Tidal HiFi Quality/ Bluetooth Quality.

[cu3ed]

So decided to give Tidal a try ( liking the UI more already).
However, within music quality, i'm confused about how much im getting if I spend the extra for the Hifi quality.
a lot of my music is done Via my own car system ( components Sub etc) Via Bluetooth. ( Samsung S9 to Kenwood Bluetooth V3).
What i'm I really getting if anything at all with the higher quality, or is it a waste with jsut a connection?
I have noticed a difference in my Jabras, less tinny highs and that digital distorted sound on some tracks etc.

 

[cu3ed]

Will have to run a few tests, but had higher quality Bitrates on my iPod when connected to the Headunit and there was a notable warmth covering the baselines in tracks. Could be of course just a better connection.
Will have to see if there an Aux/ 3.5mm input to the head unit.