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Skar Audio

Skar Audio RP-75.4AB 500 Watt Full-Range Class A/B 4 Channel Car Amplifier

    • Based on 758 reviews
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Size: 500 Watt Class A/B Four Channel


Features

  • 500-Watt MOSFET 4-Channel Class A/B Power Car Amplifier
  • RMS Power at 2 Ohms: 125 Watts x 4 Channels
  • RMS Power at 4 Ohms: 75 Watts x 4 Channel
  • User Adjustable Controls: Gain, Variable LPF, HPF, Bass EQ Switch (0, +6, +12 dB)
  • 4 Way Protection Circuitry | Frequency Response: 20 Hz - 20,000 Hz
  • Signal to Noise Ratio: 105 dB

Description

The Skar Audio RP-75.4AB is a powerful, efficient, and highly reliable four channel class a/b full-range car amplifier. Capable of powering an entire aftermarket upgraded speaker system in a vehicle, 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 and sound excellence, all while being extremely efficient. Features 8 gauge power and ground input terminal connections for maximum current flow.

Item dimensions L x W x H: 19.5 x 7 x 3 inches


Voltage: 12 Volts (DC)


Manufacturer: Skar Audio


Mounting Type: Surface Mount


Brand: Skar Audio


Item dimensions L x W x H: 19.5 x 7 x 3 inches


Voltage: 12 Volts (DC)


Manufacturer: Skar Audio


Mounting Type: Surface Mount


Brand: Skar Audio


Number of Channels: 4


Output Power: 500 Watts


Specification Met: FCC


Material: Aluminum, steel, plastic


Global Trade Identification Number: 18


UPC: 760999042718


Product Dimensions: 19.5 x 7 x 3 inches


Item Weight: 7.4 pounds


Item model number: RP-75.4AB


Is Discontinued By Manufacturer: No


Date First Available: February 10, 2015


Country of Origin: China


Frequently asked questions

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View our full returns policy here.

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Top Amazon Reviews

    • šŸ”Š Unleash Pure Sound Power! šŸš—šŸŽ¶
Size: 500 Watt Class A/B Four Channel
The Skar Audio RP-75.4AB Car Amplifier delivers 500 watts of dynamic performance, perfect for powering your full-range speakers with precision. Featuring a Class A/B design, it ensures clean, crisp sound across all four channels, ideal for creating a balanced audio setup. Built for durability and efficiency, this amplifier is the ultimate choice for audiophiles ready to elevate their car audio system to perfection! šŸŽµāš” ... show more
Reviewed in the United States on December 5, 2024 by David Houck
    • I'm impressed with this amp and Skar in general
Size: 500 Watt Class A/B Four Channel
I'm really impressed with Skar, they are the only company that I know about that doesn't lie about their specs. Other companies use really good rose colored glasses for their specs. The model # for the amp I just bought for my stereo is RP-75.4AB, this is the 4 ohm spec. It actually puts out 75 watts RMS at 4 ohms on all four channels without clipping. Now that's only 300 watts total for what they call a 500 watt RMS amp, but they also spec out for 2 ohm load which is 115 watts RMS, 460 watts total. I think this amp is really intended to be used with a 4 ohm load going by the model #. My first encounter with Skar was with my Karaoke system sub amp. It's a RP-1200.1 and it really does put out 1200 watts RMS into a 1 ohm load, just like the spec says. I liked Skar so much that when I started looking for a 4 channel amp to replace my 2 McIntosh MC240s in my stereo, which I wasn't having much luck with, I thought about Skar and searched for Skar amps. I found the RP75.4AB, it's a class AB amp which I like for full bandwidth and it's still 65% efficient. My Macs also run class AB but they are only about 40% efficient plus there's the power used by all filaments which makes the actual efficiency even lower. In other words the Macs are room heaters. I just ran my stereo with the Skar amp for about an hour with good volume and the amp is barely warm. It also sounds really good, I was hoping it would sound as good as the Macs but instead I was surprised it sounded better, it was cleaner at mid and high ranges. The Macs probably need new tubes so that would explain the difference in quality, which is the main reason I bought the Skar amp to begin with, THERE ARE NO REALLY EXPENSIVE VACUUM TUBES TO REPLACE! This would have cost way more then what I paid for my new system using the RP75.4AB. ... show more
Reviewed in the United States on August 16, 2024 by Ed C
    • Great 4 channel for the price.
Size: 500 Watt Class A/B Four Channel
Review Image by Raymond Mccloud Raymond Mccloud
Review Image by Raymond Mccloud Raymond Mccloud
Bought this to upgrade my factory amplifier after replacing my radio, has been working great for over a month now with no issues and does not overheat in the slightest bit, even with it in an area with no air flow in the back of my car. Get no unwanted noise in any of the channels and gets my mids and highs as loud as I want them. Have them powering factory mid-bass and tweeters in my front doors and column, and in the rear a set of pro audio from Skar as well. Would recommend for a cheap 4 channel to anyone needing one. ... show more
Reviewed in the United States on April 26, 2024 by Raymond Mccloud Raymond Mccloud
    • 4 channel amplifier.
Size: 500 Watt Class A/B Four Channel
This is my second amplifier I purchased From this manufacturer. They are good quality. They sound good and the best thing about it. They're affordable I would recommend buying. I've had no problems with mine so Far had them for 6 months now, and I've been using them definitely purchase if you're looking for a nice amplifier for a good price highly recommend. ... show more
Reviewed in the United States on February 10, 2024 by Robbie Somers
    • Great Amp
Size: 500 Watt Class A/B Four Channel
The amp is very good. My reason for removing 1 star is because this amp did not include a bass knob even though it was pictured on the listing. I had contacted the seller and they told me the amp didnā€™t come with the knob because the amp is meant more for speakers. I understood but it still felt a bit misleading because a knob was pictured. But aside from that the amp itself is very good. ... show more
Reviewed in the United States on July 16, 2024 by Someone
    • Sounds good. Loving Skar
Size: 500 Watt Class A/B Four Channel
Review Image by Malcolm Winder Malcolm Winder
Had it in for about 6 months so far with no problems. Have it powering 4-6.5 and a super tweeter. Gets loud
Reviewed in the United States on January 17, 2025 by Malcolm Winder Malcolm Winder
    • SkarRp-75.4 powering 4 Skar 6x8's
Size: 500 Watt Class A/B Four Channel
Review Image by Chris Chris
Review Image by Chris Chris
Review Image by Chris Chris
Review Image by Chris Chris
Review Image by Chris Chris
Bought the speakers first,2 pair of Skar 6x8. Already had a Kenwood dx503 head unit. Great speaker upgrade from factory but they wanted more power! This amp delivered!! After installation and tuning the amp and head unit I couldn't ask for better sound... and for the price point, can't beat it with a stick. 5 stars from me. Thank you Skar audio ... show more
Reviewed in the United States on March 18, 2024 by Chris Chris
    • Powerful Amp, Very Happy for the Price I Paid!
Size: 500 Watt Class A/B Four Channel
Review Image by Kameron Kameron
Running 2 skar TX65 coaxial speakers on two channels and 2 skar FSX8ā€™s with crossovers to tweeters on the other two channels. Each channel wired to 4ohm so getting around 75watts each and it gets loud, too loud, hardly ever pushing it to its max. No issues with this amp at all, even after running hard for a half hour, it was warm to the touch but not very hot. ... show more
Reviewed in the United States on May 21, 2024 by Kameron Kameron

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