Mono subwoofer amplifier — 500 watts RMS x 1 at 2 ohms

Item #: 236THND5K1

In Stock

41 Reviews



Your price: $149.99 Earn up to 150 Rewards points

Add to Cart

+ Add to wishlist + Email me alerts for this product

View all associated offers

Upgrade your power for better sound

You'll get some serious MTX bass mojo when you put the MTX THUNDER500.1 mono amp in your car. This compact amp will drive your subwoofer setup with up to 500 watts RMS. Hook this amp up to a nice set of subs, and you'll hear sounds you've never heard before, even in your favorite songs. And this little bruiser wil truly fit in places where amps don't usually go.

MTX THUNDER 500.1 control panel

MTX THUNDER 500.1 control panel

Advanced tone control

You can adjust the low-pass filter and subsonic filter to get the best possible sound from your sub and enclosure. In the unlikely event you want to bump up the bass a little, you also have access to a selectable bass boost.

Product Highlights:

  • mono subwoofer amplifier
  • 300 watts RMS x 1 at 4 ohms (500 watts RMS x 1 at 2 ohms)
  • variable low-pass filter (40-220 Hz, 12 dB/octave)
  • selectable bass boost (0, 6, 12 dB at 50 Hz)
  • variable subsonic filter (20-50 Hz, 12 dB/octave)
  • Class-D amplifier design
  • frequency response: 20-220 Hz
  • preamp inputs
  • 4-gauge power and ground leads and a 60-amp fuse recommended — wiring and hardware not included with amplifier
  • no onboard fuses — when installing multiple amps in a system, an additional 60-amp in-line fuse between the distribution block and the amplifier is recommended
  • 9-1/2"W x 2-1/4"H x 6-5/16"D
  • warranty: 5 years (free repair or replacement for 2 years; prorated replacement for years 3 through 5)
  • Our 60-day money-back guarantee

My system has plenty of power. Who needs an amp?

You might think you don't need an amp because you have a 400-watt system in your car, or because your new stereo puts out 50 watts a channel. But those are peak wattage ratings, which may boil down to 15 or 20 watts per channel, using the more realistic RMS rating. An amp sends your speakers the power they need to deliver your music with clarity and impact, whether you're using factory speakers or high-performance components. And low-frequency reproduction requires lots of power, so an amp is an absolute must if you're adding a sub to your system.

MTX THUNDER500.1 Reviews

Average Customer Review:

41 reviews
Review this product
Great Gear Giveaway

Submit a review and then enter to win a $350 rewards card


Review this product:

Thanks for taking the time to share your experiences about this product. Please be sure to focus your comments on the product itself. Read our Review Guidelines for more information.

Your email won't be visible. Please use the email address that is associated with your order.
(e.g., JohnD) Your review will be signed using the display name and location
(e.g., Charlottesville, VA)

Click on a star to rate the overall product on a scale of 1-5
1500 characters left
  Attach a YouTube Review
Crutchfield Video Review Guidelines
  • Only submit videos that you made or are authorized to use.
  • Do not submit videos that contain music, video or visuals that are copyrighted and belong to someone else.
  • Please see our Review Guidelines for more information.
500 characters left
500 characters left

Perfect fit

Written By Phil S, Michigan on Saturday, November 14, 2015

Crutchfield Customer Review (What's this?)

Perfect fit under second row seat in Jeep Commander. Good install and support when I asked a question. Sounds great.

Pros: Compact size. Looks and sounds great.

Cons: No high level input.

Awesome Amplifier

Written By JoelB, Indiana on Wednesday, August 05, 2015

Crutchfield Customer Review (What's this?)

Great amplifier I have it hooked up to MTX RTL 12X2D and the bass is extreme!

Pros: Easy installation and setup. Worked immediately and perfect pair fore MTX RTL 12X2D

Cons: Not any that I can think of.

Great amp!

Written By Jwinter, 84075 on Sunday, June 28, 2015

Crutchfield Customer Review (What's this?)

Awesome amp! Great power out of such a small amp! Powering two Rockford fosgate 10's! Sounds awesome!

Pros: Small and compact fits in small spaces!

