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Sound Ordnance™ M-2100

2-channel car amplifier — 75 watts RMS x 2

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Our take on the Sound Ordnance™ M-2100

by Buck Pomerantz
Sound Ordnance

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.

Win the battle for great sound in your ride. Sound Ordnance amplifiers feature tough construction, rugged looks, and a 3-year warranty, so you can enjoy the full power of your music for the long haul. Even better, you can add Sound Ordnance to your arsenal at a surprisingly affordable price.

The Sound Ordnance M-2100 2-channel amplifier deploys 75 watts RMS to each channel, giving your music plenty of firepower. Or you can bridge the M-2100 to mobilize 200 watts RMS to your sub. An adjustable high-pass filter makes sure your full-range speakers operate within their optimum range and give you the best tone possible. If you're driving a sub, the low-pass filter and a selectable bass boost allow you to control your bass barrage at will.

The M-2100 amplifier uses sophisticated power supply and output technologies to ensure clean amplification from the inputs all the way to your speakers. Special circuits protect the amp from overheating and short circuits, and a turn-on delay virtually eliminates that annoying thump when you turn your system on.

See more info on this item

Highlights:

  • 2-channel car amplifier
  • 75 watts RMS x 2 at 4 ohms (100 watts RMS x 2 at 2 ohms)
  • 200 watts RMS x 1 bridged at 4 ohms (4-ohm stable bridged)
  • variable low-pass filter (50-250 Hz, 12 dB/octave)
  • variable high-pass filter (80-2,000 Hz, 12 dB/octave)
  • selectable bass boost (0, 6, and 12 dB at 45 Hz)
  • PWM (pulse width modulation) power supply with MOSFET output
  • preamp inputs and outputs
  • speaker-level inputs
  • fuse rating: 30A x 1
  • 8-gauge power and ground leads recommended — wiring and hardware not included with amplifier
  • 9-1/2"W x 2-1/8"H x 9-7/8"D
  • warranty: 3 years
  • Our 60-day money-back guarantee

Hands-on research from the Crutchfield Labs (what are the Labs?)

Features and Specs
Performance
RMS Power Output (Watts x Channels)
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75 x 2
Peak Power Output (Watts x Channels)
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212 x 2
Power at 2 Ohms (Watts x Channels)
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100 x 2
Bridged Power (Watts x Channels)
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200 x 1
Minimum Impedance Bridged
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4
Minimum Impedance Unbridged
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2
Best Frequency Response
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12-25k Hz
THD at Rated RMS Power
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1%
Signal to Noise Ratio
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95 dB
Input Voltage
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14.4v
Features
Amplifier Class
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AB
Low-Pass Crossover Frequency
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50-250 Hz
Low-Pass Slope (dB/octave)
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12 dB/oct
High-Pass Crossover Frequency
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80-2k Hz
High-Pass Slope (dB/octave)
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12 dB/oct
Bass Boost
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0, 6, 12 dB
Bass Boost Frequency
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45 Hz
Fan Cooled
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No
Fuse Rating
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30
Speaker Level Inputs
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Harness
Preamp Outputs
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1 pair
Width (inches)
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9-1/2
Height (inches)
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2-1/8
Depth (inches)
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9-13/16
Parts Warranty
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3 Years
Labor Warranty
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3 Years
Product Research
What's in the box?

Download owner's manual

  • 2-Channel amplifier with a 30A ATC blade fuse inserted
  • Spare 30A ATC blade fuse
  • 12" Speaker-level input harness (with a 4-pin Molex plug on one end)
  • 4 Self-tapping screws (5/8" length)
  • 4 Split lock washers
  • 4 Flat washers
  • Owner's Manual

Scratch & Dent items may be missing non-essential accessories. In some cases the manufacturer's accessories have been replaced with generic equivalents.

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 open the box, verify contents, 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.

Features
Connections

Features

Power Ratings: The Sound Ordnance M-2100 is a two-channel Class AB amplifier with an RMS power rating of 75 watts per channel into 4 ohms, and 100 watts per channel into 2 ohms. The amp can also be bridged into a 4-ohm load for a power rating of 200 watts. Power ratings are measured with an input power of 14.4 volts.

Crossovers: The M-2100 is equipped with both high-pass and low-pass crossovers. You can set the low-pass cutoff frequency between 50Hz and 250Hz, and the high-pass cutoff frequency between 80Hz and 2kHz. A 3-way switch lets you select low-pass, high-pass, or full range operation. The crossovers have a 12dB per octave slope.

