Alpine Authorized Online Dealer

Outstanding audio performance — you expect it when the amp is an Alpine. Alpine's V-Power amplifiers supply the high level of performance you want without shaking loose too much of your hard-earned cash.

The versatile MRP-F250 4-channel amplifier can take on a variety of roles in your system. Drive your front and rear speakers in 4-channel mode, or switch to 2-channel mode to power a couple of small subs. Want the best of both worlds? Use channels 1 and 2 to power full-range speakers, and bridge channels 3 and 4 to power a sub. Any way you use it, this amp will impress you with its strong sonic performance.

Variable high-pass/low-pass filters let you adjust the frequency output for either full-range speakers or a sub. If you're driving a subwoofer and using the low-pass crossover, a subsonic filter eliminates inaudible, ultra-low bass notes for cleaner output.

The amp's rugged construction ensures reliable performance. A heavy machined-metal heatsink keeps the internal parts cool and distortion low. Gold-plated screw terminals resist corrosion that can degrade signal performance.

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

Product Highlights:

  • 4-channel car amplifier
  • 40 watts RMS x 4 at 4 ohms (50 watts RMS x 4 at 2 ohms)
  • 100 watts RMS x 2 bridged output at 4 ohms (4-ohm stable in bridged mode)
  • 2-, 3-, or 4-channel output
  • variable high-pass/low-pass filters (50-400 Hz, 12 dB/octave)
  • tuned Bass EQ (12 dB bass boost at 50 Hz for channels 3 & 4)
  • subsonic filter (15 Hz, channels 3 & 4 only)
  • MOSFET power supply
  • CEA-2006 compliant
  • STAR Topology (minimizes internal noise and prevents ground interference)
  • speaker- and preamp-level inputs
  • preamp outputs
  • gold-plated screw terminals
  • fuse rating: 15A x 2
  • 8-gauge power and ground leads recommended — wiring and hardware not included with amplifier
  • 11-1/4"W x 2-3/8"H x 9-9/16"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 MRP-F250 Reviews

Average Customer Review:

35 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

Alpine f250

Written By Pat, San Francisco Bay Area on Friday, March 06, 2009

Crutchfield Customer Review (What's this?)

This is a very compact amp, easy to set up and very flexable for adding to it. This combined with my 9874 head unit and Alpine 6x9 behind the seat and 6 1/2 in the kick panels of my 62 Ranchero rock, my 19 year old daughter says its too loud, how can that be???

Very pleased with this amp.

Alpine MRP-F250

Written By Ernie, Karson, CA on Monday, February 09, 2009

Crutchfield Customer Review (What's this?)

Sounds good for the price it was just right.

Graet Amp!

Written By studly, Stuarts Draft, Va on Friday, February 06, 2009

Crutchfield Customer Review (What's this?)

Great amp at a great price! I use this amp to 4 61/2" Infinity 6022s. They sound great!

Excellent Alpine Product

Written By John, California on Monday, February 02, 2009

Crutchfield Customer Review (What's this?)

Alpine does it again. I trust only two names in car stereo equipment and I made the right choice. This amp fits nicely in my trunk and performs perfectly. I would reccomend this amp to anyone who is looking for power at the right price.

Good Product

Written By Rodney, Florida on Saturday, January 24, 2009

Crutchfield Customer Review (What's this?)

This unit was recommended by Crutchfield, and it works perfectly. Some of the instructions from Crutchfield and the manufacturer conflicted with each other and made the installation slow up, but after careful study I was able to figure it out, the manufacturer instructions are the ones to follow. Crutchfield might want to check into that.

Alpine F250

Written By Pablo, Florida on Friday, January 23, 2009

Crutchfield Customer Review (What's this?)

I am very satisfied, the quality of sound if just wonderful, I was able to
connect this amp with Alpine components speakers, you can hear hiden
sound yo've never heard before in the music you hear every day. 40W is
enought power for me, the technical support from crustfield is very helpful,
they were able to guied me step by step for the conection, thanks
Crustfield, I will buy from you again!!!

I liked it so much, I bought another one

Written By Michael, Akron, OH on Thursday, January 22, 2009

This is a great amp. I bought one last Sept. 08 and installed it in my regular cab S-10, along with an Alpine MRP-450 mono amp. driving a 12" Kicker enclosed truck sub. I have this amp wired to my Infinity 6.5 ref. door speakers, (old 4 ohm.) with a ref. tweeter on one channel and a set of Boston Acoustics S75 4 x 6 in the dash and another set of tweeters on the sail panels of the door. The sound is so detailed and this amp has muscle; heat isn't even an issue; even driving it to the pins for hours, it's barely warm. If you get a chance, snatch one of these up before they're gone. I did, just to have an extra one. Maybe, my girlfriend will get a surprise when she turns her on her car stereo on her birthday!

