That might be the case but without that audio chip, the sound quality is beyond horrific. It was already bad in the older units that ran TDA7388 amplifier and already had the chip.
Now you're getting YD7388 amp (that's a crappier version of already crappy TDA7388) and no audio chip.
Not even PowerAmp can help you, I'm afraid. Viper4Android can't do much either.
Luckily, for just a few dollars, you can upgrade to TDA7729 audio processing chip, then add TDA7850 amp powered by a 10,000 uf capacitor and install proper cooling system to support the insane power that TDA7850 produces. Then root your unit and install Viper4Android. Then with proper configuration, the sound quality from your Android will be on par with hi-end Android units, that for example Mercedes sells for £5,000 or more.
Check the video in my signature for more tips.