---
product_id: 269668732
title: "RP-75.4ABM 500 Watt Full-Range Class A/B 4-Channel Marine Amplifier"
brand: "skar audio"
price: "118.57 OMR"
currency: OMR
in_stock: true
reviews_count: 5
category: "Skar Audio"
url: https://www.desertcart.com.om/products/269668732-rp-75-4abm-500-watt-full-range-class-a-b
store_origin: OM
region: Oman
---

# 500W RMS Power Output Waterproof Marine-Grade Design Fully Adjustable Sound Controls RP-75.4ABM 500 Watt Full-Range Class A/B 4-Channel Marine Amplifier

**Brand:** skar audio
**Price:** 118.57 OMR
**Availability:** ✅ In Stock

## Summary

> 🌊 Power Your Marine Soundscape with Unstoppable Clarity!

## Quick Answers

- **What is this?** RP-75.4ABM 500 Watt Full-Range Class A/B 4-Channel Marine Amplifier by skar audio
- **How much does it cost?** 118.57 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/269668732-rp-75-4abm-500-watt-full-range-class-a-b)

## Best For

- skar audio enthusiasts

## Why This Product

- Trusted skar audio brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Rock-Solid Reliability:** 4-way protection circuitry guards against overheating, short circuits, and low voltage for worry-free cruising.
- • **Compact Powerhouse Design:** Sleek, space-saving form factor fits perfectly in tight marine spaces without compromising performance.
- • **Built to Brave the Elements:** Marine-grade waterproof coating and rust-proof casing ensure relentless durability on every adventure.
- • **Unleash 500 Watts of Pure Power:** 125W x 4 channels at 2Ω delivers immersive, crystal-clear sound that dominates the waves.
- • **Precision Sound at Your Fingertips:** User-adjustable gain, LPF, HPF, and bass EQ let you tailor your audio experience like a pro.

## Overview

The Skar Audio RP-75.4ABM is a 500-watt RMS, 4-channel Class A/B marine amplifier engineered for superior sound performance and durability. Featuring a waterproof circuit board, rust-proof casing, and advanced MOSFET power supply, it delivers 125 watts per channel at 2 ohms with adjustable sound controls and comprehensive protection circuitry—perfectly designed to elevate your boat’s audio experience in any marine environment.

## 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.

Review: Me gustó la calidad del producto, es la primera vez que utilizo está marca y obtuve un muy buen resultado, buenas respuesta, buena potencia, buena calidad de audio. 100% recomendado.
Review: Amp works great

## 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: n, Variable LPF, HPF, Bass EQ Switch (0, +6, +12 dB).Featuring 4-Way Protection Circuitry and 4 Gauge Power & Ground Input Termils for Maximum Current Flow.Sigl to Noise Ratio: 105 dB, 8 Gauge Power and Ground Input Terminals

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07481HH74 |
| Best Sellers Rank | #136,583 in Electronics ( See Top 100 in Electronics ) #102 in Car Multichannel Amplifiers |
| Included components | Skar Audio RP-75.4ABM Marine 4-Channel Amplifier |
| Is waterproof | True |
| Item model number | RP-75.4ABM |
| Item weight | 7.5 Pounds |
| Manufacturer | Skar Audio |
| Model name | RP-75.4ABM |
| Number of Items | 1 |
| Product Dimensions | 35 x 16 x 5.59 cm; 3.4 kg |
| Recommended uses for product | For use on boats |
| Speaker type | Outdoor |

## Product Details

- **Audio output mode:** Stereo, Multi-channel
- **Brand:** Skar Audio
- **Material:** aluminum or marine-grade stainless steel
- **Mounting type:** Surface Mount
- **Speaker maximum output power:** 500 Watts

## Images

![RP-75.4ABM 500 Watt Full-Range Class A/B 4-Channel Marine Amplifier - Image 1](https://m.media-amazon.com/images/I/51G-ePWHHLL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by J***Z on 13 August 2023*

Me gustó la calidad del producto, es la primera vez que utilizo está marca y obtuve un muy buen resultado, buenas respuesta, buena potencia, buena calidad de audio. 100% recomendado.

### ⭐⭐⭐⭐⭐ Review
*by A***W on 4 July 2025*

Amp works great

### ⭐⭐⭐⭐⭐ Review
*by M***H on 20 March 2025*

Works great and definitely pushes a little more than rated power.

## Frequently Bought Together

- Skar Audio RP-75.4ABM 500 Watt Full-Range Class A/B 4-Channel Marine Amplifier
- Skar Audio SK65M 6.5" 2-Way Marine Full Range 320 Watt Coaxial Speakers, Pair (White)

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*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-02-11*