Alpine ROCKS!

Written By Sir, Pa. on Wednesday, January 21, 2009

I got this amp for Christmas and installed it a few days later so I have had some time to listen since the install. All I can say is WOW! This amp has really made a difference. I have an 06' F150 SuperCrew with an Alpine CDA-9883 head unit and Infinity Reference 6822CF's in the front doors and Infinity Kappa 682.7cf's in the rear doors. (All of which was purchased from Crutchfield.) The sound was good before but now that the amp is in, the sound is that much more clear and the bass is tighter as well. I can't even listen to the stereo turned up all the way now. Since my system is a 2-ohm setup, I am able to take advantage of the extra 10 watts per channel. I also took some extra time to run 14ga. speaker wire to all of the speakers from the amp for added sound quality. All and all, this is an excellent amp for the money and the system that I have. I highly recommend it to anyone that wants a little extra kick in their pants!

Should You Buy This TINY Amplifier?

Written By cma, Annapolis, MD on Tuesday, December 30, 2008

Crutchfield Customer Review (What's this?)

OMG Yes!

A year ago I purchased a pickup truck and unfortunately the new Dodge Ram stereo is far below the factory Alpine and Bose systems I have in other cars. So I embarked on a journey to improve the audio. I thought it would be as simple as getting a nice head unit (Pioneer AVIC D3) and upgraded door speakers (Boston Acoustic SX95 and SX65s).

Wrong! To my dismay, the upgraded head unit and speakers did not sound as "complete" as the factory Alpine or Bose units in my other cars. I drove around for a year, never really satisifed with the sound and always tweaking. My biggest complaint was that I could never get it to sound good at lower/moderate volumes.

The Alpine F-250 is both a subtle and amazing improvement at the same time. The system has the same "voice", but all frequencies can now be represented at the same time. I can have a nice tight pounding mid bass without hiding the higher frequencies. I no longer feel I need a sub.

Additionally, the sound processing options in the AVIC are now useful, without turning the sound to mud.

This amp exceeds my expectations and I would recommend it for anyone with a 4-channel co-ax system. Don't mess around with your head-unit's built in amplifier; it is not enough! This is _plenty_ of clean power if your speakers have decent sensitivity.

Alpine Power on Mazda 5 Sport

Written By islandreamer, Virginia Beach, VA on Monday, December 29, 2008

Crutchfield Customer Review (What's this?)

Installed this Alpine MRP-F250 on a 2006 Mazda 5 Sport for very good reasons. Upgraded the speakers thru Crutchfield with Kenwood KFC-C6882ie 6"x8" 3-way speakers a few months ago and decided with this amp updgrade while on sale and for its reputation. The speakers made a good difference but the amp made the icing on the cake so to speak. Clean, clear and crisp. The high's were so up there that I had to trim the treble down 3 notches. Had to keep the Gain settings just a tad above normal. The amp radiates very little heat and looks great with the blue power on light. Shipping was extremely fast and customer service is always "par exellance".

Clean, Clear Power - Excellent Value

Written By Ronald, Chicago, IL on Thursday, November 06, 2008

Crutchfield Customer Review (What's this?)

I recently installed an Alpine MRP-F250 in my 2008 Subaru WRX. I'm
feeding it from an Eclipse CD3200 head unit and using it to power my mids
and highs. I'm also using an Alpine MRP-F450 mono bass amp for the lows.
I've had a number of different amplifiers over the years (Rockford, PPI,
Orion, Alpine, etc.) and I have to say that the MRP-F250 is a very solid
amp. It's super clean and quiet, easy to install and packs a surprising
amount of punch for the price. The built in adjustable crossovers are very
flexible, allowing for full-range, high-pass or low-pass. The crossover point
is adjustable via an easily reached screw and allows for any value to be
selected in its range (e.g. - not just a few fixed choices, 80Hz, 100Hz, etc.
like on some other amps in this price range). The crossover settings can
also be set seperately for the front and rear channels. This adds versatility
to the amp. For a nice starter system, two of the channels can be set to
high-pass and used to the power the front and rear mids and highs, while
bridging the other two channels and setting them to low-pass to power a
sub. Later on, you can add a seperate bass amp and use all four channels
on this amp for mids and highs while gaining fader control. This is a really
sweet sounding, versatile amp - especially for the bargain price. It can be
used in a variety of system configurations and can grow with your system
over time. Very impressive little amp!

