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Skar Audio

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

  • Based on 374 reviews
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Availability: Only 3 left in stock, order soon!
Fulfilled by SKAR AUDIO
Arrives Friday, Feb 6
Order within 6 hours and 59 minutes
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Size: 500 Watt Full-Range Class A/B 4-Channel


Features

  • 500-Watt MOSFET 4-Channel Class A/B Power Marine Amplifier
  • RMS Power at 2 Ohms: 125 Watts x 4 Channels
  • RMS Power at 4 Ohms: 75 Watts x 4 Channel
  • Fully Marini zed with Waterproof Coating on Circuit Board & Rust Proof Painting on Mechanical Case
  • User Adjustable Controls: Gain, Variable LPF, HPF, Bass EQ Switch (0, +6, +12 dB)
  • Featuring 4-Way Protection Circuitry and 4 Gauge Power & Ground Input Terminals for Maximum Current Flow
  • Signal to Noise Ratio: 105 dB, 8 Gauge Power and Ground Input Terminals

Description

Scar Audio engineered the RP-75. 4ABM marine amplifier to set a new standard in marine grade amplifier performance. This four-channel marine amplifier is 2-ohm stable and utilizes a wide array premium internal components, such as its high speed MOSFET power supply as well as an advanced marine grade PCB board layout. Conservatively rated at 500 watts RMS power (125 watts x 4 channels), this amplifier will bring the speakers on your boat to life with unrivaled power output and sound clarity. The RP-75. 4ABM is extremely versatile as well with its compact physical design, which allows it to fit in a variety of tight or small locations on your boat. Also present on one side of the amplifier is a built-in user control panel that is fully adjustable - allowing you to dial in your sound exactly how you want it. Featuring adjustable controls for gain, high pass filter, low pass filter, a crossover switch, and more, you'll have full control over your listening experience. In addition to all the above features, this model also features four-way protection circuitry, which will give the user the peace of mind knowing they are protected against damage to the amplifier for various reasons - including electrical shortage, overheating, low voltage, and more. Our marine amplifiers feature a special marine coating internally that allow them to withstand the harshest conditions for long lasting use.

Brand: Skar Audio


Speaker Maximum Output Power: 500 Watts


Mounting Type: Surface mount


Material: aluminum or marine-grade stainless steel


Model Name: RP-75.4ABM


Speaker Type: Outdoor


Recommended Uses For Product: For Boats


Compatible Devices: Smartphone, Tablet, Television


Surround Sound Channel Configuration: 4.0


Included Components: Skar Audio RP-75.4ABM Marine 4-Channel Amplifier


Item Weight: 7.5 Pounds


Is Waterproof: true


Warranty Type: Limited


Number of Items: 1


Control Method: Touch


Power Source: Battery Powered


Audio Driver Type: Dynamic Driver


Specific Uses For Product: Marine (Boat)


UPC: 767408281706


Global Trade Identification Number: 06


Manufacturer: Skar Audio


Shape: rectangular prism


Product Dimensions: 13.78 x 6.3 x 2.2 inches


Item Weight: 7.5 pounds


Item model number: RP-75.4ABM


Is Discontinued By Manufacturer: No


Date First Available: July 25, 2017


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Feb 6

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • True power with quality sound
Size: 500 Watt Full-Range Class A/B 4-Channel
I was hesitant about Skar products until I bought this amp. It is very powerful and produces good quality sound. I get many compliments on my marine stereo.
Reviewed in the United States on July 7, 2025 by Nathan
    • Good product
Size: 500 Watt Full-Range Class A/B 4-Channel
Quality amp, quick shipping
Reviewed in the United States on August 15, 2025 by Kimberly Champagne Vigeant
    • Great
Size: 500 Watt Full-Range Class A/B 4-Channel
Been using these on boats for years. Great balance of performance and price. Especially the big mono amps for subwoofer. Can't go wrong for the price.
Reviewed in the United States on February 10, 2025 by M Yoshi
    • Awesome amp
Size: 500 Watt Full-Range Class A/B 4-Channel
I paired this with 6 Skar Audio marine speakers of my boat and wow the sound is so clear and outstanding. I highly recommend this product.
Reviewed in the United States on May 8, 2025 by Amazon Customer
    • Drunk area
Size: 500 Watt Full-Range Class A/B 4-Channel
Still going hard in my ambulance till this day five years six years later
Reviewed in the United States on November 11, 2025 by Good Fitmint
    • One of the best $135 dollars I ever spent!
Size: 500 Watt Full-Range Class A/B 4-Channel
Review Image by J. Boogie J. Boogie
Review Image by J. Boogie J. Boogie
Review Image by J. Boogie J. Boogie
No, I will start off with saying in the beginning, I was very very VERY skeptical about Skar Audio. I heard alot of good/bad stuff about them. I almost bought one of their ZVXv2 subs but it didn't come in a 10 inch, instead I found a brand new Orion hcca 10 on sale with warranty. Goldmime of a sub! I was watching countless videos on YouTube about the brand, with sub, amps, door speakers etc. I finally bit the bullet and bought this one. At first, the main issue I was experiencing was getting power to the amp. My own operator error, hey I am not perfect lol. Once power was established correctly, the blue LED light on the side came on and I was so relieved. I am a firm believer in Skar Audio. Day and night difference with my new (4) Kenwood 5 way 6x9s in my Dodge charger. If you are hestitate about a product, YouTube it and do the research like I did. Instead of me buying a mainstream overrated 4 channel amp (built off overhype from anywhere between 200-525), I got this one for $135 on sale price with Amazon. My opinion, this amp is underrated. I might have to get a big mono Skar Audio amp to feed my Orion hcca 10 sub. Hmmm, decisions........ decisions ... show more
Reviewed in the United States on November 10, 2018 by J. Boogie J. Boogie
    • Surprisingly Powerful
Size: 500 Watt Full-Range Class A/B 4-Channel
I read the reviews and decided to give this upcoming Brand a try. I know they’ve been around but I’ve been a JL, Alpine and JBL fan. I replaced an amp that I had for 6 years in my boat. I was surprised to hear the same quality coming from this amp. I will be giving their speakers a try now.
Reviewed in the United States on July 14, 2024 by Ryan Ramos
    • DOES NOT COME WITH MOUNTING HARDWARE
Size: 500 Watt Full-Range Class A/B 4-Channel
Pushes good power to 2 6.5'' speakers sounds great. Did not come with any mounting hardware.
Reviewed in the United States on May 22, 2025 by Amazon Customer

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