
Quantity: 1

Product Details:

  • Complete 4 Gauge 4-Channel Amplifier Installation Kit
  • Designed for car audio systems up to 1200 watts RMS
  • Premium Powerflex power and ground wire provides optimal power transfer
  • Belva CCA wire is made from 30% copper while the competition uses only 10%
  • Helical Twist Construction Audio Interconnect RCA cables minimize noise and interference
  • MINI-ANL Fuse holder with a 80 amp fuse offers ideal protection for high powered systems
  • Complies to American Wire Gauge standards
  • Also available in Blue
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Kit includes:

  1. 17 ft. (5.2 meters) Red 4 gauge power wire
  2. 3 ft. (.91 meters) Black 4 gauge ground wire
  3. 17 ft. (5.2 meters) Gray 18 gauge remote lead wire
  4. 17 ft. (5.2 meters) Helical Twist 4-channel RCA interconnect cable
  5. 65 ft. (12.2 meters) 16 Gauge Speaker cable
  6. One MINI-ANL Fuse Holder with a 80 amp fuse
  7. One Black rubber firewall grommet
  8. One 4 Gauge Red chrome plated ring terminals
  9. One 4 Gauge Black chrome plated ring terminal
  10. Three 18 Gauge Red Spade terminal
  11. Two 18 Gauge Black Spade terminal
  12. One 18 Gauge Red butt connector
  13. Ten 4" Black zip ties

Specifications & Details

Power Specifications - Full Range Channels
RMS Power @ 4 ohms
75 watts x 4 channel
RMS Power @ 2 ohms
100 watts x 4 channel
Bridged RMS Power
200 watts x 2 channel
Peak Power Output
400 watts x 2 channel
Amplifier Specifications
Amplifier Class
Number of Channels
Total Peak Power Output
800 watts
Total RMS Power Output
400 watts
Maximum Input Gauge Size
Minimum Impedance Unbridged
2 ohms
Minimum Impedance Bridged
4 ohms
THD at Rated RMS Power
Speaker Level Inputs
Preamp Outputs
Built-in Crossover
Low-Pass (LP)
High-Pass (HP)
Full (AP)
High-Pass Crossover Frequency
10 - 200 Hz
Low-Pass Crossover Frequency
50 - 750 Hz
Signal-to-Noise Ratio
78 dB
Remote bass/level controller
Fan Cooled
CEA-2031 Compliant
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Item Details



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Customer Ratings & Reviews

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Customer Reviews

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Awesome product for the price

The following review is for BAK44, which is a part of the bundle you are viewing.

I was overall satisfied with everything in the kit. The wire was great quality and easy to run. I liked that it came with a plastic grommet for my firewall. I think the fuse was really nice and looks great under the hood. Just make sure you have a 4 gauge crimping tool which I did not have. I ended up crimping with some pliers and a hammer to tighten up the terminals.

By JT on January 17, 2014


found this helpful.

Good kit for the $

The following review is for BAK44, which is a part of the bundle you are viewing.

Used this kit to install a 4 channel amp and had plenty of wire to do the job.

By Tomas on January 13, 2015


found this helpful.

great amp kit

The following review is for BAK44, which is a part of the bundle you are viewing.

Made amp installation easy. Good quality gauge wire and inline fuse with this kit.

By Ozzie on January 6, 2015


found this helpful.

excellent value

The following review is for BAK44, which is a part of the bundle you are viewing.

this had everything you need in it to do an amp install. I was impressed with the speaker wire as it was a heavy gauge wire. 14awg I think. it was listed to have 20ft of speaker wire in product description but had 65ft in package, (nice). all the wire was nice and flexible (easy to work with) unlike some cheaper wire I've seen or used that's real stiff. couldn't ask for anything more.....

By werthy1 on November 27, 2013


found this helpful.

Everything I needed

The following review is for BAK44, which is a part of the bundle you are viewing.

Great value, great quality, everything that was necessary to install the full system. Kudos.

By DEREK on January 29, 2015


found this helpful.

Worked Perfect

The following review is for BAK44, which is a part of the bundle you are viewing.

Great price and fast shipping. It was all I needed to hook up my amp and composite speakers. Plenty of length on all can cables.

By Shon on February 27, 2014


found this helpful.

good amp kit

The following review is for BAK44, which is a part of the bundle you are viewing.

The amp kit works well. The installation was very easy. I had plenty of wire. For the power and ground wires I soldered on my own copper lugs. The only real drawback is that this kit is cca instead of ofc, but that is why it is so cheap.

By Philip on January 26, 2014


found this helpful.

Amp wiring kit

The following review is for BAK44, which is a part of the bundle you are viewing.

This is an above average installation kit with all the wiring you need except a RCA for 5th channel.

Half price with bundle with Amp

By Joel on December 30, 2014


found this helpful.

Really Good Quality!!

The following review is for BAK44, which is a part of the bundle you are viewing.

Got this wiring kit at a discount after purchasing together with amp, so ended up at around $37. Ive bought 4 gauge wiring kits before at local radio shop for the same price, but not the same quality at all! The power and ground wire are super flexible, great for passing through firewall and bending around tight corners. Great quality anl fuse, and was surprised to find 20 ft of equally good, thick, speaker wire, just enough to rewire my whole car! And loved the 4 twisted rca cables that make install a breeze, and helps keep everything looking neat and clean. Perfect for a 4 channel Amp Install.

By Frank on January 1, 2014


found this helpful.

works great

The following review is for BAK44, which is a part of the bundle you are viewing.

everything I needed to install, good price and value. Will order another shortly.

By Donnie on September 2, 2014


found this helpful.


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Price: $239.94

Essential add-ons
NVX XBG3PK Big 3 Kit with True 0 Gauge 100% Oxygen-Free Copper

1/0 AWG Big 3 Upgrade Kit with 100% OFC Wire for Audio Sytems up to 350 Amps



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