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Alpine MRV-F300

4-channel car amplifier — 50 watts RMS x 4

Item #: 500MRVF300

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23 Reviews

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Compact powerhouse

Alpine was thinking about versatility when they built their V-Power Series MRV-F300 4-channel amplifier.

  • In 4-channel mode, it delivers 50 watts RMS to each of your car's front and rear speakers, making for some sweet sound on your drive.
  • You can also run this amp in 3-channel mode, powering a subwoofer with 150 watts RMS while driving a pair of full-range speakers with 50 watts each.
  • Or, if you need a good amp for bass, you can switch the amp to 2-channel mode and send up to 150 watts RMS each to a pair of subwoofers.

You can always find a place for this amp in your system, and Alpine made this amp so small — 40% smaller than the previous model — it can fit almost anywhere.

Thermal protection without annoying shut-downs

The MRV-F300 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

High- and low-pass filters put you in command of the frequencies that reach your speakers, while a bass boost lets you apply some extra 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 back to your vehicle's receiver or fusebox. If you're a tweaker, you'll appreciate the end-piece terminal covers that can be snapped in and out without the need for any tools.

Alpine MRV-F300

Alpine MRV-F300 input and control panel

Note: Sorry, Crutchfield cannot ship Alpine products to Guam or Puerto Rico.

Product Highlights:

  • 4-channel car amplifier
  • 50 watts RMS x 4 at 4 ohms (75 watts RMS x 4 at 2 ohms)
  • 150 watts RMS x 2 bridged output at 4 ohms (4-ohm stable in bridged mode)
  • CEA-2006 compliant
  • variable high- and low-pass filters (50-400 Hz, 12 dB/octave)
  • selectable bass boost (+12 dB at 50 Hz) on channels 3 & 4
  • MOSFET power supply
  • preamp and speaker-level inputs
  • Remote Sensing automatic turn-on when using speaker-level inputs
  • gold-plated screw terminals
  • fuse rating: 40A x 1
  • 8-gauge power and ground leads recommended — wiring and hardware not included with amplifier
  • 8-1/4"W x 2-3/16"H x 7-15/16"D
  • warranty: 1 year
  • 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.

Alpine MRV-F300 Reviews

Average Customer Review:

23 reviews
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Great buy

Written By Garrett, Austin, TX on Tuesday, October 06, 2015

Crutchfield Customer Review (What's this?)

This amp was perfect for what i needed. It has more than enough power and fit great underneath the passenger seat of my 2015 jeep wrangler.

Pros: Great size, awesome power, plus the harness adapter saved a lot of headache when hooking up to a stock head unit

Cons: None

Alpine MVR

Written By Alpine amp, Florida on Wednesday, September 02, 2015

Crutchfield Customer Review (What's this?)

I have always upgraded every car stereo that I have ever owned. This amp was easy to install and also easy to tune. I have it hooked to the factory head unit in a 2015 Tacoma. The amp is pushing 4 Polk 6 1/2" and 2 Polk tweeters. I also added a 100 watt Bazooka tube. It really made a world of a difference. The truck sounds sweet. The amp easily fit under the front seat and packs quite a punch. I would recommend it to anyone.

Pros: The size, the power, and the ease of installation and tuning.

Cons: None

Good amp, Good price!!!

Written By ShaneT, North Carolina on Thursday, August 13, 2015

Crutchfield Customer Review (What's this?)

This is a great little amp from a reputable manufacturer. I installed this with no problem under my drivers side seat in my Tacoma DoubleCab. Plenty of flexibility for running different setups and easy tuning . I am using this amp to run Polk Audio DB 6 1/2 components up front and Polk Audio DB 6 1/2s in the rear. The setup rocks!!!! If you're looking at this amp just go ahead and buy it you won't regret it.

Pros: Cost, size, trusted name

Cons: not really any so far

Great Little Amp

Written By Mallen, Ohio on Friday, August 07, 2015

Crutchfield Customer Review (What's this?)

Very nice quality, no noise just clean sound.

Pros: Nice and small, good power.

Cons: None

Great product for the price

Written By Tom, Massachusetts on Monday, July 20, 2015

Crutchfield Customer Review (What's this?)

Picked this up to pair with a Kenwood DDX392 and the stock speakers in my 2012 Tundra DC. I was looking for something that could add a little pop to my stock speakers without breaking the bank. This is everything I needed and then some. Just adding this and the HU has made my stereo sound insanely good. I can't imagine what it'll sound like with better speakers.

I'm not as savvy as I was 20 years ago with car audio, so I can't go into specs and settings. If you're looking to add a little extra to your system, I would highly recommend this unit.

Pros: Small footprint Easy installation Price

Cons: None yet


Written By Lee L, Nebraska on Friday, July 17, 2015

Crutchfield Customer Review (What's this?)

