most bluetooth devices support APTx/LDAC/AAC but due to liscensing isn't capable. macOS used to have AptX support baked in but they removed it some time ago
@Jes for some reason I couldn’t get it to work with pipewire or pulseaudio (only sbc and higher bitrate versions of it are listed in pactl send-message /card/bluez_card.<address>/bluez list-codecs) with headphones that support aptX or AAC
@Jes actually never mind, I thought I was using pipewire on alpine but I was actually still using pulseaudio. now I switched to pipewire and AAC works (so it's working with pipewire but not with pulseaudio)
@Jes at some point I need to figure out how to switch to pipewire on guix (it seems to be a guix home service, and I've never used guix home (I started using guix before it existed))