Very Nice

Written By Owen, Long Beach MS on Sunday, November 02, 2008

Crutchfield Customer Review (What's this?)

Ordered a a sound system through crutchfield for a suburban. Have this amp on 4 Alpine SPS-17C2. Sounds it. will continue to use crutchfield in the future.

Awesome at minimum!!

Written By Joe, Charlotte, NC on Friday, October 31, 2008

Crutchfield Customer Review (What's this?)

I put this amp in my godson's '79 Porsche 911 SC after having installed a Porsche head unit from a 2002 Boxster. After installing some speakers in the doors prior to installing this amp, the sound quality was good, but not great. Installing this amp and some Infinity Kappa 4x6 speakers (a plate) in the rear made the sound come alive. I really recommend this amp. I've attempted this same configuration on one of my Porsches using the OEM Porsche amplifier, but the outcome was not nearly as good as with the Alpine.

The Fat Ladies' Singing

Written By Mardaireus, Deep South on Saturday, October 18, 2008

This amplifier was applied to my speakers recently and the sound difference is night and day. It performs phenomenally, while getting the most out of the speakers. I absolutely adore this amp and would definitely purchase it again.


Written By rick, Georgia on Saturday, October 18, 2008

Crutchfield Customer Review (What's this?)

Just installed this amp to power a sub in my f-350 sounds great.

Matching amps=great sound

Written By Michael, Akron, Ohio on Friday, October 17, 2008

Crutchfield Customer Review (What's this?)

I really like this amp. A LOT! I already owned the Alpine MRP-M450 Mono amp. running a Kicker CompVT 12" pre-loaded sub. At first, I was driving the other speakers with another brand amp. rated at about the same power, but it doesn't compare with the power and sound quality of this amplifier, which I have running a pair of older Infinity Ref. 6 1/2's and two pairs of Infinity 1101 tweeters. The detail of the tweeters is spectacular with this amp. If your an electric guitar fan, this combo is for you. Also, by using two matching amps, it seems like everything is in perfect harmony. The sub isn't over-powering the rest of the music, in fact, you can't tell the sub is there if you don't know it's there. For example, before when there was a real low base drum hit, you felt it from the sub. Now, it feels like the 6 1/2's are kicking out the sound. I'm not an expert in stereo equipment, maybe it's just that the 4-channel amp is just more powerful than the previous amp, but for me, if I build a system, I'm going to match the amps, not just by manufacturer, but by the same series. The two Alpine amps I have (MRP-M450 and MRP-F250) sound like a million bucks.

Awesome sounding powerful amp! Great price!

Written By jcool1985, Atlanta ga on Friday, September 19, 2008

Just finished up the install in my 2001 jeep grand cherokee. All I can say is
WOW! I had a sony amp for a week before switching to alpine the sony
had the same wattage as the alpine but the alpine is more powerful and
sounds a lot clearer. A night and day difference. This amp drives my alpine
type S speakers with authority and really makes them shine. Alpine must
underrate there amps because it sure seems more powerful than 40x4. Fills
my jeep with distortion free sound and will play louder than my ears can
handle. Great price and fast shipping thanks crutchfield! I installed my amp
uder the left rear seat of my jeep and it fits as long as you are willing to cut
some metal and carpet the amp will fit and the seat won't hit it.

Alpine does it again--Superb!!!

Written By Robert, Garner, NC on Monday, May 26, 2008

Crutchfield Customer Review (What's this?)

I purchased this Alpine amp from Cructhfield to go in my Dodge Dakota
knockaround truck. I have it pushing two pair of Polk speakers. One set in
the doors and one set behind the seat.

The richness and clarity of the sound reproduction is incredible. I have
always had an affinity for Alpine amplifiers and head units. I didn't want to
spend and incredible amount of money for a 12 yr. old truck i just drive
occasionally, but I did want to enjoy my music when I am in it.

This amp, gives me that opportunity. If you want a great amp at a very
very affordable price--this is definitely the way to go.

Alpine MRP-F250

Written By gil, Chicago,IL. on Sunday, April 20, 2008

Crutchfield Customer Review (What's this?)

