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PRV Audio QS400.4 2 Ohm Mini Compact 4 Channel Car Audio Amplifier 4 x 100 Watts RMS at 2 Ohm - 400 Watt Amp Stereo 12 Volts Amp Class D Full Range Bridgeable

  • Based on 186 reviews
Condition: New
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Availability: 20 left in stock
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Arrives Saturday, Aug 22
Order within 14 hours and 19 minutes
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Features

  • 4 x 100 watts TRUE RMS certified at full range output Digital Class D Brazilian Technology
  • 4 Channel car audio amplifier stable at 2 Ohm gives you the benefit of wiring multiple speakers and dividing the power per channel.
  • Engineered to be the most efficient full range amplifier so that you can get the most out of your vehicles electrical system!
  • A small footprint and compact chassis make this amplifier easy to install anywhere in the vehicle: 4 Wide x 5.40 Length x 2 Height
  • 2 Channel Bridged - double the power output to your speakers by bridging two channels. Minimum impedance of 4 Ohms per bridged channel at output power of 2 x 200 Watts RMS.

Description

THE PRO AUDIO SPEAKER COMPANY 4 x 100 watts TRUE RMS at full range output Digital Class D Brazilian Technology. 4 Channel car audio amplifier stable at 2 Ohm gives you the benefit of wiring multiple speakers and dividing the power per channel. QS Series 4 Channel amplifiers, also are available on QS800.4 and QS1200.4 QS Series amplifiers are all about efficient design capable of full-range frequency response at a great price! Engineered to be the most efficient full range amplifier so that you can get the most out of your vehicle’s electrical system! A small footprint and compact chassis make this amplifier easy to install anywhere in the vehicle: 4″ Wide x 5.40″ Length x 2″ Height 2 Channel Bridged – double the power output to your speakers by bridging two channels. Minimum impedance of 4 Ohms per bridged channel at output power of 2 x 200 Watts RMS.

Item dimensions L x W x H: 5.4 x 4 x 2 inches


Voltage: 12 volts


Manufacturer: PRV Audio


Maximum Supply Voltage: 12 volts_of_direct_current


Minimum Supply Voltage: 9 volts_of_direct_current


Voltage: 12 volts


Maximum Supply Voltage: 12 volts_of_direct_current


Minimum Supply Voltage: 9 volts_of_direct_current


Mounting Type: Surface Mount


Number of Channels: 4


Output Power: 400 watts


Maximum Output Power: 100 watts per channel


Item Dimensions: 5.4 x 4 x 2 inches


Material Type: Aluminum


Manufacturer: PRV Audio


Model: QS400.4 2 Ohm


Brand Name: PRV AUDIO


Unit Count: 1 Count


UPC: 810075523898


Included Components: PRV Audio QS400.4 2 Ohm Mini Compact 4 Channel Car Audio Amplifier


Part Number: QS400.4 2 Ohm


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Aug 22

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.

  • Klarna Financing
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  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Great quality
A lot of power with clean sound
Reviewed in the United States on July 12, 2026 by Kenneth Lewis

  • Very satisfied.
Great product for the money. Works great on my Roadglide.
Reviewed in the United States on May 28, 2026 by John

  • PRV is the way to go!
Very small, performance is very nice, and good power!
Reviewed in the United States on January 10, 2026 by Carlos

  • Gets hot but seems good quality
Super improvement over stock but gets hot. I’m using for modest gains, not drastic performance.
Reviewed in the United States on July 27, 2026 by Christopher Robertson

  • Strong amplifier
Very powerful small amplifier made my 6x9 and door speakers louder
Reviewed in the United States on July 29, 2026 by aaron larry

  • Is the best purchase
I thought it was excellent, it was perfect, the most incredible thing is that I can touch the screen and it doesn't lock at all.
Reviewed in the United States on June 24, 2026 by Karla Mendoza

  • Sounds good
So.far so good. Have it hooked to.2 door speakers and 2 tweeters and it sounds really good. I haven't had it overheat yet but I haven't had it running for long periods of time.
Reviewed in the United States on May 18, 2026 by zach stokes

  • Don’T BUY!
Do not buy this. Spend the extra money and get something a little better. Channels 1 & 2 both don’t work. I’ve been waiting for a replacement through Amazon but their customer service sucks. They said they sent it but it’s saying shipment delayed. But if I purchase another one it says it’ll be here in the morning. It’s been 3 days and still haven’t gotten any response that I will be receiving it any time sooner. I’m putting a small system in for a client and now I’m behind because of this set back. ... show more
Reviewed in the United States on July 12, 2026 by Darielys Molina

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