Cons: None

very good amp

Written By Wrench, Maryland on Wednesday, May 13, 2015

Crutchfield Customer Review (What's this?)

easy to install and has great sound with the speakers choosen

Pros: easy to install and had easy to understand instructions

Cons: none

Great product

Written By Chance, Oklahoma City on Monday, March 23, 2015

Crutchfield Customer Review (What's this?)

Great product, pushes my MTX shallow mount 10 very nicely.

Pros: Easy install with easy to understand instructions. Small footprint and easily mountable in my FRS.

Cons: None

mtx thunder500

Written By Reggie, dallas tx on Tuesday, January 13, 2015

Crutchfield Customer Review (What's this?)

This little amp is just enough if not more than what I needed. I am very satisfied and with the sound quality this little amp definitely backs up the brand!

Pros: It's small so you have an advantage if you have limited space. It pushes my 2 kicker cvt's with no problem. The amp hasn't gotten hot any. Overall this thing deserve 5 stars

Cons: No cons

Great amp / hard punch to sub

Written By Greg, Middletown on Sunday, December 07, 2014

Crutchfield Customer Review (What's this?)

Compact size with clarity & lots of power

Pros: Clarity , power, built in sub cross over

Cons: None

Very good Amp

Written By scottrr, Miwaukee, WI on Monday, September 29, 2014

Crutchfield Customer Review (What's this?)

Very good mono amp, Small, cool, and takes alot of vibration-at least so far.

Pros: Small, Doesn't get Hot

Good amp, good price

Written By SteveR, Dayton, OH on Thursday, May 22, 2014

Crutchfield Customer Review (What's this?)

Nice amp, drives my Rockford Fosgate 15" sub very nicely. Amp stays cool, small footprint made for easy install under the seat. Good value for the price, good sound.

Pros: compact & easy to mount, good sound and power, good price.

Cons: haven't found any yet!

Great little amp

Written By LMLHD, APO Germany on Friday, May 09, 2014

Crutchfield Customer Review (What's this?)

Awesome amp for a great price. I have it powering a JL Audio 10w6v3 and the amp does just fine. I set the gain with an oscilloscope and after calculating the voltage with the speaker ohm level, the amp is putting out 548 watts RMS with no clipping.

Pros: Excellent value. Powerful.

Cons: None

MTX Rocks

Written By Russ, South Dakota on Saturday, March 15, 2014

Crutchfield Customer Review (What's this?)

  • "Coolness Factor"
  • Build Quality
  • Ease of Use
  • Sound Quality
  • Value

MTX Thunder 500, Audio control LC2 shallow mount 10" DVC 2 ohm is just what my 2011 F 150 SC needed. This amp has is amazing more than I would need. The gains turned down and still pounds. Crystal clear sound from both. Thank you Crutchfield

Pros: Small size , very we'll made, lots of power, 2 ohm stable.

Cons: None!

The little amp that could...

Written By RubenN, Los Angeles, CA on Tuesday, March 04, 2014

Crutchfield Customer Review (What's this?)

  • "Coolness Factor"
  • Build Quality
  • Ease of Use
  • Sound Quality
  • Value

My MTX 500.1 mono amp is paired with a 10'' Alpine Type S in a ported box at 2 ohms and it POUNDS. The amp is as small as they could possible make these things which was the main reason (along with the price point) for choosing this amp. Having owned an Alpine mono amp of the same wattage, this one seems to hit a little harder. Having to turn up my system for over an hour of bass-heavy tunes, this amp was warm and didn't break a sweat.

Pros: - Small size - value in power output

Cons: - No remote bass controls (hardly a CON)

great sub amp

Written By hotrod, central, AL on Tuesday, February 18, 2014

Crutchfield Customer Review (What's this?)

Using this to power a 10" Polk sub in a sealed enclosure.... Plenty of power and I really like the small size - able to mount just about anywhere...

Pros: powerful small footprint

Cons: none yet

Small price, big punch

Written By Stan, Baton Rouge, LA on Thursday, January 23, 2014

Crutchfield Customer Review (What's this?)

