ok, you are probably correct. BT music from my iPhone to my car stereo sounds bad. There I cant verify what codec or bitrate is used, but clearly is a differen

ok, you are probably correct. BT music from my iPhone to my car stereo sounds bad. There I cant verify what codec or bitrate is used, but clearly is a difference when comparing to a music file played from an SD card reader on the dashboard. I also have a pair of Sony bluetooth headphones that I use with my MacBook, here the sound is awful, until I use a BT utility to choose aptX instead, that they also supports, but SBC is default selected anyway.