The kernel, BlueZ 5, and PipeWire support all three profiles. LE Audio is a low-energy audio standard announced in 2020.HFP/HSP (hands-free/headset) provides voice-grade mono output and input.AVRCP is used on top of A2DP to provide playback control.The standard SBC has a poor quality-bitrate tradeoff, but much better, open-source alternatives (LDAC, AptX) have become widespread. A2DP (advanced audio distribution) provides music-grade stereo output (sink), typically without input (source).
