--- product_id: 1121438 title: "BOSS Audio Systems R1004 Riot 400 Watt 4 Channel Class A/B Car Amplifier" brand: "boss audio systems" price: "β‚©150900" currency: KRW in_stock: true reviews_count: 13 url: https://www.desertcart.kr/products/1121438-boss-audio-systems-r1004-riot-400-watt-4-channel-class store_origin: KR region: South Korea --- # 400W max power @ 2Ξ© 4-channel full range output MOSFET power supply for precision BOSS Audio Systems R1004 Riot 400 Watt 4 Channel Class A/B Car Amplifier **Brand:** boss audio systems **Price:** β‚©150900 **Availability:** βœ… In Stock ## Summary > 🎢 Unleash the Riot: Power, Precision, and Pure Audio Bliss ## Quick Answers - **What is this?** BOSS Audio Systems R1004 Riot 400 Watt 4 Channel Class A/B Car Amplifier by boss audio systems - **How much does it cost?** β‚©150900 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/1121438-boss-audio-systems-r1004-riot-400-watt-4-channel-class) ## Best For - boss audio systems enthusiasts ## Why This Product - Trusted boss audio systems brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Compact Yet Mighty:** Sleek 7.75” x 9” x 2” design fits seamlessly into your car without sacrificing power. - β€’ **Precision MOSFET Tech:** Advanced MOSFET power supply ensures efficient, distortion-free performance every time. - β€’ **Versatile Full-Range Audio:** Supports full-range speakers plus subwoofers, perfect for a balanced, immersive car audio setup. - β€’ **Built to Last with Confidence:** Backed by a 6-year parts and labor warrantyβ€”because your sound system deserves longevity. - β€’ **Power That Commands Attention:** Delivers 100W x 4 channels at 2 Ohms for crystal-clear, room-filling sound. ## Overview The Boss Audio Riot R1004 is a 400-watt max 4-channel Class A/B car amplifier designed for audiophiles seeking powerful, distortion-free sound. Featuring a MOSFET power supply and full-range output capability, it supports 2 to 8 Ohm speakers and delivers a clean 0.01% THD with a 90 dB signal-to-noise ratio. Compact and reliable, it comes with a 6-year warranty, making it an ideal upgrade for first-time car audio enthusiasts craving premium sound performance. ## Description Power up your music on the trails with the Boss Audio Riot R1004 4 Channel Class A/B Amplifier. This 2-Ohm stable Amplifier features 400 Watts Max Power with a MOSFET power supply to get your music in gear. Amplifiers in the Riot Series are perfect for first time car audio buyers looking for enhanced sound and performance for their system at an affordable price. Get better sound with the Boss Audio R1004. For further product details, please scroll down. ## Features - Power - 100 Max x 4 @2 Ohms, 50 Max x 4 @4 Ohms - Class A/B Topology - Class β€˜A’ amplifiers have enormous amount of current flowing through its output transistors with no audio signal. Class β€˜B’ amplifiers have no current flowing through its outputs with no audio signal - Full Range - You have the option to run your speakers at full range, plus a subwoofer for some bass. Make sure the math adds up and you are good to go. i.e. Impedance loads, proper polarity. - MOSFET Power Supply - A MOSFET is an electrical switch that allows the flow of electrical current. It controls the output voltage & current precisely by removing the output current sensing loss & eliminating all secondary feedback circuitry. - Specs - Dimensions: 7.75” x 9” x 2”, Weight: 3.09 lbs., Speaker Impedance: 2 to 8 Ohm, THD @ RMS Output: 0.01%, S/N Ratio: 90 dB, Frequency Response: 12 Hz to 22 kHz, Fuse Quantity: 1 15 Amp ATO Blade. - 6 Years Parts and Labor ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B004S50ZDA | | Best Sellers Rank | #9,361 in Electronics (See Top 100 in Electronics) #12 in Car Multichannel Amplifiers | | Brand | BOSS Audio Systems | | Built In Media | Users manual | | Customer Reviews | 3.8 3.8 out of 5 stars (3,710) 3.8 out of 5 stars | | Item Type Name | BOSS Audio Systems R1004 4 Channel Car Amplifier – Riot Series, 400 Watts, Full Range, Class A/B, 2 Ohm Stable, IC (Integrated Circuit) Great for Car Speakers and Car Stereos | | Item Weight | 3.1 pounds | | Manufacturer | BOSS Audio Systems | | Mfr Part Number | R1004 | | Model Number | R1004 | | Number Of Items | 1 | | Unit Count | 6 Count | | Warranty Description | 6 Year Platinum Online Dealer Warranty valid only on products Sold / Shipped by Amazon.com. This offer is not valid on purchases made from third party market place sellers | ## Product Details - **Brand:** BOSS Audio Systems - **Item dimensions L x W x H:** 9.16 x 10.44 x 2.25 inches - **Manufacturer:** BOSS Audio Systems - **Mounting Type:** Surface Mount - **Number of Channels:** 2 ## Images ![BOSS Audio Systems R1004 Riot 400 Watt 4 Channel Class A/B Car Amplifier - Image 1](https://m.media-amazon.com/images/I/61MuGUxecOL.