I have this mated with a JL Audio 13" TW5-3 3-ohm sub in one of their StealthBoxes and a Pioneer AVH-X1500DVD head unit. The speaker handles up to 600W RMS and this beast of an amplifier slams it with the gain set at about 1/3 of maximum and the bass boost (has settings for 0db, 6db, 12db) at 0db! The bass response is tight and fairly flat all the way down to the lower registers. It is rated at 300W for a 4-ohm load and 500W with a 2-ohm load, so I'm guessing it's rated at about 400W with a 3-ohm load (Manual doesn't specify output for 3-ohm load). But it seems like this amp may be underrated on power. Small footprint and unbelievable price tag for an amp this good. I've heard (never owned) other MTX Thunder amps in the past and they've always impressed me, but the price tag of this one raised a flag. I read the mostly positive reviews and decided to take a chance, and I'm 100% convinced I made a great buy. Runs cool, even at pretty loud volume. If you need solid, clean power at a very reasonable price, this is the amp for you.

Pros: Small footprint, clean sound, powerful!

Cons: It wasn't free

hearing goodbye hello mad neighbors

Written By james, reedsburg wi on Wednesday, December 18, 2013

Crutchfield Customer Review (What's this?)

  • "Coolness Factor"
  • Build Quality
  • Ease of Use
  • Sound Quality
  • Value

clean bass

Pros: small,powerfull

Cons: angle of wire bolts speaker + both next to each other same for the - speaker wire ports


Written By Baha, Athens Ga on Wednesday, December 11, 2013

Crutchfield Customer Review (What's this?)

The only thing that I can compare it to is dynamite. They are both small, very powerful, and way under rated! Running one JL 10" sub rated at 300 watts rms and have to turn the gain way down and bass boost off. Could very easily run another one. Sound quality is great and lots of tuning capabilities. Would purchase again in a heartbeat!

Pros: Small strong and clean sounding

Cons: N/A

Great amp regardless of the price

Written By MPohio, Central, Ohio on Thursday, December 05, 2013

Crutchfield Customer Review (What's this?)

This amp really surprised me!! I paired this up with my alpine Type R 8" sub. A little more power than my amps require, but that is a good thing and it works darn near perfectly together!! Stays cool, easy to install and doesn't take up too much space.

Pros: Has subsonic filtering, stays cool, price compared to others. Plenty of controls to help you hit the sweet spot.

Cons: None

Mtx Amo

Written By Anonymous, Germany on Thursday, November 28, 2013

Crutchfield Customer Review (What's this?)

A small amount with big sound I'm satisfied. Thanks

great little amp

Written By DaveP, kansas on Tuesday, October 29, 2013

Crutchfield Customer Review (What's this?)

Great amp for the price.It is very well built produces good bass even though it is paired with some older subs.It was installed in my nephews car so I haven't got to listen to it much.But it sure put a smile on his face.

Pros: very good input and output terminals,compact size,amp adjustments,and build quality

Cons: none so far

Great Amp!

Written By Doug, Lodi, CA on Monday, October 21, 2013

Crutchfield Customer Review (What's this?)

Installed to power an MTX Sub in a 2001 Dodge Dakota Quad-Cab. Easy installation, small and compact, excellent power and really drives the Sub!

Pros: Great power for the money. Small and compact for installation almost anywhere. Clean clear power.

Cons: None yet.

Solid build, compact, good power

Written By Scott, Nashville, TN on Friday, August 23, 2013

Crutchfield Customer Review (What's this?)

This amp is even smaller than you expect once getting it in your hands. However, while the footprint is small, it still is over 2 inches high and is quite heavy. Connections are all solid and the look is very clean. Appears very well built, for the price it is massively overbuilt. Power output is as advertised and it seems to run well under continuous load - doesn't get too hot.

I initially hooked it up to a shallow sub with very low sensitivity and it was underwhelming. However, substituting a pair of more traditional 10's it proved the limitation was the sub, not the amp. It pounded the 10's! Looks like if I stick with my current, self-imposed space restrictions I will need to either add a second shallow 12 or switch to a couple traditional 8 inchers that will make much better use of this amp's power. Bottom line - an incredible deal for the price and just a very nice amp overall.

Pros: Size, build quality, power and installation flexibility

Cons: None so far

Big Power Small Package

Written By Nathanial, Plant City, FL on Wednesday, August 14, 2013

Crutchfield Customer Review (What's this?)

