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Alpine MRP-F300

300W V-Power Series 4-Channel Class AB Car Amplifier

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List price $239.95

$149.99

with warranty

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  • V Power Series 4-Channel Class AB Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 50 watts x 4 chan.
    • 2 ohms: 75 watts x 4 chan.
    • Bridged, 4 ohms: 150 watts x 2 chan.
  • Max power output: 150 watts x 4 chan. approx.
  • Pulse width modulated (PWM) MOSFET power supply
  • LED power indicator
  • Tuned Bass EQ (0-12 dB bass boost at 50 Hz)
  • STAR Circuitry (minimizes internal noise and prevents ground interference)
  • 4/3/2 channel operation
  • Speaker-level inputs
  • Non-fading preamp RCA outputs
  • Over-current, over-voltage, and thermal protection circuitry
  • Thermal management control
  • Discrete preamp stage
  • Dual sided glass epoxy PC board design
  • Continuously adjustable gain control
  • Gold-plated RCA level inputs
  • Gold-plated screw terminals
  • Variable high-pass filter (50-400 Hz, 12 dB/octave)
  • Variable low-pass filter (50-400 Hz, 12 dB/octave)
  • Subsonic Filter (18 dB at 15 Hz)
  • CEA-2006 compliant amplifier
  • Frequency response: 20-20000 Hz
  • 8-gauge power and ground wiring is required for installation. Contact us for information regarding a discount on select amplifier kits when purchased together with this amplifier.
  • 1-year SonicElectronix.com warranty

Alpine products are warranted solely by Sonic Electronix, Inc. under the same period and terms as the original Alpine warranty. Sonic Electronix is not an Authorized Alpine Dealer and Alpine requires all merchandise purchased by Sonic Electronix customers to be returned solely to Sonic Electronix. Alpine products are also covered by our Standard Return Policy for returns on exchanges or refunds within 30 days from the date of purchase.

Product History:

Alpine MRV-F300 thumbnail
(newest, current model)
Alpine MRP-F300 thumbnail
(previous model, replaced by Alpine MRV-F300)
Alpine MRP-F250 thumbnail
(previous model, replaced by Alpine MRP-F300)

Power Specifications - Full Range Channels

RMS Power @ 4 ohms

The RMS power rating is the measure of continuous power that an amplifier can output, or a speaker can handle. It is the most accurate depiction of real, continuous power that the industry has so far.

If the final impedance of your speakers or subwoofers equals 4 ohms, this is how much power this amplifier will supply at that ohm level. The higher the RMS wattage, the more clean and loud your music will sound.

50 watts x 4 channels
RMS Power @ 2 ohms

The RMS power rating is the measure of continuous power that an amplifier can output, or a speaker can handle. It is the most accurate depiction of real, continuous power that the industry has so far.

If the final impedance of your speakers or subwoofers equals 2 ohms, this is how much power this amplifier will supply at that ohm level. The higher the RMS wattage, the more clean and loud your music will sound.

75 watts x 4 channels
Bridged RMS Power

Bridging refers to combining two channels on an amplifier to create one channel with double the voltage and an increased power output. A 2-channel amplifier will bridge down to 1-channel and a 4-channel amplifier can bridge to create 2-channels. An amplifier is most commonly bridged to drive a subwoofer.

Remember, once you bridge two channels down to one its final impedance will be 4 ohms unless otherwise specified. This rating lists the RMS power created once an amplifier is bridged.

150 watts x 2 channels
Peak Power Output
This form of power rating refers to the maximum amount of power an electronic device can handle or output in an instant without damage occurring. Often times this maximum is achieved during a brief musical burst, such as a drum accent, or low bass hit.

Some manufacturers display peak power ratings on the face of their products to increase the appeal to consumers. The RMS power rating is more accurate, and we recommend using it for product comparison.

150 watts x 4 channels

Amplifier Specifications

Amplifier Series
This designates the series of the amplifier. Many amps are available in a litany of different wattage and channel configurations, but maintain consistent features throughout the product line.
Amplifier Class

An amplifier increases the power of the signal being fed to it by taking energy from its power supply and matching the signal but increasing its amplitude. Amplifiers use many different methods for converting these electrical signals and have been categorized into classes.

Class A/B: Greater than 50% of the input signal is amplified while the other percentage is “off”. These amplifiers have a small amount of current flowing through the output transistors all the time which almost eliminates crossover distortion. Class A/B has great sound quality but is not as efficient as class D. These amps are most commonly used to drive speakers.

