Motorola Droid RAZR MAXX HD Smartphone

A single charge keeps Droid RAZR MAXX HD powered up for an eye-opening 32 hours of performance. Droid RAZR MAXX HD's 4.7" HD display delivers vibrant visual clarity—the kind you’d expect from an HDTV. Droid RAZR MAXX HD packs more battery power than all others, and yet is still only 9.3mm thin. Designed with innovative materials, Droid RAZR MAXX HD is ready to go anywhere. And with aptX™ inside you can lose the wires, with no loss of audio quality.

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
  • ~63MHz (stereo encode) on ARMv7A with NEON 
Bit Rate
  • 384 kbps (48 kHz sampling)