The ASUS ZenFone 5z supports Qualcomm® aptX™ HD audio technology for high quality music streaming over Bluetooth.
aptX HD is designed to deliver 24-bit wireless HD audio wirelessly over Bluetooth
aptX HD has been engineered to improve the signal-to-noise ratio, resulting in lower background noise
With lower Total Harmonic Distortion (THD) and no audio artifacts you can enjoy your music with hardly any interference using Qualcomm aptX HD