RP-150.4AB | 1,000 Watt 4-Channel Car Amplifier

370 Reviews

Current Price:$219.99
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The Skar Audio RP-150.4AB is a powerful, efficient, and highly reliable four channel class AB full-range car amplifier. Ideal for powering an entire aftermarket sound stage in a vehicle, this amplifier packs some serious punch with its conservative RMS power rating of 250W x 4 channels. It packs the power that will allow you to get loud and let your speakers come alive. Featuring a high-speed MOSFET power supply, premium grade internal components, as well as 4-way protection circuitry, the amplifier will operate at the highest levels of performance for hours on end safely.
With a depth of adjustable user controls such as the gain, LPF, HPF, crossover, and bass EQ, this amplifier is extremely versatile and can be used in so many applications. These advanced user controls will allow you to dial your sound in exactly as you want for perfect clarity, whether running active components or speakers with in-line crossover networks.
The class A/B circuitry design of this model allows it to amplify your audio signal with maximum clarity, all while being extremely efficient. Features large 4 gauge power and ground input terminal connections for maximum current flow.
Product Info
General Specifications
Multi-channel Car Amplifier
Fuse Rating
120 Amp
High Speed MOSFET Power Supply
Damping Factor
Amplifier Width
Bass EQ (Boost)
Yes (0‚+6 dB‚+12 dB)
Output Channels
RCA Line Output
Turn-On Circuit
Soft Turn-on Circuit
Working Voltage
8.5V - 16V
Amplifier Height
Amplifier Length
Tri-Mode Capable
Frequency Response
20Hz - 20kHz
Built-in Crossovers
HPF / Full-Range / LPF
RMS Power at 2 Ohms
250 Watts x 4 Channels (14.4v)
RMS Power at 4 Ohms
150 Watts x 4 Channels (14.4v)
Efficiency at 4 Ohms
Protection Built-in?
Yes - 4-Way (Thermal‚Voltage‚Speaker‚DC)
Power & Ground Inputs
4 Gauge
Signal-to-Noise Ratio
105 dB
Low Level Input (Gain)
6V - 0.2mV
Low Pass Filter (Variable)
50Hz - 500Hz
High Pass Filter (Variable)
20Hz - 5kHz
Power & Protection Indicators
Yes - LED Indicators
RMS Power at 4 Ohms (Bridged)
500 Watts x 2 Channels (14.4v)
Remote Bass Knob & Cable Included
Channel 1/2 Crossovers
Low-Pass Filter
50Hz - 500Hz
High-Pass Filter
20Hz - 5kHz
Crossover Multiplier
Crossover Type (Switchable)
High-Pass Filter / Full-Range / Low-Pass Filter
Real World Amplifier Dyno Test Results
Dynamic (Peak) Power at 2 Ohms
297 Watts x 4 Channels (14.48v)
Dynamic (Peak) Power at 4 Ohms
183 Watts x 4 Channels (14.4v)
Certified (RMS) Power at 2 Ohms
248 Watts x 4 Channels (14.4v)
Certified (RMS) Power at 4 Ohms
154 Watts x 4 Channels (14.4v)
User Manual
User Manual (PDF)
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Customer Reviews


Based on 370 reviews

  • Big Skar Power
    Reviewed on 9/21/2020 by Roger
    Verified Buyer
    Not disappointed with skar 1st time I've used them based on price and YouTube amp dyno vids double run of 1/0 and 10 farad cap in my 2016 sho factory 200 amp alt 2 rp-150.4 on 4x s
  • 2005 Crossfire Install
    Reviewed on 7/7/2020 by GERALD
    Verified Buyer
    great product
  • RP-150.4AB.....1,000 Watt 4-Channel
    Reviewed on 1/13/2019 by rebelliondog
    Verified Buyer
    Installed this amp today.....absolutely no complaints so far. I have it powering a set of Infinity Kappa Components.....loud and clear. This is a very powerful amp and sounds ver
  • Finishing The System
    Reviewed on 5/23/2022 by Tom
    Verified Buyer
    I love this amp I can't wait to hear it
  • G20 Van
    Reviewed on 11/17/2020 by Brian
    Verified Buyer
    Super responsive. Clear and comfortable.
  • Well Worth It.
    Reviewed on 10/5/2020 by Hook
    Verified Buyer
    Skar Audio At There Best As Usual. I Couldn’t Say Anything Negative About Anyone Of Skar’s Products. My Advice To Anyone Who Is Currently Looking For Loud Music Or A Decent Project
  • RP-150.4 AB Is The Best For Entry Level
    Reviewed on 7/29/2021 by Alejandro
    Verified Buyer
    Bought this amp two weeks ago and installed in one day. Running four FSX-65s and four SPX-T 1” tweeters. Two of each per door. They sound mad clean and LOUD! By all means I was imp
  • Rp-150.4ab
    Reviewed on 4/26/2021 by kenneth
    Verified Buyer
    Can’t say anything but good thing about this amp plays loud and clear and puts out good power
  • Garage Stereo, Made From All Car Stereo.
    Reviewed on 4/22/2021 by DDaniel
    Verified Buyer
    Haven't done one of these in a while, but a customer wanted it. Skar equipment sounds pretty solid. This thing sounds like a club or concert in your garage. Very powerful Bass, Mid
  • Amp For Highs And Miss
    Reviewed on 8/20/2020 by Dontay
    Verified Buyer
    This amp is hella powerful I have it in my ford excursion entire system skar Audio I’m skar for life now
  • Barely Fit
    Reviewed on 2/27/2022 by Jason
    Verified Buyer
    awsom amp. sounds verry clean and smooth. loud. but it barely fit under my seat.
  • One Week In.
    Reviewed on 7/9/2021 by Sebastian
    Verified Buyer
    So far so good, only using 2 channels atm but its been pretty solid no issues yet.
  • It’s About To Get LOUD
    Reviewed on 7/5/2021 by Nicholas
    Verified Buyer
    A little project I’m working on. Original 1970 Monte Carlo SS 454 equipped with nothing but SKAR AUDIO, down to the speaker wire. Will be adding another amp for the VX4-ST’s and of
  • Excelente
    Reviewed on 10/2/2020 by daniel
    Verified Buyer
    Compacto potente excelente amplificador
  • Got My Highs Screaming
    Reviewed on 8/31/2020 by Isaiah
    Verified Buyer
    I finally put this amp onto my highs and mids and boy did they wake up. Very happy with it.
  • They Work
    Reviewed on 3/13/2020 by glen
    Verified Buyer
    Bought 1 for front doors and 1 for rear. Bridge mode gives me lots of clean power with headroom for speaker changes.
  • Living Loud
    Reviewed on 12/17/2019 by Aaron
    Verified Buyer
    Love skar audio affordable sound with great quality...
  • Two RP150.4AB And A RP2000.1D
    Reviewed on 11/26/2019 by Garrett
    Verified Buyer
    Read and watched a bunch of reviews on the skar RP series amplifiers and saw great reviews I decided to give the economical amps a try. These amps did not disappoint, powering 4 Cr
  • Great Amp With Quality Sound
    Reviewed on 3/14/2019 by Allen
    Verified Buyer
    This amp has great power out put but the sound quality was what stood out the most. Running a pair of fsx 6.5in amd 8in on it and it woke them right on up while delivering top qual