Can not beleave the Sound Quality. Loud and clear.??

Pros: Awesome and would recommend it to anybody . Well worth the price. Sound is so much better with amp the just radio & everyone should use amp with there radio it just sounds so much better that way!

Cons: None

Alpine MRV-F300 Reviews

Written By Joe M, Florida on Monday, June 29, 2015

Crutchfield Customer Review (What's this?)

easy hook up, sounds great

Awesome Amp

Written By kevinT, Wyoming on Monday, June 22, 2015

This is an excellent Amp, fits under my seat. The sound is clean and powerful. Much Much better than my previous amp. Well worth the price. Have had it in my car for a year. Have the amp set at about 40%. The it is clean at any volume. I would highly recommend it!!

nice amp

Written By shredhead1080, Maryland on Monday, June 01, 2015

Crutchfield Customer Review (What's this?)

This is a very nice amp, does the trick, sounds good, and was easy to install. Caution, if you use larger than 8 gauge wiring, it will not fit in the terminals so you'll need a gauge reducer which Crutchfield does not sell. Make sure you get a good quality wiring kit. Lots of companies lie about the gauge of wire they are selling so watch out. Alpine themselves do not sell a wiring kit unfortunately. When installing, use bare wires no spade connectors etc. other than with the power wire itself, where I thought you get a more solid connection since it is higher gauge.

The way I used this was to hook up a set of separates for the front and use the other two channels bridged for a sub. In my case the sub was a single 4 ohm speaker (Bazooka tube) rated right at 150 watts like the amp is. I did not use the high or low pass because the head unit has this functionality. You do not want to set the crossover points on both the amp and the head unit as it could introduce distortion at the crossover frequencies.

If you are looking at Crutchfield's site and thinking the price is higher than other resellers, know that there are counterfeit goods out there and also that there may be B stock or refurbished masquerading as new. Best bet is to stay with an authorized Alpine reseller such as Crutchfield.

Pros: sounds great, priced right, Crutchfield provides good tech support if you need it.

Cons: none I can think of

Impressive Little Amp

Written By K, Brokenfridge, Colorado on Tuesday, May 12, 2015

Crutchfield Customer Review (What's this?)

At the suggestion of the crutchfield rep, I paired this amp with some db571 speakers and am pleasntly supprised with the results.

Pros: Much smaller than previous generation amps, good clear sound that doesn't distort when you crank the volume, infact it gets painfully loud arount 13-17 on my pioneer head unit

Cons: Doesnt make toast

Alpine MRV-F300

Written By Anonymous, Ashburn, VA on Monday, May 04, 2015

Crutchfield Customer Review (What's this?)

I used this amp to power 4 Rockford fosgate midrange speakers. It fits perfectly under my driver seat and isn't noticeable at all.

Alpine MRV-F300

Written By mrk, Nevada on Monday, April 27, 2015

Crutchfield Customer Review (What's this?)

I have installed many amps over the years, this is by far the easiest to install! If that were not enough, the amp is incredible! Very versatile, nice set of filters. To keep it very short and sweet this amp also sounds as clean and potent as any other amp I have ever used. Fine product. Highly recommended.

Pros: Very small foot print. Way more power than expected! Nice built in x-over and gain controls.

Cons: Yeah amp is that good!!!

Great Sound, Small Space

Written By Fern&o, Aliso Viejo, CA on Friday, April 24, 2015

Crutchfield Customer Review (What's this?)

I had little space for an amp but wanted big sound for. This amplifier was perfect. Sounds great and doesn't run hot. Which allowed me to tuck it under the trunk board near the spare tire.

Pros: Don't need much space. Sounds great. Lots of power.

Cons: None I can think of.

Great Amp!!

Written By SheldonC, Arizona on Monday, March 30, 2015

Crutchfield Customer Review (What's this?)

Great Amplifier!! Installation was a little involved but took me about a day to complete. Works great

Alpine amp

Written By Charles, Salem, OR on Sunday, March 29, 2015

Crutchfield Customer Review (What's this?)

This amp is awesome.

Pros: Easy to hide. Easy to install.

Alpine MRV-F300

Written By Steve, North Carolina on Wednesday, March 25, 2015

Crutchfield Customer Review (What's this?)

This amp fits perfectly under my 2013 ford escape's rear seat for a clean look. It provides sufficient power to my 4 speakers, for a clean & rich sound.

Pros: Easy to Install, inclusion of speaker wire inputs in addition to RCA

Cons: None noted so far

Great amp

Written By drews, va on Friday, January 02, 2015

Crutchfield Customer Review (What's this?)

Easy to install. Clear directions.

Great Product

Written By Anonymous, NJ on Monday, September 15, 2014

Plenty of power. Goes louder than you care to listen to. Performs great at all volumes and music styles.