Super Bass: The amplifier has a bass boost switch, labeled Super Bass, to give small subwoofers more volume in the low frequencies. You can select the amount of boost with the 3-way switch: 0dB, 6dB, or 12dB.

LED Indicators: The M-2100 features two LED indicators: a green LED that illuminates when the amp is powered on, and a red LED that illuminates when the amplifier is in protect mode due to overheating or a short circuit in the speaker wire.

Connections

Removable End Caps: The end caps on the M-2100 are removable with a 3mm Allen wrench (not supplied) to make it easier to attach the power and speaker wires.

Power Connections: The power and ground connections are set screw terminals that will accommodate up to 8-gauge wire. (An 8-gauge amplifier wiring kit is recommended.) The remote turn-on terminal is a set screw terminal that will also accept up to 8-gauge wire. A Phillips-head screwdriver (not supplied) is required to tighten/loosen the terminals.

Speaker Connections: The speaker connections are set screw terminals that will accommodate up to 8-gauge wire. A Phillips-head screwdriver (not supplied) is required to tighten/loosen the terminals.

RCA Inputs and Outputs: The amplifier features a pair of stereo RCA inputs for connecting your head unit. There is also a pair of stereo RCA outputs for feeding the preamp signal to another amplifier, if needed.

Speaker Level Input: In addition to the RCA preamp outputs, the amplifier also has speaker level inputs for connecting a head unit that does not have preamp outputs. The supplied speaker level input harness has 4 bare wires on one end and a 4-pin Molex plug on the other end.

Fuses: The M-2100 features one 30-amp ATC blade fuses.

 

Product reviews from the Crutchfield Labs (what are the Labs?)

Video: Sound Ordnance Amplifiers

Video: Sound Ordnance Amplifiers

by Video Guest
 
Video: Sound Ordnance Amplifiers

Make your music sound lively and vital with a Sound Ordnance amplifier. Watch this Crutchfield video for a quick overview of what these amplifiers have to offer.

 
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Sound Ordnance™ M-2100 Reviews

Average Customer Review:

54 people say:

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Filter by rating:
5 out of 5

Worth It

Written By DaveK, Camarillo, CA on Wednesday, August 27, 2014
 
Easy to hook up , Easy to adjust and works great. Sound Ordnance delivers a lot of amp for little dollars. I'm using it to drive a single 10" 400watt Sub in a station wagon. I was planing on having dual 10" Subs back there but have changed my mind. With the Sound Ordnance M-2100 and a single 10"er, its all I need.
Pros:
EZ hook-up, EZ adjustments, plenty of power
Cons:
none
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4 out of 5

Good Sound

Written By Shanman, NC on Saturday, August 02, 2014
Crutchfield Customer Review (What's this?)
 
Good sound! Would have preferred the connector ports to accept bladed ends though.
Pros:
Good sound.
Cons:
No blade connectors allowed. Hole for wire much smaller than 8ga wire. Had to trim wire down to fit inside port.
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5 out of 5

Great Product/Great Price

Written By Anonymous, Sun Prairie, WI on Wednesday, July 02, 2014
Crutchfield Customer Review (What's this?)
 
Good quality, great price. No real issues
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5 out of 5

Awesome deal

Written By David L, CA Central Valley on Tuesday, June 24, 2014
Crutchfield Customer Review (What's this?)
 
This amp is such a great deal. The specs, compared with other brands, are such a great value, and it looks cool, which is why I bought it. But it's just the right power for a decent 10 or 12 if you're doing a simple system. It's clean and tight, works like a charm with the Sound Ordnance B12 loaded enclosure I got it for. Not too boomy, not too tight.
Pros:
Awesome value, looks cool, the brand has a great 4 channel that matches it, good power rating for a simple sub
Cons:
Only qualm is the wiring posts are at an adverse angle with the case. You can get at it with a regular #2 screwdriver, just be careful or it seems like it would be easy to strip the head of the screws. I did fine though.
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5 out of 5

Completely worth the $100!

Written By James, Traverse City, MI on Thursday, May 15, 2014
Crutchfield Customer Review (What's this?)
 