I got two Alpine Type E's and chose the Thunder500.1 to power them. This amp packs a big punch even with the bass turned down. The amp have an amazingly clean exterior that against a light grey background just pops.

Pros: Big Power. Compact design. Easy to install.

Cons: Non yet.

Great value

Written By telekaster, San Diego, CA on Friday, July 12, 2013

Crutchfield Customer Review (What's this?)

I'm using it to drive a JL CP108LG-w3v3 subwoofer/enclosure. It's a great match. This is one of the best values on the market when you shop for comparable amps.

Pros: Great price. Small size. Good power.

Cons: The optional accessory external bass control (EBC) is no good at all. All the adjustment is within the first 10% of knob travel, then it's FULL BLAST past that point. I purchased and returned it to MTX after testing it out. I went with an RCA-based gain control. The full range of the knob is usable with that unit. The amplifier itself is great.

Big wattage in a tiny package

Written By BlakeY, Madisonville, Ky on Friday, July 05, 2013

Crutchfield Customer Review (What's this?)

Bought many many amps in the past and this thing should be put up next to the best. The price is deceiving and the pictures even more. This amp is tiny, but the footprint it leaves is huge. Currently pushing a 12" pioneer premier spl 3000 in the bass bunker sub box thats also here on crutchfield and man does it pound. Only thing it needs is a bass remote included.

Pros: Small size, price, wattage output, sound

Cons: No bass remote


Written By David g, Tn on Tuesday, July 02, 2013

Crutchfield Customer Review (What's this?)

Small but packs a good punch

Pros: Size,power

Cons: No fuse

small amp but does it's job!!

Written By truc, orange county, ca` on Friday, June 28, 2013

Crutchfield Customer Review (What's this?)

i was surprise how small this amp was. i hook the amp to my (2) kickers cvr 800 total rms and it slaps! this amp produce clean bass.

So far so good

Written By Anonymous, Farley, ia on Friday, June 28, 2013

Crutchfield Customer Review (What's this?)

Nice power for the price

Pros: Small, powerful , reasonably priced

Cons: Speaker terminals could use a better connector

big power small package

Written By Ed, Washington coast on Wednesday, June 26, 2013

Crutchfield Customer Review (What's this?)

Great bang for the buck for sure.. Amp is compact but still cranks out the power. I am pleasantly surprised, great deal.

Pros: compact size fits under seat, clean power. less connectors needed, wires plug right into amp.

Cons: can't see any seems i got more than what I paid for.

Powerfull little amp

Written By 1badawg, Akron Oh on Friday, June 21, 2013

Crutchfield Customer Review (What's this?)

Ordered this for a friend who wanted me to put a system in his Jeep Wrangler that " is loud enough to hear with the top down and clear enough to enjoy". And oh ya, take as little space as possible. Was able to mount this under the steering column and wow. Great power to pair of Boston Acoustic 10's in a custom box behind back seat.

Pros: Small size, great power.

Cons: Wired remote not included


Written By Seajdilla, Edmonds, WA on Tuesday, June 11, 2013

Crutchfield Customer Review (What's this?)

I installed it about two weeks ago and I've had nothing but great sound.. My last amp would get to hot and cut out ALL THE TIME, this MTX stays cool and pumpin that bass!!

Pros: Price, Size, Power,

Cons: None

Big sound in a small package

Written By Brant C, Woodstock Ga on Tuesday, June 04, 2013

Crutchfield Customer Review (What's this?)

I put this amp to a polk audio 10 and wow.It shakes the whole car with the gains turned down.I would recommend is amp to anybody looking for a lot bang for the dollar.

Pros: Small,doesn't take up a lot of room.powerful

Cons: none


Written By GeorgeE, Mobile, AL on Tuesday, May 28, 2013

Crutchfield Customer Review (What's this?)

Small, easy to mount, but a powerhouse... pushing one 15" sub, it hits Hard! not using near the potential of this amp yet. no worries about upgrading with this little powerhouse.

Pros: Small... Lots of Boom... Runs Cool...

Cons: none

MTX Thunder500.1

Written By Williams, Las Vegas NV on Tuesday, May 21, 2013

Crutchfield Customer Review (What's this?)

