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SD 400.4D EVO



THE NEW EVOLUTION LINE is here to stay and has every resource to produce the perfect sound. Quality, efficiency, stability, onboard crossover and innovative design.

Soundigital has taken care of every single detail and has put an end to the EMI interference which used to limit the use of AM and FM radio. Now you can listen to your favorite radio station with no interferences.

The Evolution line is the first on to have Hi-fi (high fidelity) performance even in the highest power rates with a THD (Total Harmonic Distortion) under 0,025%. It also has a patented harmonic alignment processing that places it above any similar product in the world market.

Now featuring a linear power supply with an efficiency over 90%, it is able to produce solid and longer bass sounds with the lowest consumption ever. When in standby, it can consume up to 5 times less than other products in the market.

Innovate you too and acquire what’s best in the audio world.


  • Power @ 12.6V @ 2Ω: 4 x 100 W RMS
  • Power @ 12.6V @ 2Ω: 4 x 55 W RMS
  • Bridge Power @ 12.6V @ 4Ω: 2 x 200 W RMS
  • Power @ 14.4V @ 2Ω: 4 x 131 W RMS
  • Power @ 14.4V @ 4Ω: 4 x 72 W RMS
  • Bridge Power @ 14.4V @ 4Ω: 2 x 261 W RMS
  • Operating Voltage: 9V – 16V
  • Current Draw (Music): 25A
  • Current Draw (Max): 50A
  • THD + N (10% Rated Power): 0,009%
  • Damping Factor: >56 (channel)
  • SNR: 88dB
  • Frequency Response: 5 Hz – 20 kHz
  • High Pass Filter: 80Hz
  • Low Pass Filter: 80Hz
  • Recommended Fuse: 25 A