I bought this amp to power my JBL GTO938 6x9 door speakers, and it improved the way they sound so much I couldn't go back to only using the head unit for power. Went from 10w rms each to 100w rms each @ 2 ohms, and the difference is day and night. Everything worked out of box, and if it weren't for my truck it would have been an easy install.
Pros:
Works perfectly Adjustable Looks nice
Cons:
None so far
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5 out of 5

Very good amplifier.

Written By Antonio T., San Juan, Puerto Rico on Thursday, April 03, 2014
Crutchfield Customer Review (What's this?)
 
This amplifier was easy to hook up to my Porsche 944 with a Jensen radio. I put it under the case of the glove compartmentso I can reach it for adjustments. Good product for the price I paid. And the warranty of 3 years is excelent.
Cons:
None by now.
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4 out of 5

Nice Amp

Written By Anonymous, Greenville, SC on Monday, March 10, 2014
Crutchfield Customer Review (What's this?)
 
Great amp for price. Doesn't feel as well made as amps I have owned in the past. The adjustment knobs aren't flush with the side of the amp. But, overall seems to be a good amp. Fits well under drivers seat of 2007 Honda CRV EX-L. Also, speaker level inputs do not work with factory amplified system in Honda CRV. Had to buy Scosche SLC4 to get amp to work.
Pros:
Price, size.
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5 out of 5

Sound Ordnance M-2100

Written By Scott, Idaho on Wednesday, February 05, 2014
Crutchfield Customer Review (What's this?)
 
I had no idea that my previous Kicker Amplifier was sounding so bad. Out of the box this exceeded my expectations. Shipping was faster than expected and the box contained exactly what was stated. No hidden issues here which is what I have appreciated from Crutchfield since my first order many years ago.
Pros:
Great sounding, Aesthetically pleasing, well rounded 2 channel amplifier with options.
Cons:
The plate needed to be removed in order to get to the speaker/power terminals. Not enough of an issue to deduct a star as it also allows for protection of those connections. Good to understand before installing the amp in a tight location .
1 out of 1 people found this helpful
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5 out of 5

My first amp and amp install

Written By RunKen, Huntsville, al on Sunday, January 19, 2014
Crutchfield Customer Review (What's this?)
 
Worked well. Technical support was very helpful.
Pros:
Price,performance.
Cons:
A little on the big size.
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5 out of 5

Perfect Amplifier

Written By Mr B-5, Pine Hill AL on Tuesday, January 07, 2014
Crutchfield Customer Review (What's this?)
 
This amp was preferred by one of the Crutchfield associates to boost my 6x9s and he absolutely knows his stuff. The sound is so amazing.
Pros:
Easy to install
Cons:
I cant say nothing bad about it
1 out of 1 people found this helpful
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4 out of 5

Sound Ordnance™ M-2100

Written By Anonymous, pasadena ca on Monday, November 04, 2013
Crutchfield Customer Review (What's this?)
 
Sounds good easy to install great for subs
1 out of 2 people found this helpful
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4 out of 5

Sound Ordnance M-2100

Written By MarkC, Rexburg, ID on Thursday, October 17, 2013
Crutchfield Customer Review (What's this?)
 
Good amp overall. Still trying to tweak the settings to get quality sound with different types of music.
Pros:
Price and performance.
Cons:
Size.
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1 out of 5

Sound Ordnance™ M-2100

Written By Anonymous, Cedar Rapids Iowa on Thursday, July 11, 2013
Crutchfield Customer Review (What's this?)
 
Did not work right out of the box. never got a chance to hear it. Crutchfield sent me a new one that one didn't work. sent it back. now I'm on to try a different brand.
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5 out of 5

great

Written By carlos n, hawaii on Saturday, June 22, 2013
Crutchfield Customer Review (What's this?)
 
great amp my 10" sub sounds nice and loud.
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5 out of 5

Great amp

Written By Lowrey, Plano, TX on Tuesday, June 18, 2013
Crutchfield Customer Review (What's this?)
 
Great amp for the money; open box buy. Running a single 4 ohm 10" woofer, sounds better and hits harder than my older way more expensive amp. Using speaker level inputs to keep the factory head unit.
Pros:
Plenty of power.
Cons:
The speaker level input wiring harness labels do not make sense, and there is nothing in the manual about them. The terminals on the amp are labeled correctly, so don't bother to try and figure out the X, +, -, or _ on the wiring means.
1 out of 1 people found this helpful
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5 out of 5

Good bang for the buck

Written By Frank, Richmond Hill, GA on Sunday, June 09, 2013
Crutchfield Customer Review (What's this?)
 
