If I send audio files by cable from the phone to the PC or with me now to the laptop, the quality remains the same without listening to the pc then worse. It's about a song.
The quality of the audio file remains the same.
It is an exact copy, so the quality does not change.
The quality of the audio file itself remains the same, but if your laptop speaker is not so good, it may of course be that the song sounds worse then it actually is.