Bluetooth was never designed for audio usage. Revisions over the years have shoehorned functionality into what is effectively an FTP protocol. There's also the

Bluetooth was never designed for audio usage. Revisions over the years have shoehorned functionality into what is effectively an FTP protocol. There's also the compression and audio mangling that bluetooth does. You do not get this with a straight through audio cable (or some other wireless technologies that don't compress)