Class D: Also known as switching amplifiers, class D amps have output transistors that are completely turned “on” or “off”. This means that when the transistors are on, there is almost no voltage across them but when they are off there is significant voltage but no current flowing through it which makes these amplifiers very efficient at the cost of sound quality. These amps are most commonly used to drive subwoofers.

Other Classes: You may see classes such as GH, bD, X, FD, etc. by some manufactures. These amplifiers tend to be either class A/B, D or a hybrid of the two but with improvements to their designs that can make them more efficient or offer better sound quality.

AB
Number of Channels
Each channel on an amplifier will power one speaker using a positive and negative cable. There are various types of amplifiers, each designed to power a certain number of speakers. Monoblock amplifiers, also known as single channel, are designed to power one or more subwoofers. These amplifiers often have very high power ratings. On the other hand, multi-channel amplifiers power multiple speakers, usually at lower power ratings. 2-Channel and 4-Channel amplifiers can power car speakers or low powered subwoofers. Occasionally you might see a 5 or 6-channel amplifier that can power speakers and subwoofers at the same time. The most common setup is a monoblock amp to run subwoofers and a 4-channel amp to run door speakers. Check out our Knowledge Base for more information.
4
Total Peak Power Output
The total peak power output is measured as the wattage per channel multiplied by the number of channels, and is calculated at the lowest level of operating impedance.

It is measured during a brief musical burst, such as a sudden drum accent. Some manufacturers display peak power ratings on the face of their products to increase the appeal.

The RMS power rating is more accurate, and we recommend using it for product comparison.

600 watts
Total RMS Power Output
Total RMS power is measured by multiplying RMS power per channel by the number of channels, and is calculated at the lowest level of operating impedance.

RMS power is the amount of continuous power, measured in watts, that an amplifier produces is called RMS power. The higher the RMS figure, the louder and cleaner your music sounds.

The RMS output figure is much more accurate than the peak rating when comparing products.

300 watts
Maximum Input Gauge Size
This is the largest gauge wire that will fit into the power and ground terminals of this device. The lower the gauge number, the thicker the wire is. For example, a 4 gauge wire is thicker than an 8 gauge wire and thus has higher current carrying capacity. Always do your best to get this size wire to reduce the risk of damage to your components.
8 AWG
Minimum Impedance Unbridged
The lowest impedance the amplifier will handle when it is not bridged.
2 ohms
Minimum Impedance Bridged
The lowest impedance the amplifier will handle when it is bridged.
4 ohms
THD at Rated RMS Power
The amount of change in harmonic content of the signal as it is amplified. A lower figure indicates less change and a more accurate amp. THD below 0.10% is inaudible.
1%
Speaker Level Inputs
Speaker level inputs are commonly referred to as high-level inputs and vice versa. This input type allows you to get your audio signal directly from the speaker wire in your vehicle, instead of using RCA cables. The advantage of this is factory integration, as most stock radios do not have RCA outputs to run amplifiers.
Yes
Preamp Outputs
Many amplifiers are equipped with RCA preamp outputs which pass the original music signal from the source to additional amplifiers. This is known as daisy chaining because the source connects to the first amp, and the first amp connects to the second amp, etc. The advantage to daisy chaining is you only need one 2-channel RCA cable to transfer the signal from the head-unit to the amplifier, and then one additional cable for each amp being daisy chained.
No
Built-in Crossover

A crossover is a type of filtering system that permits only certain frequencies to play. A Low-Pass (LP) crossover allows only frequencies below its setting to get through which is good in the case of some subwoofers. A High-Pass(HP) filter allows frequencies above its setting to pass through, this is normally used on speakers.

When a crossover is set to FULL it means no filtering is added and the full frequency spectrum is allowed through the amplifier. Filtering is important because feeding a speaker frequencies it cannot reproduce effectively creates distortion.

Low-pass (LP)
High-pass (HP)
High-Pass Crossover Frequency
The high-pass crossover frequency can be a fixed crossover point or a variable crossover range. A variable high-pass crossover allows you to select a specific crossover point which allows frequencies above the set crossover point to pass, while making frequencies below the set point gently or harshly roll-off, depending on the steepness of the slope.

The steepness of the roll-off slope is measured in dB/octave and refers to the rate of attenuation (lowering of volume) outside their pass bands.

50 - 400 Hz
Low-Pass Crossover Frequency
The low-pass crossover frequency is typically used for subwoofers. It can be a fixed crossover point or a variable crossover range. A variable low-pass crossover allows you to select a specific crossover point which allows frequencies below the set crossover point to pass, while making frequencies above the set point gently or harshly roll-off, depending on the steepness of the slope.

