I bought this specific radio and it was a very good upgrade from the factory one. However, I don't think it is a 400-watt power source as I saw in the manual. The manufacturer asks for a 15-amp fuse with a 2mm cable directly from the battery. I calculated it and 15A * 12V = 180, assuming the battery is fully charged, it would be around 13 to 14 volts. So, it would play at around 195 to 210 watts. I don't know if it can accept a larger fuse and reach 400 watts with a 30-amp fuse. Even if it did, I don't think it would be safe for the battery if it happens for a long period of time due to discharges that it can't handle. I'm saying all this not as an electrician but as a mechanical engineer with basic knowledge of electricity. Anyway, it is a very reliable radio with many functions, except for the USB through the application, which definitely doesn't work. However, it does have the aux and does not have Bluetooth, which was known from the beginning.

Very good sound system, I have installed it with 4 trf 6.5" and it rocks... the only issue is that it doesn't have Bluetooth!

In Getz 2005 with mom speakers the sound is incredible.
Until a certain point, of course, when the paper factory speakers can withstand.
I had to use whatever filter it had, but with these speakers the result is UNBELIEVABLE

Simply amazing source. It is 4x50 watt rms. To play properly, it needs to be directly connected to the car battery. It also requires a separate grounding. It has detailed instructions in the manual. With a good pair of speakers and an active subwoofer, you can upgrade the sound system without the need to purchase an additional amplifier, as the digital amplifier has all the power needed. I have combined it with a pair of Alpine SXE-1350s in the front and a pair of Kenwood KFC-E1355 in the rear. My conclusion is that it requires something better in terms of quality to perform at its maximum. The 5 stars are not enough for the money it costs :)

Flawless, the only problem is that when I turn up the music loud, after a while it gives me an AMP-ERROR.

EDIT: The source is connected to 4 speakers, 2 horns, 2 amplifiers, and a 13-inch bass, and it plays crystal clear sound, really. It beats sources worth 200-300 euros. The sound doesn't distort at all, not even a bit. It's not for simple speakers, but to build a decent sound system

Very good sound quality!
The digital amplifier provides the necessary power so that with a quality pair of speakers and proper placement, it performs better than the usual 4x50Watt audio systems! It also produces less heat!
If you are not interested in Bluetooth to connect your mobile, it is the best choice for its price and even compared to higher-priced audio systems (~200 euros)!