I put this amp in my 02 corvette to power a set of alpine 6.5 door speakers and 5 1/4 alpine rear panel speakers and this amp kicks. Just the right amount of power for the size of my car. Perfect choice to go along with the highly rated alpine speakers i purchased.

Wonderful Amp

Written By Paul, Boston, MA on Thursday, February 14, 2008

Crutchfield Customer Review (What's this?)

I just had the amplifier installed in my 1988 Mercedes 190D. I have an original rebuilt factory head unit and Boston Acoustic speakers purchased from Crutchfield under the original grills. These are great 4 inch speakers made better by the amplifier. I was not looking to break my ear drums but only to refine and improve the sound. I was not disappointed. The car looks original but turn on the Becker radio and out comes this great sound. I have a rattle in the car that the dealer can't seem to take care of. Its no problem now.
I noticed that even at moderate volumes the bass pumps strong. I can feel it now. I've had to adjust the treble down a little to avoid ear fatigue. The Boston Acoustics were great without the amp. but now I notice even more details in the music. I can hear lyrics even better and the bass has improved.
A local store did the installation and did a good job.
Over all the sound is richer and fuller over the road noise.

perfect to power speakers

Written By corrado kid, Duluth, MN on Monday, January 21, 2008

I power four JL tr 650 csi with this amp and they sound great. plenty of power but not to much. very reliable. I have not had any problems at all with it.

Alpine MRP-F250

Written By Ben, Phenix City, AL on Monday, January 14, 2008

Crutchfield Customer Review (What's this?)

I used this amp with 4 Polk 5x7 coaxials and a pair of Polk 1" dome tweeters. I put them in all 4 doors of an F-150 supercrew. This amp has plenty of power. I ended up turning the gain down a bit. It has great adjustment capabilities. I bought an Alpine mono sub amp a few years ago for my other vehicle and I am now an Alpine man. It sounds great with my 8" Fosgate sub and Punch 150 amp.

Alpine MRP-F250

Written By Thomas, Marysville CA> on Wednesday, July 25, 2007

Crutchfield Customer Review (What's this?)

Should have bought it when I got the head unit and speakers.I have a 2004 Ford Ranger with an Alpine cda9830 and Infinity 6x8 speakers that I install about 2 1/2 years ago. I aways thought the head unit was enough but I was wrong.This amp is great.Brought the system to life.Amazing.I highy recomend this amp and if you are installing a new head unit and speakers, do it all at once.I just had to tear my truck apart twice now because I thought 18 watts was enough.I installed the amp under the passenger side front seat.It just made it.Had to fab a bracket as the floor was uneven. Called tech support twice and as usual the info was dead on.Thanks. Still playing with the gain but I think its set up pretty good.Sounds amazing.If you are looking to improve sound quality and not break your bank buy this amp,its great.Thanks Crutchfield

The Final Piece to the Puzzle

Written By Matt, Chicago, Illinois on Wednesday, July 04, 2007

Crutchfield Customer Review (What's this?)

2003 Chevrolet Malibu Base Model
JVC KD-G430 (and yes it does fit) Head Unit
2 Infinity Kappa 4x6 462.7cfp
2 Infinity Kappa 6x9 (minor modification to rear deck) 673.7i
1 Infinity Reference 1250w Subwoofer
Mono Amplifier Kenwood KAC-8152D
4-Channel Amplifier Alpine MRP-F250

I've had a lot of luck with this setup going as good as I could hope. The Alpine amplifier was the last piece and it was well warranted. It cleaned up the highs and seperated my mids perfectly. The Kappas sing to perfect and are not distorted even if I turn that dial all the way up. There isn't one thing I do not like about it. It's small, plenty of power, and doesn't overheat or have shut off issues, it just does what is asked and that is play my music at a painfully loud level.

Matt from Chicago, Illinois

very versatile

Written By frank, maryland on Thursday, June 07, 2007

my setup
1998 saturn sedan
pioneer deh 1900
front 6.5 seperates
rear infinty 6.5 coaxials
10" sony xplode sub

with one set of rca's from the radio i have the front 2 channels on the amp running the fronts with the high pass on the amp. i bridged the rear to channels for the sub while using the lowpass on the amp and also using the bass boost. both gains are at a little over half way. the infinty's are running off the headunit and are being faded to the front. the amp is very clean and can deliver decent bass for a sub. a word on the infinty's 6.5 there very effecicent and sound good running off the headunit. very happy with this setup, just looking for some sub volume control

WOW!!! Nice Clarity!

