Boss R1004

400W Peak Riot Series 4-Channel Class A/B Car Amplifier

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Product videos

• RMS: 38W x 4 @ 4 ohms
• Peak: 100W x 4 @ 2 ohms
• Total Peak Power: 400W
• Frequency response: 12 - 22,000 Hz
• Dimensions: 9"W x 7-3/4"L x 2"H

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Boss R1004 with Amplifier Wiring Kit

400W Riot Series 4-Channel Class A/B Car Amplifier



Product Highlights

• RMS: 38W x 4 @ 4 ohms
• Peak: 100W x 4 @ 2 ohms
• Total Peak Power: 400W
• Frequency response: 12 - 22,000 Hz
• Dimensions: 9"W x 7-3/4"L x 2"H



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General Features:

  • Riot Series 4-Channel Class A/B Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 38 watts x 4 chan.
    • 2 ohms*: 50 watts x 4 chan.
  • Peak Power Rating:
    • 2 ohms: 100 watts x 4 chan.
  • Max power output: 400 watts
  • 4 channel operation
  • Speaker-level (high-level) inputs
  • Total harmonic distortion: 0.01%
  • Signal to noise ratio: 90 dB
  • Frequency response: 12 - 22,000 Hz
  • 8 gauge power and ground wiring is recommended for installation
    • Contact us for information regarding a discount on select amplifier kits from our website when purchased together with this amplifier
  • Dimensions: 9"W x 7-3/4"L x 2"H
  • Authorized Platinum Internet Dealer
  • 1 year Sonic Electronix, and 5 years Manufacturer's warranty

*Spec based on preliminary testing, not based on manufacturer's specs. Manufacturer does not provide this information.

Boss R1004 owner’s manual

Specifications & Details

Power Specifications - Full Range Channels
RMS Power @ 4 ohms
38 watts x 4 channel
RMS Power @ 2 ohms
50 watts x 4 channel
Power Specifications - Full Range Channels
Peak Power @ 4 ohms
80 watts x 4 channel
Peak Power @ 2 ohms
100 watts x 4 channel
Amplifier Specifications
Riot Series
Marine Certified
Amplifier Class
Number of Channels
Total Peak Power Output
400 watts
Maximum Input Gauge Size
Any Gauge with use of Spade Terminal AWG
Minimum Impedance Unbridged
2 ohms
Minimum Impedance Bridged
Not Bridgeable
Frequency Response
12 - 22,000 Hz
THD at Rated RMS Power
Speaker Level Inputs
Preamp Outputs
Built-in Crossover
Signal-to-Noise Ratio
90 dB
Remote bass/level controller
Fan Cooled
Fuse Rating
15A x 1 
Total Fuse Rating
CEA-2031 Compliant
Sonic Certified Amplifier
Not Tested
Amp Bluetooth Connectivity
Hi-Res Certified
What is in the box?
User manual
WITB: Amplifiers
High-level input wiring harness w/ molex connectors (2)
Other Accessory #6
Warranty and Return Policy
Parts Warranty Duration
6 years
Labor Warranty Duration
6 years
Warranty Provider

Item Details


Model Number:




Internal SKU:


Internal Product ID:


Product and How-to Videos

  • How To Install an Amplifier: Car Amplifier Basics Part 2

Customer Ratings & Reviews

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Great product :D

It is a great product, I love how this amp works, thanks Sonic Electronix :).

By Giovanny on February 16, 2014


found this helpful.

Bad feedback noise

Installed this amp today it has horrible feedback Thought to begin with I would check wires it had solid ground and rcas were not close to power wires so I plan on buying different amp

By Jon on February 1, 2014


found this helpful.

Terrible amp, not worth the money

This amplifier is not worth the money even for it's cheap price. Installed it over the weekend and the noise was terrible. There was so much distortion that it made the amp useless. I would steer clear of purchasing this amp.

By Texas Ranger on April 1, 2014


found this helpful.

I do recommend this amp

Ive owned a few boss products and im very saticfied with them they do what i need and never had trouble out of it. For highs i recommend this amp highly...

By Anthony on December 24, 2013


found this helpful.


descent amp, pushes 4 infinety pretty nicely in my maz 6, not a mind blower but good for mid level system

By Dru on December 25, 2014


found this helpful.

Perfect for computer!

I am using this on my computer. Power comes from a generic 5A power supply (12VDC of course). Line out from the PC connects to two 2-way RCA splitters into this amp. Two channels power the satellite speakers and the other two channels power the mid bass speakers. Sounds great and is a perfect upgrade from typical 2.1 computer systems. One great feature of this amp is the soft-on (time delay speaker output relay switch) circuit which keeps the speakers from popping loudly when a brownout occurs (no need to have the speakers connected to the precious battery backup UPS!).

By Sure, why not on October 12, 2014


found this helpful.

Great Product

great product. I would recomend it to others. The only problem i had with it is adjusting the volume on the system itself. the knobs seem to be too small. Otherwise a great product.

By Abin76 on March 7, 2015


found this helpful.


I bought this amp about a year ago but due to weather and lack of time, I was barely able to install it today. I am not happy with this purchase. My speakers sounded distorted no matter how much I adjusted the levels unless I had the volume about a quarter high. Speakers sounded under powered, because they sound better with the headunit. As I was looking for a new amplifier to buy I noticed this amp is NOT CEA-2006 Compliant, which upsets me because you guys had it advertised as CEA-2006 Compliant when I purchased it.

By Rey on April 28, 2016 checkmarkIcon Verified purchase


found this helpful.

Great Value

Yes I would recommend. This product very satisfied for the price.

By Gary on January 22, 2016


found this helpful.

Great product

Very good & the price was great & always has low sales.

By Anonymous on August 6, 2019


found this helpful.


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