And there are plenty of class-leading headphones we've heard, such as the Sony WH-1000XM3, Bowers & Wilkins PI3 and Beyerdynamic Amiron Wireless, that use it. Whether it is a match for a wired hi-res signal is debatable, and straightforward comparisons are tricky as you can't turn aptX HD on or off on products as a means of discerning differences in sound quality, but Qualcomm is boldly gunning for ‘better-than-CD’ sound quality here with its wording.
Compression remains at a ratio of 4:1, with a bitrate of 576kbps.
It was released in reaction to the increasing popularity of hi-res audio and it supports audio at 24-bit/48kHz.
