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MTX XTHUNDER125.4 500 Watt RMS 4-Channel Amplifier Car Stereo Class A/B+Amp Kit

500W RMS XThunder Series 4-Channel Class AB Amplifier Package

MTX
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• RMS Power: 90W x 4 @ 4 ohm, 125W x 4 @ 2 ohm
• RMS Power: 500W
• CEA-2006 Compliant/Preamp Outputs/LPF
• Dimensions: 8.93" W x 14.17" L x 2.03" H

Learn more about the xthunder1254_bak42_bbic3

We apologize

This item has been discontinued


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Description


MTX brand icon

Authorized dealer

MTX XTHUNDER125.4

500W RMS XThunder Series 4-Channel Class AB Amplifier
Quantity: 1

General Features:

  • XThunder Series 4-Channel Class AB Car Amplifier
  • RMS Power Rating:
    • 4 ohm: 90 watts x 4 chan.
    • 2 ohm: 125 watts x 4 chan.
  • Variable Bass Boost (0 to +18 dB bass boost at 45 Hz)
  • 4 channel operation
  • Speaker-level (high-level) inputs with signal sensing for automatic turn-on
  • Variable high-pass filter (40-250 Hz, 24 dB/octave)
  • Dual sided circuit board with increased copper traces
  • 4 gauge power and ground wiring is required for installation
    • Contact us for information regarding a discount on select amplifier kits from our website when purchased together with this amplifier
  • Dimensions: 8.93"W x 14.17"L x 2.03"H
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Belva BAK42BK

4 Gauge Premium (CCA) Copper Clad Aluminum Complete 2-Channel Amplifier Wiring Kit with RCA for Amplifiers up to 1200 Watts - GRAY
Quantity: 1

Product Details:

  • 4 Gauge 2-Channel Complete Amplifier Installation Kit
  • Designed for car audio systems up to 1200 watts RMS
  • Made from 100% Copper-Clad Aluminum (CCA)
  • Satin chromed Mini-ANL fuse holder offers ideal protection for high-powered systems
  • Full spec power and speaker wire meet or exceed American Wire Gauge standards
  • RCA Interconnect Cable
  • Twisted-pair construction provides protection against interference
  • Split-tip silver-plated ends offer high-quality performance
  • Molded ends equipped with colored channel identifiers for easy recognition
  • Includes an assortment of wire termination hardware and cable ties
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Kit includes:

  1. 17 ft. Gray 4 gauge power wire
  2. 3 ft. Black 4 gauge ground wire
  3. 17 ft. Gray 18 gauge remote lead wire
  4. 20 ft. 16 gauge speaker wire
  5. One 17 ft. 2-channel twisted-par construction RCA interconnect Cable
  6. One Mini-ANL Fuse Holder with 80 amp Mini-ANL fuse
  7. One Black rubber firewall grommet
  8. Two 4 Gauge Chrome Plated ring terminals
  9. Five 16 Gauge Spade terminal
  10. One 18 Gauge Red butt connectors
  11. Ten 4" Black zip ties

Belva BBIC5

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  • 2-Channel RCA, perfect for stacking, strapping or connecting amps
  • Helical Twist construction minimizes noise and interference
  • Patented high tolerance compact machined metal end
  • Packed in resealable bag
  • Length: 5m (16.4 feet)
  • Also available in 9.8 Ft.
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Product history:

MTX (2) BBIC5,BAK42BK,XTHUNDER125.4 thumbnail
(newest, current model)
MTX TH90.4 thumbnail
(previous model, replaced by MTX XTHUNDER125.4 500 Watt RMS 4-Channel Amplifier Car Stereo Class A/B+Amp Kit)

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Specifications & Details


Power Specifications - Full Range Channels
RMS Power @ 4 ohms
90 watts x 4 channel
RMS Power @ 2 ohms
125 watts x 4 channel
Amplifier Specifications
Amplifier Class
A/B
Number of Channels
4-Channel
Total RMS Power Output
500 watts
Maximum Input Gauge Size
4 AWG
Minimum Impedance Unbridged
2 ohm
THD at Rated RMS Power
0.2%
Speaker Level Inputs
Yes
Built-in Crossover
High-Pass (HP)
High-Pass Crossover Frequency
40 - 250 Hz
Signal-to-Noise Ratio
70 dB
Bass Boost
0 - 18 dB
Fuse Rating
40A x 2 
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

MTX

Model Number:

(2) BBIC5,BAK42BK,XTHUNDER125.4

Weight:

13.30lbs

Internal SKU:

xthunder1254_bak42_bbic3

Internal Product ID:

158867

Customer Ratings & Reviews


MTX XTHUNDER125.4 500 Watt RMS 4-Channel Amplifier Car Stereo Class A/B+Amp Kit thumbnail image

5 star
81%
4 star
11%
3 star
6%
2 star
0%
1 star
2%



Durability
4.7
Value
4.8
Features
4.6
Design
4.8
Usability
4.7

Customer Reviews

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Quality Product

The following review is for BAK42BK, which is a part of the bundle you are viewing.

Works very well with my Rockford Fosgate sub system in my car.

By Ronald on December 11, 2014

135 found this helpful


good deal!

The following review is for BAK42BK, which is a part of the bundle you are viewing.

Pretty decent value for the price. Worked out great, thanks.

By Brett on January 29, 2015

130 found this helpful


Usable

The following review is for BAK42BK, which is a part of the bundle you are viewing.

The wiring has done me right so far but the only thing I don't like is the speaker wires. You have to carefully split it so the wire doesn't show. Other than that minor thing everything was great and a great value!

By tyler on November 18, 2014

126 found this helpful


price is right

The following review is for BAK42BK, which is a part of the bundle you are viewing.

the price is right for this setup. the ground wire and the power wire are to big for my amp but i made them fit. better to have to much than not enough so if i upgrade to a larger amp it will be fine.

By Mark on November 13, 2014

123 found this helpful


Accessories for product

The following review is for BAK42BK, which is a part of the bundle you are viewing.

Just what I needed and made installation so much easier. Thanks

By Susie on February 9, 2015

113 found this helpful


awesome products

The following review is for BAK42BK, which is a part of the bundle you are viewing.

I run 2 12inch audiobahn exursions on this amp and it pushes them very well. The size is perfect not to big and fits right unerneath the seat or small space. The best part is it stays pretty cool even after running most the day.

By CJ on March 22, 2015

108 found this helpful


good wires

The following review is for BAK42BK, which is a part of the bundle you are viewing.

I like the wire kit I got with my amp it seems to be holding up goo it handles the power of the amp I got but I would of gave it 5 stars all the way around but I wold of like the ground at less 2 more feet for good use but over all its a nice kit

By jay on March 8, 2015

100 found this helpful


Good stuff

The following review is for BAK42BK, which is a part of the bundle you are viewing.

Great product last a long time good value for the money.

By Brandon on December 7, 2014

106 found this helpful


Cable

The following review is for BAK42BK, which is a part of the bundle you are viewing.

Good product fast shipping awsome seller... keep up the good work.....

By Rondell on November 9, 2015

84 found this helpful


Perfect kit

The following review is for BAK42BK, which is a part of the bundle you are viewing.

Comes with everything you need. Works good with my 800w system

By Chad on May 14, 2020 Checkmark Icon Verified purchase

69 found this helpful



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Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
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  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.