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Alpine MRV-M250

Mono subwoofer amplifier — 250 watts RMS x 1 at 2 ohms

13 Reviews | 4 questions - 5 answers

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Our take on the Alpine MRV-M250

Alpine makes it a little easier to get great bass in your vehicle, especially if you drive a compact car. Their V-Power Series MRV-M250 mono subwoofer amplifier sends up to 250 watts RMS to your sub, guaranteeing some strong bass on your drive. And Alpine made this amp so small — about the size of an outstretched hand and just over 2" tall — it can fit almost anywhere.

Alpine Authorized Online Dealer

Compact powerhouse

Alpine makes it a little easier to get great bass in your vehicle, especially if you drive a compact car. Their V-Power Series MRV-M250 mono subwoofer amplifier sends up to 250 watts RMS to your sub, guaranteeing some strong bass on your drive. And Alpine made this amp so small — about the size of an outstretched hand and just over 2" tall — it can fit almost anywhere.

Thermal protection without annoying shut-downs

The MRV-M250 uses a technology called Enhanced Shutdown Performance, which rolls back the output a bit when the amp threatens to overheat from playing at its limits too long. Instead of shutting down completely, it continues playing your music, until it cools enough to return to full power.

Convenient features

A low-pass filter puts you in command of the frequencies that reach your sub, while a bass boost lets you apply plenty of low-end punch. The amp includes preamp- and speaker-level inputs, so you can install it in almost any vehicle, even one with a factory radio. If you're using the speaker-level inputs, the amp senses an incoming signal and turns itself on, eliminating the need to run a turn-on wire run back to your vehicle's receiver or fusebox. You can control the volume of your MRV-M250 from the front seat with the optional RUX-KNOB.2 remote bass controller.

Alpine MRV-M250

MRV-M250 input and control panel

Confused about impedance? Check out our article on matching subs and amps.

Product Highlights:

  • mono subwoofer car amplifier
  • 150 watts RMS x 1 at 4 ohms (250 watts RMS x 1 at 2 ohms)
  • CEA-2006 compliant
  • variable low-pass filter (50-400 Hz, 24 dB/octave)
  • variable bass boost (0-12 dB at 50 Hz)
  • Class D amp with MOSFET power supply
  • preamp and speaker-level inputs
  • Remote Sensing automatic turn-on when using speaker-level inputs
  • optional RUX-KNOB.2 wired remote level control
  • gold-plated screw terminals
  • fuse rating: 30A x 1
  • 8-gauge power and ground leads recommended — wiring and hardware not included with amplifier
  • 7-11/16"W x 2-3/16"H x 7-15/16"D
  • warranty: 1 year
  • Our 60-day money-back guarantee

Purchased this amp to power a 12" Alpine type E for a stock stereo in a 2007 Focus. Fit nicely under the drivers seat. Perfect amount of bass.

Tom, Lafayette,IN

What's in the Box:

  • Mono subwoofer amplifier
  • 30 amp ATO fuse (installed)
  • 7.5" Speaker-level input harness
  • Four 3/4" Self-tapping hex-head screws
  • Owner's manual (English/ French/ Spanish)
  • Alpine Verification Certificate
  • Warranty information
  • On-line product registration information

Featured Video:


Alpine MRV-M250 Reviews

Average Customer Review(s):

(13 Reviews)

Alpine MRV-M250

Dale from Gardendale, AL on 8/6/2017

Crutchfield Customer Review (What's this?)

Just needed little bump, that's what I got

Pros: Small

Cons: Low bump

Very good response

Kip from Cartersville, GA on 7/11/2017

Crutchfield Customer Review (What's this?)

Nice mono amp. My son built the system. Comes from a JVC double din stereo. Drives a JL Audio 8" sub. Perfect sound for us Mature fans of old rock. Sounds like my home theater system. Have always loved Alpine from way back. Very good sub. You would be surprised at the rapid response from its little amp. Enjoy.

Pros: Alpine. Good amp for the money, always have been.

Cons: You have to get the 8 guage small fork connectors from the internet. They don't have them.

Good bass for a stock system

Tom from Lafayette,IN on 5/26/2017

Crutchfield Customer Review (What's this?)

Purchased this amp to power a 12" Alpine type E for a stock stereo in a 2007 Focus. Fit nicely under the drivers seat. Perfect amount of bass.

Pros: Small size, easy to set up

Cons: Mounting ear design has counter sunk holes that require a small screw head. That limits you to a 1 1/4" long self tapping screws with a phillips head. Not long enough to go through carpet and insulation.

