Norman Audio

Price: $1,900

Customer Pre-owned Unit

Perfectly proportioned, the Ayre QB-9 DSD is destined to convert your computer into an uncompromised digital library of your favorite music. A simple USB connection engages the Asynchronous transfer mode ensuring accurately timed music with jitter levels over a hundred times lower than previous USB solutions. Their minimum phase digital filter and single-pass 16x oversampling

technology release layers of musical resolution—uncovering the emotional soul of your music.


  • Asynchronous transfer mode for USB input.
  • DSD or PCM input over USB.
  • Minimum phase digital filter.
  • Single-pass 16x oversampling.
  • zero-feedback, fully-balanced discrete circuitry.
  • Equilock circuitry for active gain devices.
  • Ayre Conditioner power-line RFI filter.
  • AyreLink communication system.


Frequency Response

DC – 20 kHz (44.1 kHz sample rate)

DC – 22 kHz (48 kHz sample rate)

DC – 40 kHz (88.2 kHz sample rate)

DC – 44 kHz (96 kHz sample rate)

DC – 80 kHz (176.4 kHz sample rate)

DC – 88 kHz (192 kHz sample rate)

DC – 80 kHz (2.8224 MHz sample rate – DoP )

Signal/Noise110 dB (unweighted)
Output Level 4 volts balanced, 2 volts single-ended
Input1 USBPCM 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz (up to 24 bits), DSD64
Dimensions8.5″ W x 11.5″ D x 3″ H
(21.5cm x 29cm x 7.5cm)
Weight5 pounds (2.3 kg)