Written By Alan, Lakeland, Fl. on Tuesday, March 06, 2007

Crutchfield Customer Review (What's this?)

I selected this amp because I am familure with Alpines quality. I installed it along with the JVC KD-HDR1 receiver and 2 pair of Kenwood Excelon speakers in my 2001 Firebird. Cruthcfield made it all simple with the exception of running the speaker wires (I am wishing they could have done that 1 for me now). When I turned the receiver on the amp made the whole system sing with clarity. The highs and lows were more than expected from my previous experience with Alpine. Crystal clear with every note jumping with joy!!! Thank you Crutchfield for all the help and extras you sent to help me do a professional job.

Alpine MRP-F250

Written By Jen, AL on Saturday, February 24, 2007

Crutchfield Customer Review (What's this?)

My setup:
2000 Nissan XTerra XE
Eclipse CD3000 Head unit
Eclipse 6x9 (x2) rear speakers
Eclipse 5 (x2) front door speakers
Infinity 10' subwoofer
Alpine 4-channel amp
Infinity 2-channel amp

Added this to Eclipse CD3000 deck with Eclipse speakers in the front and back doors. The system sounds fantastic. Don't be afraid to turn the gain way up. Sound clarity and bass are outstanding. I was truly impressed with the difference that this all made. I paid less than $600 for a sub, sub box, 2 amps, wiring and everything else i needed to install this equipment. I'm super happy with the way this all sounds in my car. Well worth the money spent and sounds much better than what I would expect for the money I paid!!

good, clean power

Written By Matt, Greensboro, NC on Friday, January 12, 2007

MY SYSTEM: 1995 Saab 9000
Alpine CDA-9813
JL VR 5.25in component front speakers
JL TX 6X9in triaxial rear speakers
JBL GTO 1002D sub
JL e1200 mono sub amp
Alpine MRP-F250 full range amp

This amp is really clear and gets really loud. I have the gain on full and the HP filter set a 100hz. with my sub amp's LP filter set at 100hz this makes for a really nice sounding system. both sets of my speakers are rated at 60W RMS and this Alpine with it's conservatively rated 40W RMS pushes them beautifully. for good, clean sound and to make your speakers sing, I highly recommend this amp! and at just $199, it makes even more sense!

Should've Bought It Long Ago

Written By wes, Conway, AR on Wednesday, December 27, 2006

2001 Toyota Tacoma Ext Cab SR5 TRD
Kenwood Excelon KDC-X790
Pioneer TS-A6871R (in doors and rear panel)
Factory door tweeters
Alpine MRP-F250 (under driver seat)
Kenwood KSC-SW1 (under passenger seat)
Dynamat Extreme (100 sq ft - floors, doors, & panels)

Came together beautifully. GET THE DYNAMAT! Believe it or not, it is the foundation for all else; works amazingly well! Road noise is dramatically decreased. The 6x8's are loving the amp! Great bass response and super-crisp highs, although too powerful of mids can muddy up the music, so adjust as necessary. The amp is super-clean and gets those 6x8's LOUD! Often too loud for my liking, so the gain stays at half. The sub mounted perfectly under the seat and was CRITICAL for balance. It outperforms what I hoped for without upsetting the neighbors. Sometimes strains with rap, hiphop, techno, etc., but performs very well with all else. Finally, the head unit is loaded with options, including mp3 player input - 'nuff said.

If I could do it all again, I think I'd do components in the doors for add'l bass response and the tweeter upgrade (and may end up anyway). But, all-in-all, I am VERY pleased with this setup. 15+ hours of install, but completely worth it. People can't believe how great my truck sounds, and better yet: they can't see a thing! Stealth rules.

Thanks Crutchfield for all your goodies and your help!

Alpine MRP-F250

Written By Scott, Minneapolis, MN on Monday, September 11, 2006

Crutchfield Customer Review (What's this?)

Very clean sound and more than enough power for my SUV. This was installed to power my four door speakers and controlled by a Alpine 9857 HU.

The amp was a great step up from the HU amplifier.

Improved Sound!

Written By Kelvin, Reno, NV on Friday, August 25, 2006

I was having second thoughts of externally amplifying the component speakers in my car wondering if it could really improve sound quality. They used to be powered by my 18 watt RMS Alpine head unit. A friend finally convinced me that using an external amplifier can greatly decrease distortion at all volume levels. I gave this amp a chance and hooked up all my speakers to it. I was amazed how much the sound quality increased. I now hear clearer mids and better mid bass from my 6.5" speakers.