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: whats rhe size of the amplifier** A: Dimensions of the R4002 are 10.79" x 10.43" x 2.25". **Q: I just purchased a BOSS Armor Series 10inch 2200 watt sub and wanted to know if this amp would push it pretty good?** A: For a few more bucks this is a better match for your sub(SSL EV2.2000 EVOLUTION 2,000-Watt 2-Channel MOSFET Amplifier). Now with that being said your 10" sub will not handle 2200w it will only handle very short peaks of 2200w and it would have to be clean wattage. this amp will push it well set it about 3/4 and X it over at about 90hz **Q: Can you support two 10" subs with this one amp?** A: Hello. Yes, this amplifier will support two subwoofers. You will need to make sure that each subwoofer does not exceed 400 watts peak power. **Q: will this amp power 2 6x9 500 watt door speakers and 2 rear pillar speakers?** A: It will with ok sound quality if it's for inside the car listening pleasures. However getting another one and bridging it or a higher powered amp for a good baseline would be recommended. ## Customer Reviews ### ⭐⭐⭐⭐⭐ IT’S NOT THE AMP’S FAULT! *by on Reviewed in the United States July 2, 2018* ***UPDATE 8/4/18***I went mudding a week ago and accidentally sank my jeep in a pond πŸ™ƒ Completely flooded the floor of my interior and soaked the amp, luckily it was off. A couple days later I ripped the entire interior out and washed it out really good, like literally washed the inside of my jeep with a hose. I figured the amp had already been soaked what more harm could I do. Got everything back together after drying out, fired up the jeep, turned the stereo on and BAM! Perfect sound quality. If it can get soaked twice and still work I think that says something.*end of update*Did you know, that running your power lead in close proximity to your audio cables can cause loss of sound clarity, distortion, and you guessed it, alternator whine?! I’ve had to fix plenty of botched installs due to this. I did a little test and ran my audio cables directly next to my 4g power lead going to both my amps. Heavy whine and almost no signal clarity. Re routed my cables to run on the opposite side of my power lead and wow! Signal was clear, bassy, and no alternator whine.This amp is phenomenal and woke up the old Bose speakers I pulled out of a 2001 Pontiac GTP (2ohms at 50 watts RMS, give or take). I drive a Jeep Wrangler TJ and space is precious, so I can’t have big amps and fancy subs. This fit under my driver seat perfectly and cranks some serious audio to my speakers, even with the top down. Great price for a quality low budget system and I get lots of compliments from friends. GREAT AMP!!! ### ⭐⭐⭐⭐⭐ Works super *by on Reviewed in the United States July 5, 2026* Love it gives a little more power to sound system. Sounds super ### ⭐ Junk *by on Reviewed in the United States January 9, 2019* Piece of junk. Dont believe me then go ahead and get it. Waste your money. Amazon should not be affiliated with this junk. Edit: So if anyone comes accross this and wonders, then I'll go more into detail about why it is junk. 1. The amp amplifies any electrical noise inside your vehicle on top of the never ending beeping sound it already makes. (Read the other reviews about this. It's way too common to ignore.) 2. The amp does not put out clean sound at all. (I used this for my door speakers.) I know this is not clean sound even when comparing this amp my also budget 2 channel "Do" amp it sucks. It can make your speakers sound blown. The amp throws random frequencies to your speakers whenever it wants because it has a built in non-adjustable crossover. It's not always giving you example: 10hz-20khz the full time if you want it..Based off what I know. If the amp you are wanting to get has an adjustable hpf and lpf then it will most likely give you the sound you need. Make sure to read reviews to see if people are having grounding issues with the amplifier causing it to make harsh noises. Still on the budget side of things you get what you pay for. Just don't agree with boss ripping people off with this amplifier.Do your research. I hope this review helped you learn from my own mistake. FACE PALM. ## Frequently Bought Together - BOSS Audio Systems R1004 Riot Series 4 Channel Amplifier Car Audio - Class A/B, 400 High Output, 2-8 Ohm Stable, High/Low Level Inputs, Full Range - BOSS Audio Systems KIT2 8 Gauge Complete Car Amplifier Installation Wiring Kit with Power Cables, Ground Cables, Turn-On Wire, Speaker Wire, Terminals - BOSS Audio Systems CH6530 Chaos Series 6.5 Inch Car Door Speakers - 300 Watts (Pair), 3 Way, Full Range, Tweeters, Coaxial, Sold in Pairs --- ## 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.kr/products/1121438-boss-audio-systems-r1004-riot-400-watt-4-channel-class](https://www.desertcart.kr/products/1121438-boss-audio-systems-r1004-riot-400-watt-4-channel-class) --- *Product available on Desertcart South Korea* *Store origin: KR* *Last updated: 2026-08-15*