Good little amp. Currently running two 10" Kenwood KFC-XW10's. Granted, the subs are rated for more than the amp can produce but it makes the subs pound hard. I have the new Kenwood KDC-X797 head unit and they both pair up pretty good. The amp is strong. It gets pretty warm on me when I have the music turned up and may have shut off on me once but I am not sure if that is what happened cuz it hasn't happened since then. I have done the Big 3 upgrade on my Honda Civic with 4 awg cables and with the volume up loud I do get the headlights to flicker a little bit on my 80 amp alternator. So... it's not drawing a terrible amount of power.

Just got the EBC bass control to control the bass with a remote knob rather than through the head unit (that's annoying) but haven't hooked it up yet. Just adding this in to let you know that it offers this feature.

You may be able to find a better price for the amp than from Crutchfield, but that is not to knock Crutchfield, they stand behind their products 110% and the Customer Service is worth the extra $.

For a low cost bang for your buck subwoofer amp for your small stereo system I would definitely recommend this amp for sure.

Pros: small, good power, loud, good price. It's MTX and I have always liked MTX amps.

Cons: None yet

Lil Beast

Written By Reginald, Texas on Thursday, May 16, 2013

Crutchfield Customer Review (What's this?)

Lil giant

Pros: Small and full of power

Cons: None


Written By RFaber, Montana on Tuesday, May 14, 2013

Crutchfield Customer Review (What's this?)

nice amp, so far it stays cool while pushing a 12" sub woofer at 2ohms. Hits hard!!!!

Pros: easy install, small size fits under seat

Cons: None

MTX Thunder500.1

Written By Boscorilious, Laveen, AZ on Sunday, April 28, 2013

Crutchfield Customer Review (What's this?)

I needed an mono amp to power a 12 inch Kicker subwoofer. This amp did just that. It was incredibly reasonable and easy to use/install. As a Class D amp it runs well in closed spaces within little air circulation. It's been hard at work for 2 days now and so far no complaints.

Pros: Everything about the amp is great. At this price point, not all amps give you the ability to manage bass boost, gain, LPF, or subsonic. Great power at 500W, peak 1000W, it's an amp that's hard to beat.

Cons: Instruction manual is not easy to use. Since this was my first amp/sub install, I relied heavily on youtube videos in order to tune my amp.

Don't shy away from this amp because of $$$

Written By DougB, Nashville, TN on Monday, April 22, 2013

Crutchfield Customer Review (What's this?)

So Im relatively new to Crutchfield but a friend recommended. I upgraded my daughter's vehicle factory sound system (2000 Ford Expedition). I installed a new head unit (Kenwood, awesome), 2 Polk Audio 12's, and to push the 12's I purchased this amp. OMG.....this thing absolutely pounds. I was so shocked when I installed this unit that I actually had to make sure they sent me the right amp. I wired the 12's down to 2ohm and this amp just pounds them. ITs a very clear sound, no distortion at all, and I haven't even begun to push them. I have the amp boost to 6db and likely will turn it down, I have the gain about quarter of the way up and it will blow your mind. Im telling you, if you want a setup with 10's or 12's and you dont want to spend a ton of money, you need to buy this amp.

Pros: Sound Quality Power Easy Installation Small, will fit anywhere

Cons: No fuse, but this is not a big deal. My amp wiring kit came with an inline fuse so its no big deal at all...Infact, I'm embarrased to put it as a con.

Small but powerful

Written By mroy006, Saco,ME on Friday, April 12, 2013

Crutchfield Customer Review (What's this?)

This thing is physically small so I was a bit concerned when I unboxed it. Installed it to power my Kicker CompVR 10" wired for 2ohms. Sounds just as good as my previous Kenwood 8105d amp that died on me. Also I dont notice it getting very hot at all when making it work hard.

Pros: Should fit it any application Runs Cool for small size Allen head screw type terminals

Cons: Might have been nice to have an indication light on front of unit but the one on the side is really bright so its easy to see

Not what I expected

Written By J. Acevedo, Puerto Rico on Thursday, April 11, 2013

Crutchfield Customer Review (What's this?)