This appears to be a well built Amp. It feels solid in its construction and the connectors are more solid then previous amps that I've had in the past. I have this amp hooked up to a infinity component system and they complement themselves nicely.
Pros:
Good connectors, Good construction
Cons:
I'd like to have a power indicator on the top so I can see it is on. It does have one on the side though... I'm picky
1 out of 1 people found this helpful
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5 out of 5

SO M-2100

Written By JimD, Tampa Bay on Monday, June 03, 2013
Crutchfield Customer Review (What's this?)
 
It's bridged to a JL Audio CS110-WXv2, and it's the perfect fit for me! Paired with a top of the line Alpine Head Unit and 45w 4 channel amp going to 4 Infinity Kappa 2 Ohm speakers, and my SUV now rocks hard! I'm totally happy with the purchase, and trust me, if I'm not, it goes back! And on sale!! Are you kidding me!! Thank you Crutchfield!!
Pros:
Sale price & 3 year warranty!! It rocks
Cons:
none!
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"Coolness Factor"
Build Quality
Ease of Use
Sound Quality
Value
 
4 out of 5

Real nice amp

Written By Steve P, Royal Palm Beach, FL on Friday, May 24, 2013
Crutchfield Customer Review (What's this?)
 
I am not an amp expert, but a friend of mine who is told be to buy this one.. I bought to power a 12" Alpine sub and it works great!!
Pros:
Price, Looks and it works well.
Cons:
Non so far.
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5 out of 5

Awesome deal!

Written By John, Kansas on Saturday, May 18, 2013
Crutchfield Customer Review (What's this?)
 
I'm 38 years old and have been purchasing and installing car audio since I was 13. I usually get rockford fosgate amps but wanted to try Sound Ordnance since Crutchfield has so much involvement with them and I've always trusted Crutchfield. This is in my sons car bridged to a 12" sub and it sounds incredible! No "thump" when he starts his car and you can't hear anything from the sub at all until the bass hits. Clean bass that is completely adjustable with the gain and low pass filter knobs. For the price I am literally amazed at this products quality and it has a 3 year warranty! I've tried low cost amps before and they never sounded like this. I usually don't write reviews but wanted to add my 2 cents because this amp really exceeded my expectations, even though I expected it to be a nice amp. But for less than $100? Wow!
Pros:
Crystal clear amplified sound with no "thump" when it starts up.
Cons:
I wish I would have tried this brand sooner.
3 out of 3 people found this helpful
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5 out of 5

Inexpensice, High Quality

Written By martinfan30, Carson City, NV on Monday, May 13, 2013
Crutchfield Customer Review (What's this?)
 
Such a great buy! Great sound, powers my 6.5 infinity kappas perfectly.
Pros:
Price, quality
Cons:
None for me
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4 out of 5

Reviews for the Sound OrdnanceT M-2100

Written By gary, Charlottesville, VA on Wednesday, May 08, 2013
 
A pretty nice little system. VERY easy to install and set up. Decent sound for the price. The switch settings on the system are nice, and I have mine accessible so that when I switch from Ipod to Radio or different equalizer settings, I can flip the switches to control the bass output. I would say well worth the money I paid. mounted in a Jeep soft-top wrangler and i only run the front speakers on the two channels so it works great to cover all the road noise.
Pros:
Good sound for the money
Cons:
A mounting bracket would have been a nice addition.
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5 out of 5

TOP NOTCH QUALITY

Written By MARLON22, PHILADELPHIA, PA on Wednesday, May 01, 2013
Crutchfield Customer Review (What's this?)
 
THIS SOUND ORDNANCE AMP IS TOP NOTCH QUALITY AND PUMPS OUT CONTINUOUS WATTAGE WITH THE BEST OF THEM. I HAVE BEEN RUNNING THIS AMP BRIDGED TO ONE CHANNEL AND IT KEEPS MY KENWOOD WP13003 12" SUBWOOFER POUNDING NON STOP! I HAVE HAD MANY AMPS OF MANY BRANDS, AND THESE SOUND ORDNANCE AMPS CAN DEFINATELY COMPETE WITH THE BEST OF THEM. AND BEST VALUE FOR YOUR MONEY, HANDS DOWN. THE ONLY COMPLAINT I WOULD HAVE OF THIS AMP, IS ALL 4 LEGS COMPLETELY BROKE WHEN TRYING TO DRILL A SCREW THROUGH THEM TO MOUNT. I DID SOME MODIFYING THOUGH, AND THE PERFORMANCE DEFINATELY OUT WEIGHS THE LEG ISSUE.
Pros:
QUALITY
Cons:
CHEAP PLASTIC LEGS
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5 out of 5

Sound OrdnanceT M-2100

Written By Darrell, Fort Mill, SC on Thursday, April 25, 2013
Crutchfield Customer Review (What's this?)
 
