--- product_id: 263003920 title: "RP-75.4ABM 500 Watt Full-Range Class A/B 4-Channel Marine Amplifier" brand: "skar audio" price: "2052 zł" currency: PLN in_stock: true reviews_count: 5 category: "Skar Audio" url: https://www.desertcart.pl/products/263003920-rp-75-4abm-500-watt-full-range-class-a-b store_origin: PL region: Poland --- # 500W RMS power output Fully marine-grade waterproof & rustproof User-adjustable gain & EQ controls RP-75.4ABM 500 Watt Full-Range Class A/B 4-Channel Marine Amplifier **Brand:** skar audio **Price:** 2052 zł **Availability:** ✅ In Stock ## Summary > 🌊⚡ Amplify your marine adventures with power and precision that won’t quit! ## 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?** 2052 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/263003920-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 performance. - • **Precision Sound Control:** Customizable gain, bass EQ, and crossover filters let you tailor your audio experience to perfection. - • **Compact Powerhouse Design:** Sleek, space-saving form factor fits effortlessly into tight marine spaces without compromising power. - • **Built to Brave the Elements:** Marine-grade waterproof coating and rust-proof casing ensure durability in the harshest marine environments. - • **Power that Commands the Waves:** Delivers a robust 125W x 4 channels at 2 ohms for crystal-clear, distortion-free sound on your boat. ## Overview The Skar Audio RP-75.4ABM is a 500-watt RMS, 4-channel Class A/B marine amplifier engineered for superior sound clarity and durability. Featuring a fully marine-grade waterproof and rust-proof design, it delivers 125 watts per channel at 2 ohms with user-adjustable gain, EQ, and crossover controls. Its advanced 4-way protection circuitry ensures reliable operation in harsh marine conditions, making it the ultimate audio upgrade for boat enthusiasts seeking powerful, customizable sound on the water. ## 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: Strong, clean power and built for the water. Handles multiple speakers easily with no distortion. Solid construction and great sound output. Excellent marine amp. Review: A simple vista se nota la buena calidad de el amplificador, ya instalado y empezar a calibrar me hizo sonar muy fuerte un set de medios de 3 vías de hertz de 100 whats RMS anteriormente usaba un sound magus pk 700.4 clase d de 100 RMS por canal y creo notar escucharlo más fuerte este Skar aun así siendo de clase A/B que se enfocan más en calidad que en potencia, volvería a comprar amplificadores Skar Audio que si dan potencia real y hasta más de la que muestran en sus especificaciones ## 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 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07481HH74 | | Antenna Location | For Boats | | Audio Driver Type | Dynamic Driver | | Audio Output Mode | 4-Channel | | Best Sellers Rank | 116,950 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 27 in Car Audio & Video Mono Amplifiers | | Box Contents | Skar Audio RP-75.4ABM Marine 4-Channel Amplifier | | Brand Name | Skar Audio | | Compatible Devices | Smartphone, Tablet, Television | | Control Method | Touch | | Customer Package Type | Standard Packaging | | Customer Reviews | 4.6 4.6 out of 5 stars (356) | | Enclosure Material | aluminum or marine-grade stainless steel | | Global Trade Identification Number | 00767408281706 | | Is Waterproof | true | | Item Type Name | Marine Amplifier | | Item Weight | 7.5 Pounds | | Manufacturer | Skar Audio | | Maximum Speaker Output Power (in watts) | 500 Watts | | Model Name | RP-75.4ABM | | Model Number | RP-75.4ABM | | Mounting Type | Surface Mount | | Network Connectivity Technology | Wired | | Number of Audio Channels | 4.0 | | Number of Items | 1 | | Power Source | Battery Powered | | Speaker Size | 19.05 Centimetres | | Speaker Type | Outdoor | | Specific Uses For Product | Marine (Boat) | | UPC | 767408281706 | ## Product Details - **Audio output mode:** 4-Channel - **Brand:** Skar Audio - **Compatible devices:** Smartphone, Tablet, Television - **Connectivity technology:** Wired - **Material:** aluminum or marine-grade stainless steel - **Model name:** RP-75.4ABM - **Mounting type:** Surface Mount - **Recommended uses for product:** For Boats - **Speaker maximum output power:** 500 Watts - **Speaker type:** Outdoor ## 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 B***S on 22 March 2026* Strong, clean power and built for the water. Handles multiple speakers easily with no distortion. Solid construction and great sound output. Excellent marine amp. ### ⭐⭐⭐⭐⭐ Review *by R***O on 8 April 2024* A simple vista se nota la buena calidad de el amplificador, ya instalado y empezar a calibrar me hizo sonar muy fuerte un set de medios de 3 vías de hertz de 100 whats RMS anteriormente usaba un sound magus pk 700.4 clase d de 100 RMS por canal y creo notar escucharlo más fuerte este Skar aun así siendo de clase A/B que se enfocan más en calidad que en potencia, volvería a comprar amplificadores Skar Audio que si dan potencia real y hasta más de la que muestran en sus especificaciones ### ⭐⭐⭐⭐⭐ Review *by N***N on 7 July 2025* 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. ## 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) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pl/products/263003920-rp-75-4abm-500-watt-full-range-class-a-b](https://www.desertcart.pl/products/263003920-rp-75-4abm-500-watt-full-range-class-a-b) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-05-10*