U disk is decoded and played directly without attenuation. Bluetooth will be attenuated in transmission, and the music is not rich enough, but this is not absolute. Good Bluetooth transceiver will be very professional. Now all major brands have introduced Bluetooth audio. The advantage is that it is convenient for wireless, but the disadvantage is that the sound quality is not as good as wired connection.
Is it better to use Bluetooth or aux to listen to songs on your mobile phone in the car?
AuX is better.
The best is vinyl CD. Vinyl CD adopts exclusive patented technology and artistic treatment, even on ordinary CD players, you can enjoy the music like vinyl records. Vinyl CD is compatible with the high fidelity of vinyl and the low noise of CD, creating a new era of wonderful sound, and the new technology of German master recording is more refined and revolutionary, recording the scene and giving music itself.