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MTX Audio XThunder 704X

420W RMS, 4-Channel Amplifier X Thunder 704 X

5.0

(5 reviews)

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The product on this page is discontinued.

Specials with this product

  • Free Ground Shipping to the 48 statesdetails
  • X Thunder Series 4-Channel Class AB Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 70 watts x 4 chan.
    • 2 ohms: 105 watts x 4 chan.
    • Bridged, 4 ohms: 210 watts x 2 chan.
  • Max power output: 840 watts
  • Patented Adaptive Class AB Technology
  • LED power indicator
  • Anodized Finish
  • Single channel operation
  • Chrome X Thunder Badge
  • Stereo gain control
  • Heavy duty aluminum construction with large heat-sinks
  • Variable high-pass filter (40-8000 Hz, 12 dB/octave)
  • Variable low-pass filter (40-800 Hz, 24 dB/octave)
  • Frequency response: 20-20000 Hz
  • Dimensions: 15" L x 9-1/8" W x 2-1/4" H
  • 4-gauge power and ground leads recommended. Contact us for information regarding a discount on a select amplifier kit when purchased together.
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty
Power Specifications - Full Range Channels
RMS Power @ 4 ohms70 watts x 4 channels
RMS Power @ 2 ohms105 watts x 4 channels
RMS Power @ 1 ohmN/A
Bridged RMS Power210 watts x 2 channels
Peak Power OutputN/A
Amplifier Specifications
Amplifier ClassAB
Number of Channels4
Total Peak Power Output840 watts
Total RMS Power Output420 watts
Maximum Input Gauge Size4 AWG
Minimum Impedance Unbridged2 ohms
Minimum Impedance Bridged4 ohms
THD at Rated RMS Power1%
Speaker Level InputsYes
Preamp OutputsNo
Built-in CrossoverLow-pass (LP)
High-pass (HP)
High-Pass Crossover Frequency40 - 8000 Hz
Low-Pass Crossover Frequency40 - 800 Hz
Subsonic FilterN/A
Signal-to-Noise Ratio75 dB
Channel SeparationN/A
Bass BoostN/A
Bass/Gain RemoteNo
Fan CooledNo
Fuse RatingN/A
CEA-2006 CompliantNo
Warranty and Return Policy
Return Policy Standard Return Policy
Parts Warranty Duration1 year
Labor Warranty Duration1 year
Warranty ProviderManufacturer
Customer Review Summary for MTX Audio XThunder 704X
Average Customer Rating is 5.0 out of 5 stars:
5.0
based on 5 Reviews
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Rating Distribution:
5 star:
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100%
4 star:
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0%
3 star:
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0%
2 star:
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1 star:
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what's this?
Average Attributes Rating:
Durability
4.8
Value
4.6
Features
4.4
Design
4.6
Usability
5.0
what's this?
Most Helpful Customer Reviews:
April 10, 2011 Great Sound Quality
Review by
M. Conner from Fort Wayne, IN
Overall
Durability
Value
Features
Design
Usability
As far as sound goes this amp was built very well. I was originally looking for one that had a built-in fan because I mounted the amp in the trunk of my car, however I was able to get this amp for a really good price. The sound quality really impressed me. I have it running a pair of Boston Acoustics SX50 components and a pair of BA SL60 components. Just make sure that when you mount it you give it plenty of room to breath, if you mount it in an area without much air space (like I did originally) you'll most likely have some overheating issues. But once I moved so that the front of the amp was completely open to space, I haven't had a single problem with it. I would definitely recommend this amp.
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April 3, 2011 704x
Review by
chris from Saint Louis, MO
Overall
Durability
Value
Features
Design
Usability
this is a great amp... sounds amazing on my components
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May 11, 2010 MTX Audio XThunder 704X
Review by
Hank from Roswell, GA
Overall
Durability
Value
Features
Design
Usability
This is a solidly built amplifier. I have it pushing a pair of polk db 5.25's and 6x9's and they absolutely sing. I installed it all myself which was tough to do but i saved myself a good 100 bucks. The high pass filters come in handy when running the speakers because i'm able to make sure they don't blow or get pushed to hard. I ran it with a 4 gauge wire but im sure it would be okay to do it with 8 gauge.
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March 2, 2010 MTX amp is awesome.
Review by
jack from reno, nv
Overall
Durability
Value
Features
Design
Usability
i have this guy powering two kicker ks components and two kicker ks coaxial 6.5"s