  • "Coolness Factor"
  • Build Quality
  • Ease of Use
  • Sound Quality
  • Value

I bought this "little thing" to complement my setup. My audio shop told me that this things are loud.....I didn't believe them until i felt this amp moving an audiopipe 12" DVC. My little tercel was shaking!

Pros: Way too much power!!!!!!

Cons: ..............................none so far!


Written By JW, Ft Worth Tx on Wednesday, April 03, 2013

Crutchfield Customer Review (What's this?)

Great amp and good price, Very small for the power. Works great on my Kenwood 10's. 4 gauge connections. Gives you connections for 2 subs so you don't have to daisy chain them or try to stuff 2 sets of speaker wires in the same hole. Very pleased with amp will be buying another for my 12's. Just remember to buy a fuse block for it does not come fused.

Pros: Super small, plenty of power, great connections

Cons: not fused.

Big Punch - Small Package

Written By Jim K., Blues Bros. Hometown on Tuesday, April 02, 2013

Crutchfield Customer Review (What's this?)

Great size! Mounted it right to sub box. End pieces come off, I painted them to red match sub grills. Nice touch! Just make sure you sand them real good so paint sticks.

Pros: Compact

Cons: None

Hands-on research

What's in the box?

Download owner's manual

  • Mono subwoofer amplifier
  • 4mm Allen wrench
  • 2mm Allen wrench
  • Four 1/2" Self-tapping screws
  • Owner's manual (English/ Spanish/ Portuguese/ French)

Product Research



Overview: The MTX Thunder500.1 is a mono Class D subwoofer amplifier. It has aluminum heatsinks to dissipate heat generated by the amplifier. The amp produces 300 watts RMS x 1 at 4Ω and 500 watts RMS x 1 at 2Ω.

Gain: The amp's rotary gain control is continuously variable from 200mV to 5V to match the output of the source unit.

Protection Circuits: The Thunder500.1 provides protection against overheating, under voltage, and electrical short circuits.

Crossovers: The amp features a built-in low-pass crossover, with a continuously variable cutoff frequency of 40-220Hz; the crossover cannot be bypassed. Additionally, the amp has a subsonic filter to remove ultra-low frequencies, thus minimizing wasted power and protecting speakers not capable of reproducing those frequencies. It has a variable crossover frequency of 20-50Hz.

Bass Boost: The Thunder500.1's bass boost circuit is centered at 50 Hz. It can be set to 0dB, +6dB, or +12dB.

Electronic Bass Control (EBC): An Electronic Bass Control (EBC) module is available directly from MTX that allows you to adjust the bass output of the amplifier from the front of the vehicle.


Power Terminals: The Thunder500.1 features set screw terminals for power, ground and remote turn-on. The power and ground terminals will accommodate up to 4 AWG wire, while the remote turn-on terminal will accept up to 10 AWG wire. The set screws are loosened/tightened with the supplied Allen wrenches. MTX recommends the use of 4 AWG power and ground wires.

Note: The Amplifier is not equipped with an internal fuse. An external 60-amp fuse (not included) must be installed on the power wire. If the system has only this amp and a wiring kit is used that includes a fuse with a value other than 60-amps, the original should be replaced with a 60-amp fuse.

Speaker Connections: The amplifier is equipped with two pair of set screw terminal speaker outputs. The outputs are internally wired in parallel, making it easy to connect two subwoofers. Each terminal will accommodate up to 10 AWG bare wire and is loosened/tightened with the supplied Allen wrench.

EBC Port: The amp has a 3.5mm mini-jack for plugging in an optional Electronic Bass Control (EBC) module, currently available directly from MTX.


5 Year Warranty Terms: MTX products purchased on or after January 1st, 2013 carry a 5-Year Prorated Warranty with the following terms:

  • Years 1-2: Products found to be defective in materials or workmanship during the first two years will be, at Mitek's option, repaired or replaced by Mitek at no charge. The warranty period does not renew, but continues on from the original date of purchase.
  • Years 3-5: The purchase price of an item which becomes defective after the first two years and prior to the end of the warranty period will be prorated and credited toward the purchase of a new MTX product. The amount of proration is determined by dividing the original purchase price by the number of months in the warranty period (60), then multiplying the result by the number of months remaining in the warranty period.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.