The sound quality I think same or even better. Reason being, the T9 has preset settings and or you can make your own.
But to be honest with you, the t9 has some issues which I had to work with the CTH group on FB to resolve.
1. I was getting no audio. I had to go into the settings and set an option to another mode. Once I switched it, I got audio.
2. Initially my CarPlay has only 4 icons across. I had to update the Tlink app to get the 5 icons.
3. I think there’s something wrong with my canbus. So I’ll either get audio that fades down and up or sometimes no audio. I have to unplug the canbus to stop the audio fading. CTH is sending me another canbus.
4. In CarPlay mode, sometimes Siri can’t read back my messages. She can’t access the internet. I ordered an add on wireless CarPlay dongle. I’m hoping, it will fix the issue. Currently I’m using the native wireless CarPlay which comes With the t9.
So those where/are my main 4 issues . Basically I fixed 2/4 so far. But the support is really good so far. I mainly use it for FM and CarPlay. I know this thing has many other android apps which I haven’t tried yet, perhaps later.
If your a type of person who likes to tinker and debug things, the t9 is for you. But if you want an out of the box hassle free stereo, then the t9 is not for you [emoji40]