The steepness of the roll-off slope is measured in dB/octave and refers to the rate of attenuation (lowering of volume) outside their pass bands.

50 - 400 Hz
Subsonic Filter
Allows you to block (filter) ultra-low frequencies that your subs cannot reproduce.
15 Hz
Signal-to-Noise Ratio
This spec compares the strength of the signal to the level of background noise. A higher value indicates less background noise.
100 dB
Bass Boost
The objective of the bass boost is to get more kick out of your subwoofer. It is a circuit that emphasizes the lower frequencies at a given point. The bass boost should always be set first before setting the gain. This feature is known for destroying subwoofers and is commonly used incorrectly, so be cautious.
0 - 12 dB
Bass/Gain Remote
If the amp comes with a bass/gain remote you will be able to control the level of your bass from your dashboard. Typically bass remotes also include a 16-20 ft. wire for installation.
No
Fan Cooled
A great feature to have if an amp generates a large amount of heat. Cooling fans can help regulate the temperature to prevent the amp from overheating (burning).
No
CEA-2006 Compliant
Amplifiers that have been tested to meet specific standards. When a car amplifier meets these standards, you can be sure that it will be able to produce the amount of power specified by the official CEA-2006 rating. Usually, these rating consist of the following items:
  • RMS Power
  • Signal-to-Noise Ratio

This rating applies to both external car amplifiers, as well as the amplifiers inside of in-dash stereos.

Yes
Strappable
Some amplifiers can be "strapped" together in order to increase the output of a single audio channel. These amplifiers feature RCA preamp outputs, allowing you to pass the signal directly from one amp to the other to ensure consistency.

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
69%
4 Star
31%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.8
Value
4.8
Features
4.7
Design
4.6
Usability
4.9

Ronald

Kissimmee, FL

Overall
Durability
Value
Features
Design
Usability

First time installing an amp in my car, an boy this is great!

January 31, 2013

I've been using it for 4 months now and I have no complaints. It sounds great. I had it professionally installed in my Accord 98, and I hooked up a pair of Sony Xplot 6 x 9 speakers and a Full Range speaker box. When listening to music the first time, a huge change from what I had before. Tried different music styles, great sound no matter what, and even when I turn the volume too high to the point of a headache it will sound crystal clear. Today I have a very different speaker setup. This amp will give you ample choices that allow for experimentation. Until this day, I have tried them all. I changed the full range box for a subwoofer box (Two 10" Sony Xplot 1500 watts each). I tried only one of them connected in bridge mode together with the 6 x 9 pair. The performance was excellent. Powerful enough. The amp has a bass eq button that gives a powerful bass boost. Then I hooked up the two of them together with the 6 x 9 pair and it too sounded really good. After all that, I was recommended using one amp for full range and one separate amp for bass. It occurred to me why not use it for bass only. And I did. I disconnected the the 6 x 9 pair and left the amp dedicated for the subwoofer box. The full range speakers hooked up to the HU, which is an aftermarket Pioneer. Through the crossovers and other tools I shaped the sound in ways I never thought possible. The bass sounds loud and clear, it shakes and you can feel it.

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rmata

St. Charles, IL

Overall
Durability
Value
Features
Design
Usability

Great little amp...but it finally kicked the bucket i think.

June 23, 2012

Ive been running this for roughly 3 and a half years now. It was in my blazer, sending 50w @ 4 ohms to each door. In my lancer, i ran a 3 way active setup off the head unit, so the signals are crossed over in the HU, no x-over unit needed (love my 9887), before they are even sent from the HU to the amps. It is really nice having the 9887, changing crossover settings, time correction, and level of EACH of the 6 drivers you can connect it to (assuming you stick to 1 per channel) independent of one another. Im not here to talk about the 9887 though, but thats what my source unit is. In my lancer, i run 3 way active up setup, Peerless 7s in each door, and CDT 1" silk dome tweeters in the sail panels, nothing in the rear doors, so 1 ch of the amp per driver (50 to each mid and tweeter :) (we're not counting the sub, its not part of my front stage, its in my trunk). This amp sounded great, when i first put it in my blazer 3 years ago, it was a night and day difference form running off the HU to running off the amp, so much more power, but more importantly, SIGNIFICANTLY cleaner. This is a great little amp. I think mine finally died today though, after 3 long years of daily abuse. It has made a few long distance journeys from Chicago to Stillwater Oklahoma (10-13h depending on traffic) with this thing on full tilt almost the entire drive. The sound this thing puts out is hard to beat for the price. Im contemplating my one that just died with a new one.