Love this amp. I was looking for an amp and a sub to improve the sound quality in my Toyota truck. The Crutchfield team was extremely helpful getting me the Sound Ordnance M-2100 with the SoundOrdnance powered Sub. Installation was easy, and with some adjusting I have an incredible sound. No matter if it is just low volume or I am pushing the power the sound is great.
Pros:
Easy installation. Fit under my passenger seat. Great sound
Cons:
None as of yet.
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5 out of 5

Great Amp, Great Price

Written By Steven W, New Smyrna Beach, Fl on Sunday, April 21, 2013
Crutchfield Customer Review (What's this?)
 
I've had this amp hooked up to my new door speakers for about 2 weeks now. All in all, the amp works great. Fit underneath the center of the bench seat in my 1996 Dodge Ram. The speakers get pretty loud if your playing the right type of music. Instructions on how to configure the amp were easy to understand. I got this amp on sale for $69, would have paid the normal $100 for it. I never tried any of the Sound Ordnance gear before, but i'm glad I did. I will be purchasing more of it when I need it. Thanks Crutchfield.
3 out of 3 people found this helpful
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5 out of 5

John from walton

Written By John R, Walton, ny on Saturday, April 20, 2013
Crutchfield Customer Review (What's this?)
 
Sounds better then I thought it would. I bought it for a temporary fix until I could afford a better one but the sound and price is great. I think I'm going to buy a second one.
Pros:
Great price and sound
Cons:
I don't have any cons
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5 out of 5

Great Amp!

Written By phitho, Sachse, TX on Saturday, April 13, 2013
Crutchfield Customer Review (What's this?)
 
Great Amp! Have it powering front speakers in 2011 Toyota Camry with stock radio. Replaced an older, smaller amp that started to add noice to the left channel. The only thing is there is a chirp when the amp first powers on (with head unit on or off). Not sure whether or not this is normal. Otherwise, sound is clean and full.
Pros:
Looks, specs, ease of installation, connectors, setup options
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5 out of 5

Sound Ordnance™ M-2100

Written By Anonymous, san diego ,ca on Wednesday, April 10, 2013
Crutchfield Customer Review (What's this?)
 
I have this amp pushing my 10'' mtx thunder X sub , one of the best amps I've ever bought
Pros:
Hits hard , doesn't heat up a lot
Cons:
Kinda big
1 out of 1 people found this helpful
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5 out of 5

Very happy with this amp

Written By Carmen, Richmond, VA on Saturday, March 30, 2013
Crutchfield Customer Review (What's this?)
 
Just had this amp wired to two 8" subwoofers and I'm very happy with the sound. Definitely recommend this amp to somebody who isn't looking to spend too much on their system.
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5 out of 5

Great

Written By Jared L, Indianapolis, in on Monday, March 11, 2013
Crutchfield Customer Review (What's this?)
 
Great for price.....
Pros:
Looks and sounds good
Cons:
Amp is little big
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5 out of 5

incredible amp

Written By Kaleb J W, Oklahoma City, OK on Monday, March 04, 2013
Crutchfield Customer Review (What's this?)
 
Sound Ordnance definitely makes the best amps I have used. They are awesome, plus inexpensive. I have this amp wired to my kicker ks 6.5 components in my jeep and have never been more pleased with an amp and speaker combo in my life. This is a great looking and performing amplifier. I also have a sound ordnance amp to my jl 12 inch sub, and it bangs. Would never buy any other brand of amplifier
Pros:
Performance, look, size, design, user friendly
Cons:
None
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4 out of 5

M2100 good buy for the money

Written By DK, New Hampshire on Thursday, January 24, 2013
Crutchfield Customer Review (What's this?)
 