Alpine MRV-F300

Written By Anonymous, herndon pa on Wednesday, August 20, 2014

Crutchfield Customer Review (What's this?)

seems like a nice amp so far

Pros: easy hook up like the way it turns on thru the speakers

great amp for the price

Written By Anonymous, langhorne, PA on Saturday, March 29, 2014

Crutchfield Customer Review (What's this?)

For the price it is a great simple 4 channel amp. Takes ups little room in my jeep wrangler under my rear seat. doesn't over heat easily. Puts enough power to all of my speakers(Polk) and gives them more clarity and base

Pros: Price, size, performance, resistance to over heating

Cons: None that I can think of see or hear

MRV-F300 Surprisingly powerful

Written By Protechnician, Winchester, CA. on Thursday, February 27, 2014

When I un-boxed this amp I'll admit that I was dubious about the power rating. Now all I can say is WOW! I have it's older brother (MRP-F300) installed in my wife's car and that amp is great (I have it running all 4 of her speakers and the sub-woofer) and her system sounds awesome! The MRV-F300 amp is almost 1/2 the size of the MRP-F300 but I thinks it's actually a bit more powerful. The power output seems to be constant over the entire frequency range. Don't shy away from the class D in the description. It is a digital amplifier and the sound is incredible. It actually overpowers my Alpine S-Type 12 inch sub (channels 3 and 4 bridged to 150w RMS) when compared to the Sony XM-1S dedicated mono sub amp that I was using before. Still tuning my system but I'm very happy with this unit and I'm sure you will be, too.

Pros: 1. Very small form factor (~8"x8"). 2. Seems to have plenty of power (even for a 12" Alpine type S sub-woofer in a sealed box). 3. Power output seems to be constant over the entire frequency range. 4. Digital amplifier = great sound

Cons: None


Written By DLW, Arlington, TX on Sunday, January 12, 2014

Small. Clean. Easy to install. Plenty of power. I've got this amp powering a set of Boston Acoustics Pro 5.5s and 6.5s. Although these speakers can handle as much as 400 watts rms, this amp does enough to get them PLENTY loud AND clean. It fits under my seat and doesn't even warm up at highly sustained volume levels. Entry level amp? I'd like to think not!

Pros: Size, more power than advertised, nice design

Cons: Wish I had some, but I'm satisfied with what I got

alpine amp

Written By ron p, bremerton, wa on Monday, June 24, 2013

Crutchfield Customer Review (What's this?)

easy to install, works great. instructions very clear even for a beginner

Pros: small compact and versitile

Hands-on research

What's in the box?

Download owner's manual

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

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-F300 is rated as follows:

  • Power Output:
    • 4Ω: 50 watts x 4-channels (<0.08% THD+N)
    • 2Ω: 75 watts x 4-channels (<0.1% THD+N)
  • Signal to Noise Ratio: 81 dBA (98 dB at rated power)

Bridgeable: Both the front and rear sections of the MRV-F300 are bridgeable, so it can be used as a 4-channel, 3-channel, or 2-channel amp.

Note: When bridging the amp, Y-adapters should be used to feed identical signals the channels to be bridged together.

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.

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

Controls: The front and rear sections of the amplifier (labeled Channel 1/2 and Channel 3/4) have independent gain and crossover controls. Channel 3/4 also adds a Bass EQ switch:

  • Channel 1/2:
    • Gain: rotary dial; continuously variable from 200mV-4V using the preamp inputs or 500mV-10V using the speaker level inputs
    • Crossover Mode: three position switch; Off (full range), High Pass, or Low Pass
    • Crossover Frequency: rotary dial; variable from 50 Hz to 400 Hz
  • Channel 1/2:
    • Gain: rotary dial; continuously variable from 200mV-4V using the preamp inputs or 500mV-10V using the speaker level inputs
    • Crossover Mode: three position switch; Off (full range), High Pass, or Low Pass
    • Crossover Frequency: rotary dial; variable from 50 Hz to 400 Hz
    • Bass EQ: two position switch; On/Off; adds +12dB boost centered at 50 Hz


  • Battery: set screw terminal; accepts up to 8 gauge wire
  • Remote: set screw terminal; accepts up to 8 gauge wire
  • GND (ground): set screw terminal; accepts up to 8 gauge wire
  • Speaker Outputs: four pair of set screw terminals; accept up to 10 gauge wire
  • Line Inputs: 2 pair of stereo RCA jacks
  • Speaker Level Input: Molex plug input for supplied 8-pin harness

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.

Product reviews from the Crutchfield Labs

Alpine made their V-Power amps 40% smaller for 2013, so they'll fit in more places than ever. Plus they employ some smart technology called Enhanced Shutdown Performance, which rolls back the output...

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