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SounDigital

SounDigital Amplifier (400W 4 Channels)

  • Based on 373 reviews
Condition: New
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$59.00 Why this price?
4th of July Sale · 21% off was $75.00

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Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, Jul 4
Order within 14 hours and 4 minutes
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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 (DC)


Manufacturer: SounDigital


Maximum Supply Voltage: 16 Volts (DC)


Minimum Supply Voltage: 8 Volts


Voltage: 8 Volts (DC)


Maximum Supply Voltage: 16 Volts (DC)


Minimum Supply Voltage: 8 Volts


Mounting Type: Speaker


Number of Channels: 4


Output Power: 400 Watts


Package Type Name: Box


Supply Current: 39 Amps


Maximum Output Power: 400 watts


Item Dimensions: 4.33 x 4.33 x 1.97 inches


Material Type: Electronic Components


Manufacturer: SounDigital


Model: 400.4 EVO 4.0


Brand Name: SounDigital


Part Number: SD 400.4 EVO 4.0


Included Components: Soun digital Amplifier and manual


Unit Count: 1.0 Count


Specification Met: FCC


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Jul 4

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.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • 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.
    • Tiny and powerfull
I was hesitant at 1st because I'm old school and back in the day if you wanted power, You needed size. Not anymore apparently. After reading reviews and seeing dyno results I gave this tiny Amp a try. It didn't disappoint me. Putting out a true 65 watts per channel rms. I have it powering my 2 6 1/2 door speakers and 2 4" and 2 4x6 in the rear. Plenty to get the speakers moving. No clipping or engine noise. If your looking for a small Amp that will be enough to power your mids and highs, this Amp is perfect. Knowing the size I can and will use on my next motorcycle system ... show more
Reviewed in the United States on July 20, 2024 by Who me?
    • 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
    • Good for price
Quality item, very cheap. Powers four 6x9 with no problem
Reviewed in the United States on May 20, 2026 by Ahti Vaarmann
    • Replaced Bose amp in 01 suburban with this
Little amp, easy to hide. Installed like any large amp just used a 12 gauge power wire and that seemed over kill with a 25 amp inline fuse, but good value for buck replaced the Bose one in my 01 suburban with it
Reviewed in the United States on May 12, 2026 by Saving money
    • This little thing's amazing
Freaking amazing if you know how to wire up an amp old school you are going to be completely impressed with this little package
Reviewed in the United States on June 4, 2026 by Keith H.
    • Seems like junk
I don't know if I got some refurbished amps ,but no sound out of any an I bought 3
Reviewed in the United States on April 20, 2026 by Scooby Doo
    • 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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