Give your audio system a healthy dose of power with Alpine's MRV-F340 multi-channel (55 watts RMS x 4) amplifier.

The unstoppable power of this Alpine V12 Series amp comes from the massive transformers and fast MOSFET power supplies. Extra-large capacitors deliver additional current when needed to fuel musical peaks. The amps are built using Alpine's STAR Topology design to greatly reduce internal noise, keeping the signal clean so that your speakers can perform better.

The internal Bass Engine® provides a subsonic filter and built-in crossovers for trimming frequencies for maximum efficiency. The top-mounted controls are conveniently hidden and protected by a flip-up top cover. Likewise, your cables are concealed under the front cover, which can be removed to save space.

Details:
  • 55 watts RMS x 4 at 4 ohms
  • 65 watts RMS x 4 at 2 ohms
  • 130 watts RMS x 2 in bridged mode
  • 2-, 3-, or 4-channel output
  • Tri-way capable (Tri-Way crossover required)
  • requires 10-gauge power and ground leads — wiring and hardware not included with amplifier
  • Bass Engine® features:
    • variable 30-400 Hz high-pass/low-pass crossovers, 12 dB/octave
    • rear channels have a subsonic filter at 15 Hz
  • MOSFET power supply
  • STAR Topology (minimizes internal noise and prevents ground interference)
  • speaker- and preamp-level inputs
  • preamp outputs
  • oversized power and ground connections
  • gold-plated screw terminals
  • top mounted controls with cover
  • detachable front cover
  • blue power LED
  • 10-3/8"W x 2-1/2"H x 12-3/8"D
  • 1-year warranty

Product Highlights:

  • 55 watts RMS x 4 at 4 ohms
  • 65 watts RMS x 4 at 2 ohms
  • 130 watts RMS x 2 in bridged mode
  • 2-, 3-, or 4-channel output
  • Tri-way capable (Tri-Way crossover required)
  • requires 10-gauge power and ground leads — wiring and hardware not included with amplifier
  • Bass Engine® features:
    • variable 30-400 Hz high-pass/low-pass crossovers, 12 dB/octave
    • rear channels have a subsonic filter at 15 Hz
  • MOSFET power supply
  • STAR Topology (minimizes internal noise and prevents ground interference)
  • speaker- and preamp-level inputs
  • preamp outputs
  • oversized power and ground connections
  • gold-plated screw terminals
  • top mounted controls with cover
  • detachable front cover
  • blue power LED
  • 10-3/8"W x 2-1/2"H x 12-3/8"D
  • 1-year warranty

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.

Hands-on research

What's in the box?

Download owner's manual

  • Stereo amplifier with one 30-amp blade fuse and attached control panel cover
  • 1 Terminal cover
  • 1 End cap
  • 2 End cap mounting brackets
  • 2 Hexagon head screws
  • 1 Molex harness for speaker-level input
  • 2 Pieces of double-sided tape
  • 2 Self-adhesive cushions
  • Four 11/16" Sheet metal screws
  • Four M4x14 Self-tapping screws
  • Two M4 Hexagon head screws
  • One 3/32" Allen wrench
  • One 1/16" Allen wrench
  • 3 Small insulation boots
  • 1 large insulation boot
  • Owners Manual
  • Customer Care Registration/Survey
  • Warranty sheet
  • Certificate of power output
  • Note on wiring

Product Research

Features
Controls
Inputs and Outputs
Specifications

Features

V12 Amplifier: This amplifier is part of Alpine's V12 series of amplifiers.

STAR Topology: Alpine's unique STAR (Signal Transit for Accurate Response) Circuit PCB design provides a single common ground for all amp sub-blocks, preventing ground interference and minimizing internal noise.

Bass Engine: Bass Engine is a set of functions which help provide you with more control over your system in order to tailor the sound to your personal tastes.

Verification Certificate: The amplifier comes with a certificate that informs you of the per channel RMS output of the particular amplifier. It lists the model number, serial number, test date, and the test conditions (voltage, impedance).

Sub-sonic Filter: The sub-sonic filter is used to filter out low frequencies that you cannot hear but can "rob" power from the amplifier. The sub-sonic filter on this amplifier affects the rear channels only, and the crossover point is fixed at 15Hz.

Built-in Variable Electronic Crossover: The built-in low-pass/high-pass crossover is adjustable from 30 to 400Hz with a slope of 12dB/octave.

Protection Circuitry: The protection circuitry guards against accidents and undesired operation. Included are Over-voltage and Thermal overload.

Controls

Top of Amplifier: The amplifier has a metal hood that flips up to reveal the control panel. The control panel consists of the following controls:

  • Front and rear variable gain controls: these rotary controls allow you to match the input sensitivity of the amp to the particular source unit you are using
  • Front and rear frequency control: these rotary controls allow you to adjust the crossover frequency from 30Hz to 400Hz
  • Crossover mode selector switch: let's you select high-pass, low-pass, or full-range operation for the speaker outputs
  • Input channel selector switch: allows you to select between 2-channel, 4-channel, and summed input options
  • Subsonic filter: lets you turn the subsonic filter on or off

Inputs and Outputs

Front of Amplifier: 

  • Battery (+12 V): gold-plated screw terminal that will accept up to 8-gauge wire or a spade up to 0.355" wide
  • Remote (turn-on): gold-plated screw terminal that will accept up to 8-gauge wire or a spade up to 0.355" wide
  • GND (ground): gold-plated screw terminal that will accept up to 8-gauge wire or a spade up to 0.355" wide
  • Speaker Output: 0.332" wide gold-plated terminal strips for channels 1-4
  • RCA Input: two sets of gold-plated RCA line input jacks
  • RCA Output: gold-plated RCA line output jacks
  • Speaker-level Inputs: Molex plug input for included harness

Specifications

RMS Power Rating (measured at 14.4V):

  • Per Channel Into a 4-Ohm Load: 55 watts x 4
  • Per Channel Into a 2-Ohm Load: 65 watts x 4
  • Bridged Into a 4-ohm Load: 130 watts x 2

RMS Power Rating (measured at 12.0V):

  • Per Channel Into a 4-Ohm Load: 35 watts x 4
  • Per Channel Into a 2-Ohm Load: 45 watts x 4
  • Bridged Into a 4-ohm Load: 90 watts x 2

Note: Minimum impedance is 2-ohms stereo.

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.

Alpine MRV-F340 Reviews

Average Customer Review:

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Amazing amp

Written By Tito953, Reisterstown, MD on Friday, August 30, 2013

One of the best amps I've ever bought great looks easy to work with and is way underrated has more power than you think!

Pros: Easy to use, stylish, powerful

Alpine MRV-F340

Written By Mike, Chicago, IL on Sunday, March 20, 2005

Crutchfield Customer Review (What's this?)

This is a really good amp and a good value for the money. The only criticism I have about it is that the dricetions are difficult to follow. Other than that, it sounds great and has a stylish look!

Get everything you’ll need to enjoy your new Alpine MRV-F340

You'll need an amp wiring kit to install your new amplifier, as wiring is not included.
Patch cables take the music from your stereo to the amplifier. Most amp wiring kits don't include them.
Have your new amplifier put in by a qualified professional in your area.
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EFX 2-Channel RCA Patch Cables

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EFX 2-Channel RCA Patch Cables

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EFX 2-Channel RCA Patch Cables

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