Great sound

Todd s from St Paul, MN on 5/25/2016

Crutchfield Customer Review (What's this?)

Powers my new system great.


Cons: None

Great Amp

Michael from California on 8/21/2015

Crutchfield Customer Review (What's this?)

This amp really gets it done. I hooked it up to a stock head unit in my 2014 Ford Fusion with 8" touch screen. I upgraded door speakers to Alpine and spliced off the back of the unit to hook up the speaker line inputs, since RCA cables are not on back of stock unit. NOTE: instructions say you can get away with hooking up just one set of speakers lines, i.e. just back doors or just front doors, however it will effect the performance. I did this at first and was not happy with the amp, but I went back and spliced in the front doors so all four input lines are being used and it is amazing how well the sub blends with the stock head unit and my upgraded door speakers. I am hooked up to a Kicker 10" ported sub that matches the amp perfectly. I highly recommend this amp for a stock head unit. no need to hook up a wire for turning on the amp it does it through the speaker level line inputs.

Pros: Great amp for the price and its performance

Cons: None

Small but powerful!

Cmgibbs from Olathe Kansas on 4/2/2015

Crutchfield Customer Review (What's this?)

This is a great amp! Comparing it to the previous models, the reduction in size is awesome! Even the large mrv500 is pretty small. This amp gives you everything you need. All the features of this amp really help you understand how to fine tune your sound. Overall really really nice amp!

Pros: Pros: -Small, due to the v-power construction -You can power all other car speakers with this, plus your sub -Adjustable low pass filter, bass boost and overall gain. -Optional bass control knob

Cons: Cons: Bass control knob is a separate purchase No internal fan cooling

Good Amp

Chris from New Jersey on 3/11/2015

Crutchfield Customer Review (What's this?)

I bought this to use in my 2015 Tucson. Have prior experience with Alpine amps, So decided to give this one a try. Its nice and compact. Unfortunately the unit received just barely made its 2 Ohm RMS power (Test sheet showed 260 Watts). My plan was to use it to power a Bazooka Bass Tube. It wasn't strong enough. I returned it. Which Crutchfield was Great at handling.

Pros: Alpine reliability, Compact size. Speaker level input. Auto Sense turn on (Speaker level input)

Cons: Not enough RMS Watts for my needs.

Alpine MRV-M250

Dan from Oceanside, CA on 2/24/2015

Crutchfield Customer Review (What's this?)

It work just fine in my Ford Ranger

Pros: Easy to installed small fit under passenger seat

Cons: None

Alpine MRV-M250

Denny J. from Franklin, Tn on 2/18/2015

Crutchfield Customer Review (What's this?)

Pumps base out of my 10" Infinity Sub perfectly.

Pros: Small enough to mount most anywhere. Easy hook up.

Cons: None

Alpine MRV-M250

Shawn from Bay Center, WA on 7/2/2014

Crutchfield Customer Review (What's this?)

Very good bang for the buck



Alpine MRV-M250

Mike K from Lake Charles, LA on 5/31/2014

Crutchfield Customer Review (What's this?)

Great amp!

Pros: Has more than enough power for my 10!

Cons: Mite be too much power

So far so good!

S Kusen from Brookhaven, PA on 9/4/2013

Crutchfield Customer Review (What's this?)

Bought this for my 2013 Civic LX, and to power a Rockford Fosgate Prime R1L-1X10 sub enclosure, just to add some bass to the stock system. No complaints, and works as desired!

Pros: lightweight, small

Cons: none

Quality Class D for a good price

BoomRattleBoom from Detroit, MI on 4/14/2013

Installed with a 8awg kit, powering a Polk Dxi108 8" sub. The birth sheet shows the amp tested @ 283 rms in the factory. With my polk rated around 180rms @ 2ohms, this is one of the best matched amps I could find. I have the bass boost off to prevent blowing the sub, and the gain is just over 1/2. It sounds clean, no odd noise, no overheating, and no issues so far. Powered on first try and have not had any issues with a few days of constant use. It could easily drive a lower power 10" or 12".

Pros: It's an Alpine, so it is flat black without lame logos all over it. Love that. Fairly cheap for a quality name brand RMS power rating is true RMS Build quality and sound is excellent for this price category. Class D, low heat Tiny in size, easy to mount or hide. No reliability issues so far, from an amp that was just released.