I bought this to give a little more power to my speakers in a cruise night/show car that only gets about 500 miles of use a year. I did not want to spend a ton of money and I used this amp with a head unit that only has one set of outputs. This thing really did the trick give that "full" sound that the head unit amplifeir just could not give. The reason I did not give this thing 5 stars is very simple. The mounting holes being so deep and small through the case makes it a pain to mount if you need to predrill holes into whatever you are going to mount it too. I hope Crutchfield reviews the mounting holes and considers a different design.
Pros:
Cost Quality of sound
Cons:
Mounting holes Slightly bigger than other amps
1 out of 1 people found this helpful
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3 out of 5

ok

Written By Jason, Tampa, FL on Thursday, July 19, 2012
Crutchfield Customer Review (What's this?)
 
Bought this amp to power some JL Audio C5 tweeters. I used to have an old piece of crap amp that just didn't cut it. This was supposed to fix up the sound quality. It did have less background static and was cleaner however not satisfactory as far as the sound quality went. I decided to stop cheaping out and return this back to Crutchfield and buy a JL Audio amp. The sound quality difference was huge. This is a good starter amp, but if you are looking for sound quality... there is a reason why other amplifiers with similar power ratings cost more.
Pros:
Small Cheap
Cons:
Sound Quality
3 out of 3 people found this helpful
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3 out of 5

Large and difficult to mount, but sounds good.

Written By gjc, Buffalo, NY on Wednesday, May 16, 2012
Crutchfield Customer Review (What's this?)
 
Not a bad amp for the price. This thing is huge, much larger than most, it almost didn't fit where I was putting it. Also the mounting hole locations are through the chassis such that you can't get a drill bit onto the screw and had to use a screw driver. The hole diameter was also to narrow to use self tapping screws, I had to measure and drill then screw by hand. Kind of a pain. Once it was done it worked fine.
Pros:
Cheap, good sound, lots of features
Cons:
Large, really big, huge, enormous, difficult to mount/install.
1 out of 1 people found this helpful
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4 out of 5

Great sound and price

Written By David, Johnson City, TN on Monday, May 07, 2012
Crutchfield Customer Review (What's this?)
 
This amp has great sound and hits hard. It is better than expected for the price. I will definetly buy another sound ordinance product. The only reason it is not five stars is that the mounting feet are plastic and can break easily if in a bind or screwed down to hard. Overall great amp
Pros:
Ease of inatallation Sound Price
Cons:
Plastic mounting feet are brittle. Needed to be metal instead
1 out of 1 people found this helpful
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5 out of 5

Sound OrdnanceT M-2100

Written By Todd B, Covington, LA on Monday, May 07, 2012
Crutchfield Customer Review (What's this?)
 
I picked this amp up on sale but it is worth the everyday price. You can get a much more expensive amp that may or may not sound better but if you are on a budget this is the way to go. Buy this amp and use the money you save over the name brands to buy a better set of speakers.
Pros:
Nice size, fits under the seat of my MX5. Design looks great and hook up was easy.
Cons:
None that I can think of at this time.
1 out of 1 people found this helpful
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5 out of 5

Thump for the Buck

Written By Anonymous, Richmond, CA on Wednesday, May 02, 2012
Crutchfield Customer Review (What's this?)
 
This amp is a solid one. Can't go wrong here. I have it pushing a mtx thunder form enclosure and it sets off car alarms with this amp hooked up to it. It never gets hot to the touch and never cuts off during serious usage. Reccomend this brand for the budget friendly and performance all in one.
Pros:
Price for performance Looks variety of connection options
Cons:
Too much plastic on the outter case.
2 out of 2 people found this helpful
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1 out of 5

Did not even work..

Written By Sara, Minnesota on Monday, April 30, 2012
Crutchfield Customer Review (What's this?)
 
I had purchased this amp for my Sound Ordance B-17 sub and I don't know why but it did not work at all. I had 2 different people try and help hook it up and we could not get it to work despite doing everything right...Even when the amp's power button was lit, it was not giving any power to my sub. Probably just a faulty amp but needless to say I was disappointed and frustrated. going to look at other brands because I wouldn't trust this amp again.
Cons:
Didn't work!!
Crutchfield response on Wednesday, May 02, 2012
We forwarded this review to our Technical Support team for follow-up. Lifetime tech support comes with every Crutchfield purchase.
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5 out of 5

WOW!

Written By MTNMAD, Garkand, Utah on Thursday, April 26, 2012
Crutchfield Customer Review (What's this?)
 