it does an amazing job, my speakers sound super clear and loud. i definitely recommend. my only complaint is that my sub amp turns on about a second before this one, its really no big deal but thought i'd mention it. get it from sonic at the best price ever!
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June 2, 2009 great amp for the price
Review by
Kadow from Pewaukee, Wisconsin
Overall
Durability
Value
Features
Design
Usability
i hav this amp hooked up to a pair of MTX 6x9's and a pair of MTX 5.25's..My system sounds great. The amp puts out pleanty of power with very little or almost no distortion. Highly recomended.
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Amplifier Wiring Kits
Get the wires you need to properly install and power your car amp.
 ProductPriceAdd?
Kicker ZCK4Kicker ZCK4
Complete 4 Gauge Amp Wiring Kit with RCA Interconnect Cables and Speaker Wire!
$89.99
StreetWires ZN1K-04StreetWires ZN1K-04
4 Gauge (AWG) ZN1 Series Single Amplifier Installation Kit for Systems up to 1000 Watts
$37.99
Kicker PKD4Kicker PKD4
Dual Amplifier 4 Gauge Amp Installation Kit w/ Distribution Blocks
$99.99
Bass Remote Control
Control the volume level of your bass and amplifier from the front of the vehicle.
 ProductPriceAdd?
Universal Remote Level Bass ControlUniversal Remote Level Bass Control
Controls bass level and frequency via RCA/Interconnect connectors on any amp.
$14.99
Small Universal Remote Level Bass ControlSmall Universal Remote Level Bass Control
The Scosche RLC is a smaller universal bass remote that connects via RCA inputs.
$12.99
Speaker Wire
Improve the sound quality by delivering more power when replacing your factory wiring. High quality speaker will maximize your amplifier investment and system performance.
 ProductPriceAdd?
Kicker XW1220 Speaker WireKicker XW1220 Speaker Wire
12 Gauge Wire - 20 ft. of Dual Twist Speaker Cable with Sleeves for a Clean Install
$24.99
StreetWires SCP1215BL - 12 AWG Speaker WireStreetWires SCP1215BL - 12 AWG Speaker Wire
12 Gauge Wire - 15 ft. of Speaker Cable with Twisted Construction
$19.99
RCA Interconnects
You will need a good set of RCA interconnect cables to connect your amplifier to your head unit. Using high quality cables ensure the best sound possible by reducing unwanted noise interference, providing tight contacts, and utilizing the latest in cable technology.
 ProductPriceAdd?
Kicker 4-Channel RCA Audio Interconnect CableKicker 4-Channel RCA Audio Interconnect Cable
4 Meters (13 ft.) 4-Channel RCA Audio Interconnect Cable with Dual Twisted-Pair, Hyper-Flex Technology
$21.99
StreetWires ZN9 Series Interconnect CableStreetWires ZN9 Series Interconnect Cable
16.4 ft. of 4-Channel RCA Cable with Rhodium-plated contacts and ZeroNoise construction for clear signal transfer!
$99.99
Capacitors
Capacitors store energy for the amplifier to use on demand, thereby assisting in the elimination of dimming lights during peak power surges during use.
 ProductPriceAdd?
Raptor C1F ** SPECIAL PRICE **Raptor C1F ** SPECIAL PRICE **
True 1.0 Farad Car Audio Capacitor for up to 1000W Max
$31.99
e2 ECAP1 by Scosche - Mid-Level 1 Farade2 ECAP1 by Scosche - Mid-Level 1 Farad
Digital 1.0 Farad Car Audio Capacitor for up to 1000W Max
$43.99
Rockford Fosgate RFC1D - Top of the Line 1 FaradRockford Fosgate RFC1D - Top of the Line 1 Farad
Digital 1.0 Farad Car Audio Capacitor for up to 1000W Max
$104.99
Installation, Tools & Accessories
With our professional install card, you can have your amp installed by a pro near you, or you can purchase tools and do the install yourself.
 ProductPriceAdd?
StreetWires FB4StreetWires FB4
4 AWG / 4 Gauge Firewall Bushing
$7.99
Kicker DB1448 (09DB1448) - Top of the Line!Kicker DB1448 (09DB1448) - Top of the Line!
Distribution Block with Two 1/0 or 4 AWG Inputs and Four 4 or 8 AWG Outputs
$18.99
Professional Installation for your Car Power AmplifierProfessional Installation for your Car Power Amplifier
Covers labor charges through our professional installer network.
$89.99
Testing and Performance
Optimize your system's performance with testing tools such as SPL meters, bass test discs and more!
 ProductPriceAdd?
AutoSound 2000 CD-104AutoSound 2000 CD-104
The ultimate amplifier level setting disc used for evaluation of audio components
$12.99
AutoSound 2000 CD-102AutoSound 2000 CD-102
High Frequency Test CD specifically designed for the set-up and evaluation of sound system imaging and placement.
$12.99
AutoSound 2000 CD-103AutoSound 2000 CD-103
Audiophile reference series test disc for evaluation of all audio components.
$12.99

Product Summary

Manufacturer: MTX
Model number: 704X
UPC: 715442241149
Weight: 11.00 lbs
Internal SKU: 704x
Internal product ID: 9036
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Customer Testimonial

Very fast shipping and good price. I'd recommend it to my friends or anyone thank you sonic electronix.

- Rommel from CA

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