--- product_id: 20785785 title: "Skar Audio RP-75.4AB 500 Watt Full-Range Class A/B 4 Channel Car Amplifier" brand: "skar audio" price: "Β£14.90" currency: GBP in_stock: false reviews_count: 13 category: "Skar Audio" url: https://www.desertcart.co.uk/products/20785785-skar-audio-rp-75-4ab-500-watt-full-range-class store_origin: GB region: United Kingdom --- # 500W MOSFET Power User Adjustable EQ & Filters 4-Way Protection Circuitry Skar Audio RP-75.4AB 500 Watt Full-Range Class A/B 4 Channel Car Amplifier **Brand:** skar audio **Price:** Β£14.90 **Availability:** ❌ Out of Stock ## Summary > 🎡 Unleash Your Ride’s True Voice with Skar Power! ## Quick Answers - **What is this?** Skar Audio RP-75.4AB 500 Watt Full-Range Class A/B 4 Channel Car Amplifier by skar audio - **How much does it cost?** Β£14.90 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/20785785-skar-audio-rp-75-4ab-500-watt-full-range-class) ## 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 - β€’ **Plug & Play Confidence:** 8-gauge power/ground terminals for optimal current flow and easy installation. - β€’ **Built to Last & Protect:** 4-way protection circuitry ensures your investment stays safe during every drive. - β€’ **Precision Sound Sculpting:** Gain, LPF, HPF, and Bass EQ controls let you tailor your audio experience flawlessly. - β€’ **Efficient Class A/B Design:** Maximizes clarity and power without draining your car’s electrical system. - β€’ **Power That Commands Attention:** Delivers 125W x 4 channels at 2Ξ© for booming, room-filling sound. ## Overview The Skar Audio RP-75.4AB is a robust 4-channel Class A/B car amplifier delivering 500 watts total power with 125 watts RMS per channel at 2 ohms. Featuring a high-speed MOSFET power supply, advanced user controls including gain, crossover filters, and bass EQ, plus 4-way protection circuitry, it offers versatile, reliable performance for aftermarket car audio systems. Ideal for millennials seeking powerful, customizable sound without breaking the bank, this amp balances loud, punchy bass with efficient operation and durable build quality. ## 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. Review: Great 4 channel for the price. - 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. Review: I'm impressed with this amp and Skar in general - 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. ## 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 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00TKF53LC | | Best Sellers Rank | #1,067 in Electronics ( See Top 100 in Electronics ) #1 in Car Mono Amplifiers | | Brand | Skar Audio | | Brand Name | Skar Audio | | Customer Reviews | 4.6 out of 5 stars 849 Reviews | | Global Trade Identification Number | 00760999042718 | | Item Dimensions | 19.5 x 7 x 3 inches | | Item Type Name | Car Amplifier | | Item Weight | 7.4 Pounds | | Item dimensions L x W x H | 19.5 x 7 x 3 inches | | Manufacturer | Skar Audio | | Material Type | Aluminum, steel, plastic | | Maximum Output Power | 500 watts | | Maximum Supply Voltage | 12 Volts (DC) | | Model | RP-75.4AB | | Mounting Type | Surface Mount | | Number of Channels | 4 | | Output Power | 500 Watts | | Part Number | RP-75.4AB | | Specification Met | FCC | | UPC | 760999042718 | | Unit Count | 1.0 Count | | Warranty Description | 2 year limited warranty | ## Product Details - **Brand:** Skar Audio - **Item dimensions L x W x H:** 19.5 x 7 x 3 inches - **Manufacturer:** Skar Audio - **Maximum Supply Voltage:** 12 Volts (DC) - **Mounting Type:** Surface Mount ## Images ![Skar Audio RP-75.4AB 500 Watt Full-Range Class A/B 4 Channel Car Amplifier - Image 1](https://m.media-amazon.com/images/I/71Eugwm-lwL.jpg) ![Skar Audio RP-75.4AB 500 Watt Full-Range Class A/B 4 Channel Car Amplifier - Image 2](https://m.media-amazon.com/images/I/71rDf-c6PLL.jpg) ![Skar Audio RP-75.4AB 500 Watt Full-Range Class A/B 4 Channel Car Amplifier - Image 3](https://m.media-amazon.com/images/I/71ugHnCHtIL.jpg) ![Skar Audio RP-75.4AB 500 Watt Full-Range Class A/B 4 Channel Car Amplifier - Image 4](https://m.media-amazon.com/images/I/71TLHh7U33L.jpg) ![Skar Audio RP-75.4AB 500 Watt Full-Range Class A/B 4 Channel Car Amplifier - Image 5](https://m.media-amazon.com/images/I/61AXu9-mohL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Can i run 8 speakees on this?** A: I currently run six on just 2 channels. Pay attention to the ohm load and properly set gains with a multimeter prior to playing. **Q: What size fuse this amplifier carry** A: For every 100 watts of RMS power, you will want a 10-15A fuse. So if you have a 1,000RMS watt amp, I would run 125A-150A fuse. **Q: Would this amp be appropriate for skar audio vxi65 360-watt 6.5" 2-way component speaker system?** A: This is a class A/B 4 channel amp. It works great in your application. **Q: Will this amp power 4 skar audio sk 6x9s good i got 2 skar audio vvx 15s on a skar rp 2000.1d and i don’t want the bass to drown out the voice** A: Yes, this amp is shouldn't be your concern. I'd be worried about those 6x9s handling this amp. I say that because though I really like Skar I've had no luck with their 6x9s. Good news is I haven't owned these sk 6x9s so you may be in luck. This amp is powering a pair of audiopipe CSL-6904 6x9 & a pair of Infinity KAPPA-93iX 6x9s in my car with a Skar EVL-15 pushed at 1 ohm with an audiopipe 1500w monoblock & fixing to strap it. The clarity of the 6x9s are wonderful at any level. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great 4 channel for the price. *by R***D on April 26, 2024* 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. ### ⭐⭐⭐⭐⭐ I'm impressed with this amp and Skar in general *by E***C on August 16, 2024* 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. ### ⭐⭐⭐⭐⭐ Must get! *by H***L on March 22, 2026* Put this in, with Kenwoods... my car is BUMPING! Thanks Skar! ## Frequently Bought Together - Skar Audio RP-75.4AB 500 Watt Full-Range Class A/B 4 Channel Car Amplifier - Skar Audio RP-1200.1D Monoblock Class D MOSFET Amplifier with Remote Subwoofer Level Control, 1200W - Skar Audio 4 Gauge Amplifier Wiring Kit - Blue, Copper Clad Aluminum, SKAR4ANL-CCA --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/20785785-skar-audio-rp-75-4ab-500-watt-full-range-class](https://www.desertcart.co.uk/products/20785785-skar-audio-rp-75-4ab-500-watt-full-range-class) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-25*