I had to choose an amp based on size and price. This amp was a wise choice. Due the vehicle it went in (08) Wrangler I had to get creative as to how and where it went. The Jeep spends 6 months a year topless so I couldnt mount it directly to the floor. I used 8 corner brackets to give it a 2.5" space off the floor and used rubber groments to help reduce the vibrations. When the project was finally finished I was amazed how powerfull this amp really is. I am using it to power two 6.5" kicker subs I mounted in the sound bar. The sound it produces is awesome. It makes these subs kick out a great sound ! For the money and the quality, you can't go wrong!
Pros:
price, quality, prefomance, Warranty
Cons:
none so far!
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"Coolness Factor"
Build Quality
Ease of Use
Sound Quality
Value
 
5 out of 5

Great bang for your buck!!

Written By blaketg, Punta Gorda, Fl on Saturday, April 21, 2012
Crutchfield Customer Review (What's this?)
 
Install was relatively simple once I got the ground to work. I installed it in a 09 Silverado crew cab with the Pioneer TS-SWX251 10" shallow subwoofer. It gives the perfect amount of punch. Not overwhelming, but definitely enough to feel the bass. You really can't beat the price at 79.99, not to mention a 3 year warranty. Would recommend to anyone for sure. If your debating whether to trust the name brand, just call Crutchfield and ask about how Sound Ordnance came about.
Pros:
Price
Cons:
None at this point
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5 out of 5

Sound Ordinance M2100

Written By sstruck94, Pittsburgh, PA on Sunday, April 15, 2012
Crutchfield Customer Review (What's this?)
 
Install was quick and easy. Used to power two rockford forgate prime R1693 6x9s. Used remote output to jump to 10 inch infinity bass link. Speakers sound good and will probably get better once some adjustments are made.
Pros:
Could not beat the price.
Cons:
Had to use rubber grommets to increase the clearance underneath.
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5 out of 5

m-2100

Written By Geoff, New Jersey on Thursday, March 22, 2012
Crutchfield Customer Review (What's this?)
 
Easy install and hook up, sounds great with my jackhammer 10 inch sub.
1 out of 1 people found this helpful
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4 out of 5

M-2100 Amp

Written By Richie, Los Alamitos on Friday, February 24, 2012
Crutchfield Customer Review (What's this?)
 
Installation was straight forward. The amp provided a great sound improvement for what I need.
Pros:
Good unit and the cost was low.
Cons:
The way the amp mounts to the floor needs improvement, had to make shims to get the unit level. Shims are not included with the amp
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5 out of 5

Great Amp at great price

Written By Doug, Austin TX on Thursday, February 23, 2012
Crutchfield Customer Review (What's this?)
 
Best "cheap" amp I've EVER bought !!!
Pros:
LOTS of features for the $$
Cons:
None.
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5 out of 5

Sound Ordnance™ M-2100

Written By Leon, Carriere,Ms on Monday, February 06, 2012
Crutchfield Customer Review (What's this?)
 
great product,easy set up,and terrific sound
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4 out of 5

Cheaply made but works excellent

Written By Kyle, IL on Saturday, February 04, 2012
Crutchfield Customer Review (What's this?)
 
The amp works perfectly. I highly suggest going with this as compared to the top name brands that you will get the same effect for 50$ more. My only problem is that the mounting equipment is made of plastic tubes. They will break and fall out if you tighten the amp to the wall. So just be careful. Besides that, awesome amp.
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5 out of 5

Sound Ordnance™ M-2100

Written By Jae, Orange County, CA on Friday, February 03, 2012
Crutchfield Customer Review (What's this?)
 
Excellent amp for the money! I have it hooked up to a 10'' Rockford Fosgate and boy does that thing hit hard. I would recommend this to anyone who doesn't want to set car alarms off.
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4 out of 5

Great Amp at great price

Written By chad s, Perry, GA on Wednesday, January 11, 2012
Crutchfield Customer Review (What's this?)
 
Installed this in my Polaris ranger crew cab along with 8inch kicker sub. Can't believe how great it sounds. This was my first install and was surprised at how easy it was.
Pros:
Price and ease of install.
Cons:
I was not familiar with LPF and HPF features. Directions could have been more explanatory.
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4 out of 5

Nice unit, Nice price

Written By rd, Winona, MN on Wednesday, September 14, 2011
Crutchfield Customer Review (What's this?)
 
