HTC U12+

Best-ever HTC BoomSound, USonic, and Qualcomm® aptX™ HD audio: Incredible, pulse-pounding sound with louder-than-ever BoomSound speakers and USonic earbuds featuring Active Noise Cancellation to keep out unwanted distractions. USonic matches the unique structure of your ear to shape the sound perfectly for you, so you hear every high note with crystal-clear precision and every bassline with thundering power. For wireless audio that goes way beyond expectations, aptX HD is designed to support high resolution 24-bit Bluetooth audio.

Key aptX™ Features

Consistent audio quality

Fixed compression ratio ensures consistency

Full spectrum of sound

From 20Hz to 20kHz, aptX audio covers the human hearing range

Interoperability testing program

We operate rigorous testing for all aptX enabled products, so you can be confident all products will deliver the same audio quality

aptX™ Tech Specifications

Sound quality
  • THD+N@1kHz: -67dB
  • SNR@1kHz:  93dB
  • PEAQ audio quality:-0.18
  • Qualcomm® Kalimba™ MHz DSP technology: 42MHz@48KHz stereo decode ~45MHz@48KHz stereo encode
Audio Encoding
  • 16-bit, up to 48kHz sampling rate
Program memory usage
  • 3.3kwords (encoder) / 3.6kwords (decoder) 
Data memory usage
  • 1.8kwords
ARM MHz
  • ~63MHz (stereo encode) on ARMv7A with NEON 
Bit Rate
  • 384 kbps (48 kHz sampling)