Qualcomm aptX HD was designed to answer the growing demand for high resolution audio. This enhanced codec supports 24-bit music quality over Bluetooth.

Qualcomm® aptX™ audio technology powers hi-res wireless audio behind many of the world's finest Bluetooth® smartphones, speakers, transmitters and headphones.

aptX (until 2010 apt-X, "apt" stand for Audio Processing Technology) is a family of proprietary audio codec compression algorithms owned by Qualcomm...

aptX HD isn't something that any equipment can deliver. It's something Qualcomm developed (as was the original aptX and all variants of it) and you need their hardware as well as their software.

aptX HD is here, and it promises to bring hi-res audio to Bluetooth devices. In January 2016 they launched aptX HD, a Bluetooth codec capable of wirelessly transmitting 24-bit hi-res audio.