BOSS Audio Systems R1004 Riot 400 Watt 4 Channel Class A/B Car Amplifier
BOSS Audio Systems R1004 Riot 400 Watt 4 Channel Class A/B Car Amplifier
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BOSS Audio Systems R1004 Riot 400 Watt 4 Channel Class A/B Car Amplifier

174 ratings
BOSS Audio Systems R1004 Riot 400 Watt 4 Channel Class A/B Car AmplifierBOSS Audio Systems R1004 Riot 400 Watt 4 Channel Class A B Car AmplifierBOSS Audio Systems MR1004 Riot Series Marine Class AB Amp 4 Channels 400 Watts
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Key item features

  • Potent Channel Output: This 4-channel car amplifier delivers a maximum of 400 Watts, providing 100 Watts per channel at 2 Ohms and 50 Watts per channel at 4 Ohms, supporting 2-Ohm stable operation.
  • Efficient Class Design: Its Class A/B design provides a reliable balance of high-fidelity sound and practical operational efficiency for enhanced audio experiences.
  • Flexible Input Options: Features both low-level (RCA) and high-level (+/- wire) inputs, allowing flexible connection to various car audio receivers.
  • Dynamic Audio Control: Includes variable gain control to precisely adjust the receiver signal, enabling full-range sound output for speakers and subwoofers.
  • Stable MOSFET Power: Equipped with a MOSFET power supply, it ensures cleaner sound, high operational efficiency, and improved thermal stability.
  • Detailed Performance Specs: With compact dimensions of 7.75” x 9” x 2” and 3.09 lbs, it features a 0.01% THD, 90 dB S/N Ratio, and a 12 Hz to 22 kHz frequency response.
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Specs

Brand, BOSS Audio SystemsRms power rating, 200 WImpedance, 8 ohmPeak audio power handling, 400 WInput/output type, RCASize, 10.75" x 9.5" x 3.62"

About this item

Product details

BOSS Audio Systems R1004 Riot 400 Watt 4 Channel Class A/B Car Amplifier 4 Channel Car Amplifier - 400 Watts, Full Range, Class A/B, 2 Ohm Stable, IC (Integrated Circuit) Get clear sound on the trails with the BOSS Audio Systems R1004 4 Channel Class A/B Amplifier. With 400 Watts Max Power and MOSFET power supply, this 2-Ohm Amplifier gives your music a boost. 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.
  • Power - 100 Max x 4 @2 Ohms, 50 Max x 4 @4 Ohms
  • Class A/B - A reliable balance of high-fidelity sound and practical efficiency
  • Low & High Level Inputs - A low level (RCA) input. Hhigh level (+/- wire) input
  • Variable Gain Control - Adjust the amount of signal from receiver to amplifier
  • Full Range - Run your speakers, but also your subwoofers
  • MOSFET Power Supply - Cleaner sound, high efficiency, better thermal stability
  • 7.75” x 9” x 2”, 3.09 lbs, 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
info:
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Specifications

Brand

BOSS Audio Systems

Rms power rating

200 W

Impedance

8 ohm

Peak audio power handling

400 W

Warranty

Warranty information

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Customer ratings & reviews

3.5 out of 5 stars
stars
174 ratings107 reviews
Includes global ratings and reviews
How item rating is calculated
  1. 5 stars52% (90)
  2. 4 stars7% (13)
  3. 3 stars6% (10)
  4. 2 stars7% (13)
  5. 1 star28% (48)

Reviews summary

Pros

  • : The amp delivers solid performance relative to cost.
  • : Minimal effort required for setup.
  • : The headphones deliver performance comparable to a car stereo.

Neutral

  • : Can be strong with smaller subs, but may lack power with larger ones.
  • : It provides strong output but emits noise and can drop out.

Cons

  • : The amplifier produces a whine during acceleration.
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Showing 1-3 of 107 reviews

May 17, 2025
Reviewer name: Jax
Item details
Color: Black
Sold bySpeece Inc.Delivered byWalmart
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Cheap, Simple, Smaller and works great.

Replaced a high dollar failed amp with this. It installed easy, and it works perfect for our application. It is about half the size of the old one. I am running 4 very small ceiling mounted speakers inside a motor home. We use our radio system to primary run our tv through, works perfect. Sounds great.

Helpful?2L5ABM31FWH223852012
Oct 11, 2025
Reviewer name: KoolGreekDaddy
Item details
Color: Black
Sold bySpeece Inc.Delivered byWalmart
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Good quality . Excellent value .

Helpful?2L5ABM31FWH223852012
Apr 16, 2025
Reviewer name: Benjamin
Item details
Color: Black
Sold bySpeece Inc.Delivered byWalmart
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Works real well good sound quality hooked up to factory works real well good sound quality hooked up to factory door speakers

Helpful?2L5ABM31FWH223852012
Current price is Now $48.99
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was $69.00
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