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Skar Audio

Skar Audio SA-50.4D 400 Watt Class D High Performance 4 Channel Car Amplifier

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Condition: Refurbished - Refurbished
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Availability: Only 2 left in stock, order soon!
Fulfilled by SKAR AUDIO
Arrives Thursday, Jan 29
Order within 16 hours and 18 minutes
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Size: SA-50.4D Four Channel


Features

  • 400-Watt 4-Channel Class D High Performance Amplifier
  • RMS Power at 2 Ohms: 100 Watts x 4 Channels | RMS Power at 4 Ohms: 60 Watts x 4 Channels
  • RMS Power @ 4 (Bridged): 110 Watts x 2 Channels | Operating Voltage: 8.5V - 16V
  • Crossover Controls: HPF / Full-Range / LPF | Adjust gain & crossover frequencies for Channels 1&2 and 3&4
  • Frequency Response: 10 Hz - 25 kHz | Power/Ground Input Size: 4 AWG

Brand: Skar Audio


Speaker Maximum Output Power: 400 Watts


Frequency Response: 10 Hz


Connectivity Technology: RCA, High-level inputs


Audio Output Mode: Mono


Mounting Type: Tabletop Mount


Model Name: SA-50.4D


Included Components: Skar Audio SA-50.4D


Item Weight: 6 Pounds


Warranty Type: Limited


Number of Items: 1


Control Method: Touch


UPC: 810028814691


Manufacturer: Skar Audio


Product Dimensions: 8.85 x 5.2 x 2.12 inches


Item Weight: 6 pounds


Item model number: SA-50.4D


Date First Available: March 2, 2025


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Jan 29

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
  • Affirm Pay in 4
  • Affirm Financing
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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Solid amp, great price
Size: SA-1500.1D Monoblock
Skeptical because of the price but once I hooked it up, yes!! This amp is great for the price! Plenty of power for a JL Audio 13TW5. Sounds great too, nice clean bass.
Reviewed in the United States on November 20, 2025 by Amazon Customer
    • Great price
Size: SA-125.4D Four Channel
Great amp lots of power
Reviewed in the United States on September 15, 2025 by Jonathan c adams
    • This amp could probably power a small city (or at least my truck and my sanity)
Size: SA-125.4D Four Channel
The Skar Audio SA 125.4D is an absolute monster. I hooked it up in my truck, hit play, and suddenly every molecule in the cabin is vibrating in perfect harmony with my playlist. Bass so deep it makes your teeth rattle, mids that make your favorite songs feel like they were just recorded in your brain, and highs so crisp you can hear your dog judging your music taste. It’s high performance in the purest sense this thing doesn’t just amplify music, it transforms your truck into a mobile concert hall, complete with fog machine, pyrotechnics, and probably a small mosh pit if you’re brave enough. Durable, ridiculously powerful, and a ton of fun, this amp makes every drive through the Alaskan wilderness feel like an epic action movie soundtrack. Warning: may attract moose, bears, or imaginary neighbors complaining about decibels that don’t exist. Absolutely insane, I’m officially obsessed. ... show more
Reviewed in the United States on November 26, 2025 by J148
    • Doesn’t work
Size: SA-1500.1D Monoblock
I bought the amp tried to instal everything and i couldnt get it to work. Took it to a stereo shop and they told me the amp has 0 output. They sold me a dud. Now i am paying labor charges for this messup and i have to get a new amp.
Reviewed in the United States on May 4, 2025 by Amazon Customer
    • Powerful & compact
Size: SA-1500.1D Monoblock
Very good small compact powerful amps🙌🏾
Reviewed in the United States on January 8, 2026 by Odell Haywood
    • Good amp with 1 design flaw
Size: SA-125.4D Four Channel
It's a good amp with accurate power ratings. My only complaint is once you mount the amp, it's almost impossible to remove the plug with the ground, power and remote turn on cables . You have to unscrew the amp to remove it because the clip you have to depress, as well as the screws that hold the wire face downward. It's an odd design choice but the amp functions well. ... show more
Reviewed in the United States on October 7, 2025 by Tommy
    • Quality is not the best but it works
Size: SA-1000.1D Monoblock
It works but sound quality isnt as good as higher end amplifiers. I blew my two slim skars with this amp so take it for what you will. They aren’t horrible but other amps like alpine of same power rating would sound way more clear for some reason.
Reviewed in the United States on August 14, 2025 by Cameron
    • Skar audio Rocks
Size: SA-125.4D Four Channel
Excellent amplifier. Has ability to be pushed hard and delivers excellent sound quality.
Reviewed in the United States on June 15, 2025 by Steve

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