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Michael

Griffin, GA

Overall
Durability
Value
Features
Design
Usability

Nice budget-friendly amp

April 19, 2012

Very pleased with this amp. I am running 2 pairs of 2 ohm infinity speakers and it sounds great at 75 watt RMS. Runs fairly cool too.

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Paul

port charlotte, FL

Overall
Durability
Value
Features
Design
Usability

Great amp

December 30, 2011

I have been running these amps for a few years. I bought my first in early 08 for one car running 8 infinity speakers off of it. Then bought the same for my dads truck powering 4 infinity speakers a couple months later then got another in summer 09 for my other car. I have 3 of these they've been used hard powering highs and mids for years and never had a single issue. My favorite 4 channel out. I have never tried it on subs so I don't know how it performs there, but for highs and mids its super clear and with infinity speakers the amp runs at 2 ohms per channel so your fade and balance works like it should and you pull peak power out of this amp. It's amazing all of mine are still running strong every day. The sound is absolutely incredible.

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Buc Nasty

Detroit

Overall
Durability
Value
Features
Design
Usability

Solid choice

October 17, 2011

This amp is well built. For the money, it is a very nice sounding amp. Its not flashy, but it sounds good. Alpine has higher end gear but you get good performance, a great name, and solid reliability at a fair price. This may not sound like a ringing endorsement, but I would recommend this to a friend.

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kurtis

Vidor, TX

Overall
Durability
Value
Features
Design
Usability

Alpine MRP-F300

June 1, 2011

This amp is running my 2 door speakers and my 2 rear speakers in my car running at 50 rms each. I couldnt be more pleased. The amp only gets warm to the touch when i run the volume on high for long periods of time, but any amp will do that when pulling that much juice. I love this amp.

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Joe

Lititz, Pa

Overall
Durability
Value
Features
Design
Usability

Awesome amp

March 9, 2011

I'm powering Type G Alpine 6.5"s and 5.25" off this amp, and they sound great. Very clean, very clear sound. I'm using this to support my subwoofers, and the sound is very precise amidst the bass coming from the rear. Small amp, and it stays relatively cool despite lengthy playing sessions. Good bang for your buck.

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Abigail

Temple, TX

Overall
Durability
Value
Features
Design
Usability

great quality

March 4, 2011

Loved the Alpine amp, sounds great in my car. I would recommend to anyone in the market for a lower output amplifier.

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ssurfman

French Polynesia

Overall
Durability
Value
Features
Design
Usability

GOOD AMP.

March 11, 2010

I bought this amp 6 month ago and i am very happy about it. Good sound quality with a lots of power for the size.

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patrick

ohio(?)

Overall
Durability
Value
Features
Design
Usability

great

January 2, 2010

i had this hooked up to a set of alpine 6.5" replacements and alpine 6x8" replacements and never had any distortion with my alpine deck and my highs could be heard for a 1/2 mile down the road

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Tony

Moorpark, CA

Overall
Durability
Value
Features
Design
Usability

Nice Sound

July 27, 2009

Nice amp and fits under front seat!

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Dale

Milwaukee, Wisconsin

Overall
Durability
Value
Features
Design
Usability

Great amp, Great price

June 6, 2009

I have this amp powering four tsa-6882r Pioneer speakers, which are 6x8's. The amp is giving 50 watts to each speaker. I have no problems at all with the amp. I have had the amp on for long periods of time and it runs very cool.It powers the speakers very well and they shake my mirrors lolol.This amp is great for the price and i would reccomend it.

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kb

o high o

Overall
Durability
Value
Features
Design
Usability

Great product

May 26, 2009

I have this wired at 2 ohms to Infinity Kappa 682.7s and it woke them up quite a bit. I have crystal clear sound that can be heard from 2 houses down the street at 75% volume. I think this amp might be a tad under rated too.

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jay

Canada

Overall
Durability
Value
Features
Design
Usability

instant improvement

May 5, 2009

Pretty good sound for the price. This is a good amp if you want an amp that will do the job, but yet won't cost you that much.

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tundra08

Zebulon NC

Overall
Durability
Value
Features
Design
Usability

Great Amp

March 26, 2009

This is a great amp, I have it pushing 2 Alpine type r 6x9's, and two Alpine type R 6 1/2 in speakers. The sound great, and the amp is very clear, and I can turn it all the way up with no distortion, it really added alot of clarity and depth to my system. It also has a small footprint, and runs extremely cool. Highly recommend

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Vance

Hillsboro, OR

Overall
Durability
Value
Features
Design
Usability

Great amp!!!!!

