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
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Availability:
Only 6 left in stock, order soon!
Arrives
Nov 18 – Nov 23
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Style: 400W 4 Channel
Features
- Power - 100 Watts Max X 4 @2-Ohms, 50 Watts Max X 4 @4-Ohms
- 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
- 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
- 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
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.
Item dimensions L x W x H: 7.8 x 9 x 2 inches
Voltage: 14.5 Volts
Manufacturer: BOSS Audio Systems
Mounting Type: Surface Mount
Brand: BOSS Audio Systems
Item dimensions L x W x H: 7.8 x 9 x 2 inches
Voltage: 14.5 Volts
Manufacturer: BOSS Audio Systems
Mounting Type: Surface Mount
Brand: BOSS Audio Systems
Number of Channels: 4
Output Power: 400 Watts
Global Trade Identification Number: 54
UPC: 791489115254 352937470365
Product Dimensions: 7.8 x 9 x 2 inches
Item Weight: 3.09 pounds
Item model number: R1004
Is Discontinued By Manufacturer: No
Other display features: Wireless
Color: Black
Whats in the box: Users manual
Date First Available: March 15, 2011
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Nov 18 – Nov 23
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Style: 400W 4 Channel
This amplifier exceeded my expectations. The installation was simple and the difference in the car's audio is impressive: the bass is heard deeper, the treble is clearer and in general the sound is much stronger. It does not distort even if it increases the volume and you can see the quality in every detail. In addition, the size is compact and does not take up too much space. Without a doubt, an excellent purchase for those who enjoy good music in the car.
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Reviewed in the United States on September 10, 2025 by Ramón zambrano
Style: 400W 4 Channel
***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!!!
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Reviewed in the United States on July 2, 2018 by Jamison Jamison
Style: 600W 2 Channel
Bought this 600w two channel amp to run 2 12" subs that are rated for 300w each. Figured it was a good price for what I was trying to do and it worked great,....for about 4 days. Suddenly stopped working when I was out running errands. Fine when I got to the store, nothing when I got out of the store. Literally nothing. No sound, no indication anything is wrong with it, no warning it was defective. Just stopped powering the subs. Still has the pretty blue lights behind the logo and a green light showing it has turned on from the remote wire signal but nothing going to the speakers. Speakers checked out, LOC checked out, even tried wireing up the high input harness just to be sure it wasn't coming from the signal side. Hard wired subs to the speakers in my soundbar (jeep thing) and they're fine. Checked the ground, remote, and power, all fine. The crazy thing is, it didn't blow the fuse on it or on the power supply. Just spend a few extra dollars on something that isn't hoping you mistakenly buy it thinking it said Bose. It's cheap for a reason. At least Amazon didn't hassle me on the return.
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Reviewed in the United States on April 17, 2025 by Amazon Customer
Style: 400W 4 Channel
This unit is clearly not intended to push anything more than a few door speakers. So many people having issues with the amp, and it appears that many of them are using it incorrectly. This is not meant to be bridged and used to power a subwoofer. It is intended to be used to give your door speakers a little boost over the stock amp in your head unit. I also read a lot of reviews about there being a lot of engine noise. I had this issue as well. A couple of things usually cause this issue: 1) A bad ground, causing the head unit to send a bad signal to the amp (tested this by hooking up my phone directly to the amp, and getting no interference) - can also occur if the head unit is cheap, a.k.a "Dual". 2) Gain set too high I fixed these issues by setting my gain just low enough that I couldn't hear any more engine whine, and by installing an in-line ground loop isolator. After that, it was all about setting up my head unit to put out as much sound as I could get it to. Once I got everything set up, and replaced my cheapo Dual head unit with a Pioneer, I was able to tune the sound to get the amp to push my door speakers as loud as it could. To avoid distortion, I used the crossover setting in my head unit to take out all the bass from the door speakers. I have two 12s in the back that easily fill this lack of bass in, giving me a really good and loud sounding setup. I couldn't be happier, so long as the amp lasts. Don't expect this thing to be the best amp you'll ever buy. It isn't. But, for the price, it's a fantastic option to get more out of your aftermarket door speakers.
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Reviewed in the United States on May 15, 2018 by Devon Day Devon Day
Style: 600W 2 Channel
It makes my 10" sub hit harder then the previous cheap amp. It does have a overheating function that works. It wasn't getting enough air flow and got hot and turned off for a few minutes. Then started working again once it cooled down enough.
Reviewed in the United States on October 9, 2025 by Chris
Style: 1000W 4 Channel
Giving it 3 stars because its easy to install but im unable to get whining noise out even running a LOC with RCA cables. It minimized the noice but its still present.. Will be replacing it with a more higher end
Reviewed in the United States on September 20, 2025 by gerardo
Style: 400W 4 Channel
Amp is doing its job so far , dont know for how long but i did add a ground loop isolator to fix my alternator whine coming thru
Reviewed in the United States on October 3, 2025 by Omfg1812
Style: 800W 2 Channel
It's a cheap, inefficient, class a/b amp. It's not winning any awards at show, but its driving a 12" and adds a little bass to my meager system in my daily driver. I've had this for 4 years now. It survived a car flipping end over end early in its life while being completely unsecured. A little dented and bruised, it has continued to serve faithfully through the years since. If you need something modest, you don't need to blow the latch off your trunk, and don't want to spend a lot of money, this is a decent amp for the cost.
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Reviewed in the United States on April 28, 2025 by JT