Vertu Signature Touch Smartphone

Signature Touch, the new Android™ smartphone from Vertu, the English manufacturer of luxury mobile phones, blends best-in-class technology with superior materials, from grade 5 titanium to hand-finished calf leather. Signature Torch also supports aptX™ high-quality encoded audio, for superior sound from compatible Bluetooth® devices.

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)