Bluetooth isn't really compatible with accurate sound reproduction. The bandwidth is limited so the audio spec mandates lossy compression. An update to the or

Bluetooth isn't really compatible with accurate sound reproduction. The bandwidth is limited so the audio spec mandates lossy compression. An update to the original allows different options for the compression, so if you're starting with a compressed source you might be able to avoid double losses, but I doubt that any software does it that way because you'd lose the ability to do e.g. volume control.