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🎵 Small Amp, Big Impact — Elevate Your Ride’s Sound Game!
The SounDigital 400.4 EVO is a compact yet powerful 4-channel Class D car amplifier delivering up to 400 watts RMS. Engineered in Brazil, it offers versatile speaker configurations, high efficiency (82%), and exceptional audio clarity with low distortion and high damping factor. Its small footprint and durable design make it the go-to choice for audiophiles seeking premium sound without compromise.
| Asin | B09BZ8PNVR |
| Best Sellers Rank | #7,901 in Electronics (See Top 100 in Electronics) #9 in Car Multichannel Amplifiers |
| Brand Name | SounDigital |
| Customer Reviews | 4.4 4.4 out of 5 stars (372) 4.4 out of 5 stars |
| Included Components | Soun digital Amplifier and manual |
| Item Dimensions | 4.33 x 4.33 x 1.97 inches |
| Manufacturer | SounDigital |
| Material Type | Electronic Components |
| Maximum Output Power | 400 watts |
| Maximum Supply Voltage | 16 Volts (DC) |
| Minimum Supply Voltage | 8 Volts |
| Model | 400.4 EVO 4.0 |
| Mounting Type | Speaker |
| Number Of Channels | 4 |
| Output Power | 400 Watts |
| Package Type Name | Box |
| Part Number | SD 400.4 EVO 4.0 |
| Specification Met | FCC |
| Supply Current | 39 Amps |
| Unit Count | 1.0 Count |
| Voltage | 8 Volts (DC) |
User
The truth
Its worth every dollar , very power to be so small , love it an will buy another next week for my bike
User
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
User
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.
User
Good for price
Quality item, very cheap. Powers four 6x9 with no problem
User
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
User
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
User
Seems like junk
I don't know if I got some refurbished amps ,but no sound out of any an I bought 3
User
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.
User
Muito bom
Produto bom uso bastante
User
Sd400.4
Fonctionne correctement super ampli
User
Muy compacto
Muy potente y compacto me gustó trabajando diario ya por medio año
User
great mini amp. powerful for its size.
these work well in all applications. I have them in a few cars and they push more power than amps of much bigger size.
User
Perfetto
È piccolo ma potente sono felice per il mio acquisto
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