Cons: -No independent terminal lug for power wire. A crimped/soldered terminal is required. Had to grind my terminal down to size to make it fit in the terminal block, which is not really what I like to do. The power terminal block required smaller ring terminals than is supplied in most 8awg kits, which is the smallest gauge I would use with an amp this size and CCA wires. Not a big deal in this price category, I'm just a perfectionist. -It doesn't make me sandwiches when asked the first time.


Hands-on research

Product Research


CEA-2006 Compliant: CEA-2006 is a system of testing and measurement methods for mobile audio amplifiers. This voluntary standard advocates a uniform method for measuring an amplifier's RMS power output and signal-to-noise ratio. The criteria for measuring power uses a DC input voltage of 14.4 volts and the RMS power output is measured with 1% or less Total Harmonic Distortion plus noise (THD+N) over a frequency range of 20 Hz to 20 kHz (for full range amplifiers). Signal-to-Noise ratio is measured in weighted absolute decibels (dBA) at a reference of 1 watt into 4Ω. CEA-2006 allows consumers to compare car amplifiers and receivers on an equal basis. Using CEA-2006 criteria, the Alpine MRV-M250 is rated as follows:

  • Power Output:
    • 4Ω: 150 watts x 1-channel (<0.2% THD+N)
    • 2Ω: 250 watts x 1-channel (<0.3% THD+N)
  • Signal to Noise Ratio: 85 dBA (105 dB at rated power)

Speaker Level Input: A speaker level input harness is included, making it easier to add the amplifier to a factory radio or to a receiver with no preamp outputs. The 8-pin harness has inputs for front and rear speakers. While only two speaker inputs are necessary, wiring all four will minimize the fader's effect on the subwoofer output.

Auto Turn-on: If using the speaker level input, an automatic circuit turns the amplifier on when it senses an input signal.

Low Pass Filter: The amp is equipped with a 50-400Hz variable low-pass filter with a slope of 24 dB/octave. This being a mono subwoofer amp, the crossover is always engaged.

Bass EQ: The Bass EQ circuit provides a variable boost (0-12dB) at 50 Hz.

Wired Remote: An RJ-25 jack is provided for connecting an optional RUX-KNOB wired remote (item number 500RUXKNOB, sold separately), allowing remote control of the output level of the amplifier.


  • Battery: screw terminal; accepts spade connectors or ring terminals up to 0.35" wide
  • Remote: screw terminal; accepts spade connectors or ring terminals up to 0.35" wide
  • GND (ground): screw terminal; accepts spade connectors or ring terminals up to 0.35" wide
  • Speaker Output: screw terminal; accepts spade connectors or ring terminals up to 0.35" wide
  • Line Inputs: 1 pair of stereo RCA jacks
  • Speaker Level Input: Molex plug input for supplied 8-pin harness
  • Wired Remote: RJ-25 jack for optional wired remote

Note: Alpine recommends 8 gauge power and ground wire (minimum).

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.

Staff Reviews

Product reviews from the Crutchfield Labs

Alpine's V-Power car amplifiers are smaller than ever, and they employ smart digital technology that makes them incredibly versatile.

What are the Labs?
Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

Troy, my Crutchfield Advisor, highly recommended this amp to go with my head unit and speaker choice. [ Bryan  Oct 12, 2017 ]
Matches my sub woofer and has speaker level input that does not require remote line. [ Maverick  Jun 08, 2016 ]
Size, output, match system. [ Chris  Apr 27, 2016 ]
I like Alpine stuff [ Jeffrey  Feb 06, 2016 ]
Matched component with Alpine SWS-12D2 subwoofer speaker. [ John  Dec 30, 2015 ]
Was strongly considering the 500w model, but this is just to enhance the factory system, no need to drown everything else out. [ Rhett  Dec 14, 2015 ]

4 questions already asked

I use the auto feature through the amp turn on through my head unit and so far I haven't come out to a dead battery [ ZACHARY  Sep 16, 2016 ]
If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the settings/connections on the product and see if there may be a fix. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer. You can also post your question in our forums: Or try our online support center: [ Kenny  Sep 09, 2016 ]  Staff
I forwarded your question to an Advisor and they responded with the following: This amplifier requires 30 amps from the battery. If you would like to discuss further you can contact an Advisor directly by phone (1-800-324-9695) or online chat. [ Krissy  Apr 22, 2014 ]  Staff
this is a mono amp. you would not use it for door speakers, you would use it for a subwoofer. look at 2 channel amps. [ Jason  Apr 22, 2015 ]
For details on fit or installation please contact an Advisor by phone or online chat. They will be able to pull up your vehicle and receiver to give you the details on how to connect this amplifier. [ Jeff  Jan 10, 2014 ]  Staff