Bought the M2100 to replace another SO product, the under seat 8 inch sub which is still working fine in another car. The M2100 is powering 2 6" subs in the rear of a 2002 PT cruiser. Dual Bazooka tube's (from Crutchfield by the way) pound with the M2100 supplying the juice. Bass is plentiful and clean and the M2100 looks good. My only complaint is the power on/problem LED's (red & green) are not on the same end as the adjustment controls.
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5 out of 5

Sound Ordnance™ M-2100

Written By j, oh on Wednesday, September 14, 2011
 
sound ordinance is awsome gear. reliable and solid. great looks and performance. prices are awsome, and they do exactly what they claim. cant go wrong
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5 out of 5

Great Amp!

Written By Tim C, Jackson, NJ on Friday, July 22, 2011
Crutchfield Customer Review (What's this?)
 
I bought this amp to re-power the failed built-in amp of my Infiniti Basslink. I wasn't sure how well it was going to work and I am very happy I tried it. It works great! The Sound Ordnance amp gave me everything I needed for the job. Built- in adjustable crossover and 200W bridged. 3yr. parts and labor warranty gave me the confidence to choose the Sound Ordnance. Thanks Crutchfield!
4 out of 4 people found this helpful
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5 out of 5

Incredible deal

Written By BrianG, Covington, Tn on Sunday, March 13, 2011
 
I thought I'd give Sound Ordinance a try and now i am so glad i did. The amp is
compact enough for me to hide under my passenger seat and more than
powerful enough to push my Sony Xplode 12 inch sub. I am very pleased with
the bass boost and low pass filter adjustment.

This amp is perfect if you're running a single sub in a small or mid size car or
truck. I have mine in the trunk of a nissan sentra.

Thanks Crutchfield!

5 out of 5 people found this helpful
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5 out of 5

Very Solid, Clean Power

Written By Steve D, Eureka, CA on Wednesday, March 02, 2011
Crutchfield Customer Review (What's this?)
 
I purchased this amplifier to power the two Infinity 6832 coaxials in the front doors of my
Mercury Villager. I initially powered the front speakers with the on-board power from the
head unit, but felt that they needed a little more muscle to really make them shine. I'm
happy to say that this amplifier has an abundance of power and really delivers the
goods! I have the level control almost all the way down, and it produces enough clean
sound and volume to make conversation in the vehicle difficult.

I cannot say enough about what a bargain these Sound Ordnance amplifiers are! I am
using an M-4075 four channel amplifier to for the two rear Infinity coaxials and a 12-inch
Infinity Reference subwoofer in a sealed box. The system really cranks, the sound
is clean, and the bass is tight and strong.

Do yourself a favor...take advantage of the great bargain Crutchfield is providing with the
Sound Ordnance amplifiers.....and use the savings to purchase better speakers. You
won't be disappointed!
2 out of 2 people found this helpful
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5 out of 5

very satisfied

Written By mikie, boulder, co on Wednesday, November 10, 2010
Crutchfield Customer Review (What's this?)
 
i am happy i bought this amp for my sound ordnance b-17 woofer. it has a perfect match for
it and its also really cheap and reliable. it doesn't overheat and it can make my subwoofer
shoot at the max without blowing it. i would recommend for people that wants to save on
cash and find the cheapest reliable amp.
1 out of 1 people found this helpful
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5 out of 5

Sound Ordnance™ M-2100

Written By Larry, Murphysboro, IL. on Wednesday, August 11, 2010
Crutchfield Customer Review (What's this?)
 
very satisfied with the Sound Ordance amp. It replaced a six year old MTX thunder that quit working. The Sound Ordance amp performs just as well as the MTX and was less expensive.
3 out of 3 people found this helpful
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2 questions already asked

Where are the dimensions? I already have 2 other amps that I can't use because they don't fit. [ Joe  Jul 04, 2014 ]
2 answers
  • Thanks Stan! This pulled up when I did a search for an amp for my truck, but it's clearly too big. [ Joe   Jul 05, 2014 ]
  • I Hope this helps Joe P! Height (inches) 2-1/8 Depth (inches) 9-13/16 [ STANLEY T   Jul 04, 2014 ]
What's the max peak watts at 2ohms? [ christian  Mar 30, 2014 ]
2 answers
  • It's 100x2 at 2ohm [ ERNESTO   Mar 31, 2014 ]
  • If I can remember I think the installer said 300 [ HENRI L   Mar 31, 2014 ]

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For a more in-depth review and enhanced detailed information on the Sound Ordnance™ M-2100, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_777M2100/Sound-Ordnance-M-2100.html ).