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Your cart is empty.Drive your in-vehicle audio experience up a level with the Boss Audio Riot R4002 Class A/B 2-Channel Full Range Amplifier. This 2-Ohm stable amplifier features 800 Watts Max Power with a MOSFET power supply to pump out your playlists. Customize the sound with Fixed High Pass Crossover, Variable Low Pass Crossover and Bass Boost. Control those Bass vibes with the Remote Subwoofer Control. Bridge channels for more power and flexibility. Amplifiers in the Riot Series are perfect for first time car audio buyers looking to add Bass, enhanced sound and performance to their system at an affordable price. Get your vehicle rocking with the Boss Audio R4002. For further product details, please scroll down.
Jamison
2025-08-12 15:56:18
***UPDATE 8/4/18***I went mudding a week ago and accidentally sank my jeep in a pond 🙃 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!!!
Ricky Newsom
2025-08-10 17:26:14
Worked great
Rich D
2025-08-04 10:34:07
Am I missing something?Its not like I install 12V audio equipment all the time... but I certainly ain't a novice or beginner.I have never heard of a 9VDC requirement for the remote turn-on. It has always been 5VDC. Are there even head units that send a 9VDC signal? I can rig it up to operate off of the 12VDC with some sort of ADDITIONAL switch or something... but WTH should I have to do that!?I'm not seeing anything in the published specifications that says it requires 9VDC. The only place it's mentioned is in the back of the manual in the troubleshooting .. under "If amp doesn't turn on".. its the 2nd potential cause listed.So far I'm pretty frustrated/disappointed with this purchase. I feel like I have wasted my time with this.It may be good performing amp for the price ... but that does not one any good if has "special" non-standard requirements. Its the weekend so can't call BOSS to determine if there is some work around. I'm guessing I will have to send back. I can't use this.
Terrell
2025-07-14 12:00:02
One of the channels has a shortage, sound goes in and out ,Other than that sounds good.
John Watts
2025-07-01 16:31:44
I installed two under seat subs and eight and a 10 in the driver and passenger side and later over 120 ft of wire in my car with this amp connected to the front two and rear two speakers.I want to say it's like day and night with this amp for the way the speaker sound, they sounded okay but now they sound great and with the addition of the subs I haven't had a car that had such full range and clarity before great product a lot of work very affordable.
Charles Michael Thomas
2025-06-16 16:32:45
Not good quality amp. Needs additional noise filter. Waste of ca$h,when you can buy an Amp with built in noise filter.
Cameron Boyce
2025-04-27 10:31:26
Obviously there are hundreds to thousands of reviews on this "400" watt 4 channel amp, but with all that in mind, I decided to purchase this for a Lincoln SUV to give the factory speakers an extra boost. Arrived within 2 days, took me about 30-45 minutes to install (wiring was already in place from a previous project) and I have to say I'm honestly impressed. Now it's definitely not 400 watts or anything close to that as far as power output goes, but it definitely pumps the speakers up so they sound nice and clean. At first I had this amp powering up 4 Boss 5x7" 3-way speakers, and those sounded terrible but that was the speakers, not the amp. Put the factory 6x8s back in and WOW it sounds good. I didn't notice ANY alternator whine, feedback, buzzing, or any other noises that other reviewers had pointed out. This amp has been installed for about a month now, I waited to leave a review so I could see how it held up over the last month. So far, so good. Especially at this price? Definitely recommend!
Willow
2025-04-19 13:17:08
I bought this because I was not happy with my new JVC stereo- it did not have the power my old JVC did. Come to find out the old JVC's have a great pre-amp that the new ones lack. I still have old JVC as I still go back and forth about switching it out- only thing that stops me is new has a usb port in front that I use all the time. I bought the amp to power 4 speakers in my 02 Chevy Silverado 1500 ext cab. I have it powering four Pyramid 250 watt (each) speakers- 2 are 5x8's and 2 are 6x9's. It does a great job of boosting the midrange and highs. I went from having to turn my stereo to 16 to get a decent sound level for driving to only turning it to 3 to get the same level now.I have another Boss amp (1200 watt) hooked to my subwoofer. I will say the subwoofer control is not going to boost your sub...it will actually cut power to it. It is nice if you have someone in the vehicle that hates a lot of bass, but other than that I leave it unplugged. What some people do not realize is you have to match watts for watts. If you are trying to run 1000 watt amp to power a 800 watt sub- you will not be happy. It will get hot unless you limit the output. I had that issue when changing to a lower watt sub, the amp would get hot and turn off (I thought it was the sub turning off). I had the audio shop make some changes and now all runs cool and the music is great- OK except to the old people who can't stand the thumps and loud music coming from my truck :)
最強
2025-03-02 13:06:55
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Elier
2025-02-13 10:51:24
Buen producto funciona bien y mejoró el sonido de mi auto de agencia sin duda excelente opción a un precio súper bajÃsimo
サãƒ
2025-02-05 12:15:23
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Chris09
2025-01-26 14:56:41
Sehr gute Endstufe fürs auto mein alter hat denn Geist aufgegeben und da hab ich mich für denn entschieden sieht optisch echt gut aus würde ich wieder kaufen Versand wahr auch sehr fix
Dan Ballinger
2025-01-11 18:46:49
The Amp earth's itself through the RCA cable and cause huge feed back, even with a ground loop isolator! Tryed multiple Earth points and different RCA cables as wanted to be as fair as possible when using this product but you CANNOT get the noise to stop. APPARENTLY returns are unavailable will be raising a complaint
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