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BOSS Audio Systems

BOSS Audio Systems R4002 Riot Series Car Audio Stereo Amplifier – 800 High Output, 2 Channel, Class A/B, 2/4 Ohm, Low/High Level Inputs, High/Low Pass Crossover, Full Range, Bridgeable, Subwoofer

    • Based on 5,014 reviews
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Availability: Only 5 left in stock, order soon!
Fulfilled by Amazon
Arrives Monday, Nov 25
Order within 22 hours and 14 minutes
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Style: 800W 2 Channel


Features

  • Power - 400 Max x 2 @ 2 Ohms, 200 Max x 2 @ 4 Ohms, 800 Max Bridged x 1 @ 4 Ohms
  • Full Range - With a Full Range amplifier you not only have the option to run your speakers, but also your subwoofers
  • Low & High Level Inputs - A low level (RCA) input is measured in voltages. A high level (+/- wire) input is measured in wattages. Both essentially carry signal from your receiver to your amplifier to your speakers
  • Variable Input Gain Control - The gain control is not for adjusting volume. It simply adjusts the amount of signal that is coming from your receiver and going to your amplifier
  • Class A/B Topology - Class A amplifiers have enormous amount of current flowing through its output transistors with no audio signal. Class B amplifiers have no current flowing through its outputs with no audio signal
  • 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: 10.72 x 10.44 x 2.25, Weight: 5.20 lbs., Speaker Impedance: 2 to 8 Ohm, THD @ RMS Output: 0.01%, S/N Ratio: 102 dB, Frequency Response: 9 Hz to 50 kHz, Fuse Quantity: 1 40 Amp ATO Blade

Item Dimensions LxWxH: 10.72 x 10.44 x 2.25 inches


Manufacturer: BOSS Audio Systems


Brand: BOSS Audio Systems


Number of Channels: 2


Output Power: 800 Watts


Item Dimensions LxWxH: 10.72 x 10.44 x 2.25 inches


Manufacturer: BOSS Audio Systems


Brand: BOSS Audio Systems


Number of Channels: 2


Output Power: 800 Watts


Package Type: MOSFET Car Amplifier


Specification Met: certified frustration-free


Product Dimensions: 10.72 x 10.44 x 2.25 inches


Item Weight: 5.53 pounds


Item model number: R4002


Is Discontinued By Manufacturer: No


Other display features: Wireless


Color: Black


Whats in the box: See specs


Department: BOSS AUIO


Date First Available: March 15, 2011


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Nov 25

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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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews

    • Amazon is weird about this
It's an amp. Takes an audio signal and makes speakers go brrr. It sounds completely fine, and as other reviews say, it will need a ground loop isolator to remove some of the noise, however there's a background hiss present. While driving I'm sure it's not audible. However, I found out that my head unit could drive my speakers perfectly fine without the amp, so I decided to return the amp. For whatever reason, Amazon tells me the item is not returnable. When I called them, the rep just said "we'll refund you and you keep it" which is absolutely mind boggling to me. I'd make sure you need an amp before ordering it, and I probably should've, but I don't know what's going on there. Not everyone might get a caution to the wind rep like mine. ... show more
Reviewed in the United States on June 5, 2023 by Jake Holden
    • Boss quality at a remarkable price
I've had Boss equipment my whole adult life: guitar effect pedals, MIDI equipment etc.. I paid a little extra however it would consistently outperform it's competitors. Frankly I bought this because my car system was on a budget, it's the best amplifier I've ever had. Plenty of power. I was expecting to have to mess with filters and transformers to eliminate noise in my 1968 Plymouth, especially from the alternator. Lo and behold NONE! Use top quality cords, I used a 10 foot Rica tipped 6 in one. Ground it well, Spend a little extra on speakers you'll love the sound. ... show more
Reviewed in the United States on September 3, 2023 by M. J. Peterson
    • Buen producto
Todo funcional
Reviewed in the United States on October 20, 2023 by Northan Hurtado
    • Not fully working
Not fully working. I tried various scenarios with the setup but I could not get the RCA inputs for channels 3 and 4 to work. Only channels 1 and 2 worked. I saw the reviews that mentioned there was noise and hum coming through the speakers, so I went on ahead and ordered a ground loop idolator which indeed removed the sound. However, it was only for channels 1/2. I tried using the high level input wiring for channels 3/4 and it worked. But that introduced the extra noise through those speakers. Since I didn't have anything to remove the noise for those channels, I just disconnected it and just rewired the rear speakers directly to the radio bypassing the amp. Therefore only the front speakers are using the amp. As I am only able to use two channels on this 4 channel amp, I could've just purchased a 2 channel amp and saved money. Because I went through so much trouble to setup and accommodate for this amp, I just decided to keep it and live with only the front speakers being amplified. Overall, I am benefiting with the sound being better than what it was, but it's still not like it should be if the RCA inputs for channels 3 and 4 were working like it should. I feel a bit cheated. If no one can tell me or make me aware of something I may be missing in the connections or something that I may be doing wrong for the RCA plugs for channels 3 and 4 not working, I'm quite disappointed with this purchase. ... show more
Reviewed in the United States on September 28, 2023 by TDJM
    • Quality
Great sound easy to use & setup
Reviewed in the United States on October 5, 2023 by Walter Desteli
    • Me gusta mucho
Cunple con lo q ofrece ✅️ lo recomiendo
Reviewed in the United States on October 2, 2023 by Manuel
    • Sweet spot
I wanted a decent brand but am such a cheap a$$. Has more channels than I need but I run a 8 inch sub on 2 of the channels. She hits hard in my little old jeep. Just wish I had a better head unit and front speakers. Solid amp. My jeep has no top so it's been rained on a couple of times under my seat it has a little protection. Also I live in hawaii so the air is salty, and a year later she still works perfectly. ... show more
Reviewed in the United States on August 18, 2023 by Nychelle Rodriguez
    • Good Cheap Amplifier
I added this amplifier to my 99 Jeep TJ which has after market speakers that needed a little more power. The one issue I had was that the amp picked up engine noise so I had to buy a ground loop idolater which was only $12 and plugs into the RCA cables, 2 second install that took away the distortion. I would have went with a higher quality amp but with an old jeep that I drive around with the doors off, I didn’t want to invest in something expensive that might end up getting stolen. Overall it’s a good little amp if you’re on a budget. ... show more
Reviewed in the United States on February 23, 2023 by Random guy

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