Turning the IC in Alpine head units really improves sound quality!

Alpine MRP-F250

Written By Eddie, New Jersey on Friday, August 11, 2006

Crutchfield Customer Review (What's this?)

Added this to 9857 CD deck with Alpine components speakers in the front door and 2 ways in the back doors. Crutchfield installation instructions were great. The system sounds fantastic. The only tip I have with similar speakers is don't be afraid to turn the gain way up. Sound clarity and bass are outstanding.

Good amp for $

Written By AJ, Lake Tahoe, CA on Wednesday, July 26, 2006

I got the alpine f250(40x4) about a week ago and so far so good. The sound is very good and i am glad that i got it for my boston components. The only reason i gave it a 4 and not a 5 was becasue it doesn't get very loud. Well for the price at it is worth it though. This is loud enough for me and maybe down the road i will get the f450 which is 70x4, but for now this is good enough. So if you want good quality, the ability to hear in 10 years, and not spend a fortune this amp is perfect. If you want real loud and want your neighbors to know when you are around then spend the extra $ and get the alpine f450 at crutchfield.

Alpine MRP-F250

Written By Kevin, Mechanicsburg, PA on Sunday, June 04, 2006

Crutchfield Customer Review (What's this?)

I installed an idential Alpine amp in my son's car last year (2005). It has worked flawlessly. I installed this amp in my SUV, connected to the factory stereo, with 4 - Polk db 650's. Installation was a breeze. Instructions from Crutchfield were great and the amp works very well.

Alpine MRP-F250

Written By Robert, Orlando, FL on Friday, March 24, 2006

Crutchfield Customer Review (What's this?)

Amp works great, easy to install, and good instructions.

Hands-on research

What's in the box?

Download owner's manual

  • 4-Channel amplifier
  • 8" Speaker-level input harness (with 8-pin Molex plug on one end and bare wire on the other end)
  • 2 Terminal covers
  • 4 Self-tapping hex-head screws (M4 x 20)
  • 4 Machine screws for securing terminal covers (M3)
  • Owner's Manual (English/French/Spanish)
  • Customer Care Registration card

Product Research

Inputs and Outputs


Power Supply: The MRP-F250 amplifier's power supply uses MOSFETs to convert DC battery voltage to the higher DC voltages needed for high power. It supplies positive and negative voltages around 0V, rather than around 6V as with conventional single-polarity power supplies. The result is higher power levels and a dynamic range wider by as much as 10dB.

Gain Controls: This amp has independent front and rear channel gain controls.

Crossovers: Both front and rear channels have independently selectable high-pass and low-pass variable 50-400 Hz crossovers with a slope of 12dB/octave.

Subsonic Filter: This amp utilizes a 15Hz subsonic filter to eliminate super low frequencies that can rob power and damage speakers. The subsonic filter operates only for the rear channels, and is engaged when the rear channel crossover is set to "low-pass" operation.

Bass EQ: The Bass EQ circuit provides a fixed boost of 12dB at 50 Hz for the rear channels only. The Bass EQ does not function when the amp's rear-channel crossover is set to "high-pass" operation.

Inputs: The amplifier offers both line-level and speaker-level inputs for 4 channels. The supplied speaker-level input harness allows you to connect this amplifier to a receiver without preamp outputs, either aftermarket or factory.

Line Outputs: This amplifier has a pair of non-fading stereo RCA line outputs. You can use these outputs to daisy-chain another amplifier without having to run additional signal cables from the receiver.

Terminal Cover: The amp comes with two plastic covers that protect and insulates the RCA, power, and speaker connections. Four supplied machine screws attach the cover to the amplifier.

Inputs and Outputs

Left Side Of Amplifier:

  • GND (ground): Gold-plated terminal strip, 0.35" wide
  • Battery: Gold-plated terminal strip, 0.35" wide
  • Remote: Gold-plated terminal strip, 0.35" wide
  • Speaker Outputs: Gold-plated terminal strips for 4 speakers, 0.35" wide

Right Side Of Amplifier:

  • Line Inputs: 2 pairs of gold-plated stereo RCA jacks
  • Line Outputs: 1 pair of gold-plated stereo RCA jacks
  • Speaker Level Input: Molex plug input for supplied 8-pin harness

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.