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SounDigital

SounDigital Amplifier (400W 4 Channels)

  • Based on 403 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Sep 8
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Features

  • 400W total power output
  • Four channels for versatile speaker configurations
  • SounDigital car audio amplifier
  • Compact and durable design
  • Supports various speaker configurations

Description

SounDigital Brazilian Amplifiers In absolute preview NEW EVO LINE The brand new EVO line is the latest born from SounDigital the world's number one manufacturer of Class D Amplifiers. Extremely small size, small footprint and great power!! Main Specifications 400.4 EVO Amplifier Type 4 Channel Class D Output Power 2Ω 12.6V 4x100 Watts RMS - 14.4V: 4x125 Watts RMS 4x66 Watts RMS on 4Ω 4x74 Watts RMS on 4Ω 14.4V 2x200 watt Rms 4 Ω Bridge Crossover HPF 80Hz 12dB /8ª Crossover LPF 80Hz 12dB /8ª Dimensions 109 mm x 113 x 50 mm Frequency Response 10 Hz - 20000 Hz Total Efficiency: 82% Damping Factor: 200 SNR: 88dB THD + + + N (10% Rated Power): 0.1% Operating voltage: 8V to 16V Max consumption: 39A Recommended fuse (Music): 20A Min consumption: 0.5A

Item dimensions L x W x H: 4.33 x 4.33 x 1.97 inches


Voltage: 8 volts_of_direct_current


Manufacturer: SounDigital


Maximum Supply Voltage: 16 volts_of_direct_current


Minimum Supply Voltage: 8 volts


Voltage: 8 volts_of_direct_current


Maximum Supply Voltage: 16 volts_of_direct_current


Minimum Supply Voltage: 8 volts


Mounting Type: Speaker


Number of Channels: 4


Output Power: 400 watts


Package Type Name: Box


Supply Current: 39 A


Maximum Output Power: 400 watts


Item Dimensions: 4.33 x 4.33 x 1.97 inches


Material Type: Electronic Components


Specification Met: FCC


Manufacturer: SounDigital


Model: 400.4 EVO 4.0


Brand Name: SounDigital


Number of Items: 1


Unit Count: 1 Count


Number of Packs: 1


Included Components: Soun digital Amplifier and manual


Part Number: SD 400.4 EVO 4.0


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Sep 8

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Top Amazon Reviews

    • Great little amp
For the money, this is a no brainer to step up from junk internal head unit amp. Transformed my audio so much I will be ordering another for my truck. Sound is clear, install was a breeze, plenty of power, and it fit behind the dash for a simple, install. The quality of the housing and sound was better than expected especially for the low price. ... show more
Reviewed in the United States on July 3, 2026 by Anthony Hancock
    • Tiny but Mighty!
I used to have a Power Acoustik 2500 watt amp for my 2020 Ford Mustang. That thing could barely take 300 watts RMS despite the rating. When it finally went out, I bought this micro amp after I saw a guy on YouTube power 4 kicker solo baric subs with it. I was like “no way this tiny thing will perform like that!” Boy was I wrong! This little guy packs one hell of a punch, especially for 60 bucks! Not to mention the sound quality is so much better than that Walmart amp I bought. I have it hooked up to two Planet Audio AC10D’s in my Mustang and I couldn’t be more impressed! ... show more
Reviewed in the United States on July 12, 2026 by Austin
    • Tiny but mighty
This little thing rocks. Small enough to hide anywhere in the vehicle.
Reviewed in the United States on July 8, 2026 by jerry areola
    • The truth
Its worth every dollar , very power to be so small , love it an will buy another next week for my bike
Reviewed in the United States on June 12, 2026 by Lamar L.
    • Sound Digital, Game changer!
9-17-25 I give this very tiny lil amp 5 stars so far!! I actually am using it passed thru my Fosgate RX500D amp....It is clean no humming no no hissing in the 2 RF P3 speakers I have in my back dash. I totally played myself by purchasing the Boss CE102 to drive the P3s which was an absolute disaster...that amp is so terrible it pushed interference thru my P3s and my 12" Kicker sub...I thought it was my grounds, RCAs, etc until I started process of elimination. SD EVO is clean and crisp and very small so concealing it is very easy...my only gripe is the speaker terminals are right next to the power terminals but they obviously did some expert engineering...again the lil thing sounds clean. ... show more
Reviewed in the United States on September 18, 2025 by PrynceAl
    • First time buying the brand. Never again
Bought two of these amps cause of the small package, price and the good reviews but man was that a bad choice. Both amps have been making a high pitch noise straight out of the box with the gains all the way down, even with the rca’s disconnected. Have checked my connections, swapped out rca’s, relocated grounds, swapped out my dsp and even put in inline filters to try to stop it. Even had a problem with the 800.4 with no sound brand new out of the box. Put some older amps in and every thing works perfect. ... show more
Reviewed in the United States on July 2, 2026 by Amazon Customer
    • It's awesome
Omg what a difference. My only complaint is the power and remote turn on are so close they were touching and I couldn't figure out why the amp wasn't turning off when I turned my truck off. Once I figured it out I was very happy. For $60 its awesome
Reviewed in the United States on July 19, 2026 by Michael Grindstaff
    • Tiny but mighty
This amp hits for being so small. It does have a little buzz at low volume. But not when playing music. Very happy with the performance. Pushes my 6x9s that can handle 120 watts with ease, and gain is lowered so I don't burn them out.
Reviewed in the United States on January 29, 2026 by Gee Money

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