March 2, 2010

This amp is awesome!!! I have it hooked up to a set of pb 6.5 components in the deck, some pb 6.5 coaxials in the front doors, a set of pb 3.5 coaxials in the dash, AND a JL 10 in a sealed box in the trunk. It heats up a little but this amp runs them flawlessly!!!!! The speakers run crystal clear and very VERY loud. The sub thumps very nicely, in fact my neighbor came out and yelled at me because his living room windows were rattling (from a ten in a sealed box!!!!!!!!!). I have no problem turning my kenwood headunit all the way up without anything distorting at all. This amp is only rated for minimum 4 ohms Independence but so far i've had no problem running just 2 ohms to each speaker. Overall probably the most underrated amp out there that i've heard. Way worth the price!!! BUY IT!!!!!!!

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Accessory Tools and Products

Accessories added

StreetWires ZN1K-08 8-Gauge Wiring Kit

Great wire for your awesome new amp! Don't forget the RCA's!

Your Price $16.95

NVX XBG3PK 1/0 Gauge OFC Big 3 Upgrade Kit

Comes with everything you need to upgrade your power and ground wire.

Your Price $79.99

Kicker Big 3 Package 1/0 Gauge Big 3 Upgrade Kit

Get all you need including wire cutters to upgrade your power and ground wire.

Your Price $149.99

Belva BBG3KT CCA 1/0 Gauge Big Three Kit

Features everything needed to upgrade factory power and ground wire.

Your Price $39.99

Universal Remote Level Bass Control

Controls bass level and frequency via RCA/Interconnect connectors on any amp.

Your Price $7.99

Small Universal Remote Level Bass Control

The Scosche RLC is a smaller universal bass remote that connects via RCA inputs.

Your Price $11.99

StreetWires FB8

8 Gauge Firewall Bushing

Your Price $6.95

NVX XDBU4 - Top of the Line!

Distribution Block with Two 1/0 or 4 AWG Inputs and Four 4 or 8 AWG Outputs

Your Price $17.99

Professional Installation for your Car Power Amplifier

Covers labor charges through our professional installer network.

Your Price $89.99

NVX XIV45 4-Channel RCA Audio Interconnect Cable

5 Meters (16.4 ft.) 4-Channel RCA Audio Interconnect Cable with Dual Twisted Pair Hyper-Flex Technology

Your Price $23.99

Kicker K-Series RCA Interconnect Cable

19 ft. of 4-Channel RCA cable with dual twisted-pair conductors, hyper-flex technology, and gold plated contacts for maximum signal transfer!

Your Price $29.95

StreetWires ZN7 RCA Interconnect Cable

16.4 ft. of 4-Channel RCA Cable with hyper twist construction, oxygen free copper, and precision machined tips.

Your Price $59.99

Kicker 4-Channel RCA Audio Interconnect Cable

4 Meters (13 ft.) 4-Channel K-Series RCA Audio Interconnect Cable

Your Price $19.95

NVX XWS1225 12 AWG Speaker Wire

25 ft. of True 12 Gauge 100% Copper EnvyFlex Speaker Cable/Wire

Your Price $39.99

NVX XWS1625 16 AWG Speaker Wire

25 ft. of True 16 Gauge 100% Copper EnvyFlex Speaker Cable/Wire

Your Price $13.99

Belva BBSW127 12 AWG Speaker Wire

12 Gauge 7 Meter (23 Ft) Speaker Wire (CCA)

Your Price $14.99

Belva BBSW167 16 AWG Speaker Wire

16 Gauge 7 Meter (23 Ft) Speaker Wire (CCA)

Your Price $12.99

The Install Bay IB-CAP1F

True 1.0 Farad Car Audio Capacitor for up to 1000W Max

Your Price $37.99

e2 ECAP1 by Scosche - Mid-Level 1 Farad

Digital 1.0 Farad Car Audio Capacitor for up to 1000W Max

Your Price $49.99

Rockford Fosgate RFC1D - Top of the Line 1 Farad

Digital 1.0 Farad Car Audio Capacitor for up to 1000W Max

Your Price $104.99

Scosche SPL Meter SPL1000F

Handheld boomSTICK measures your SPL range from 60 to 135 dB

Your Price $21.99

AutoSound 2000 CD-102

High Frequency Test CD specifically designed for the set-up and evaluation of sound system imaging and placement.

Your Price $11.99

AutoSound 2000 CD-104

Audiophile reference series test disc for evaluation of all audio components.

Your Price $11.99

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Product Summary

Manufacturer

Model Number

MRP-F300

UPC

793276300928

Weight

8.00lbs

Internal SKU

mrpf300

Internal Product ID

12020

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Alpine MRP-F300