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Price: Between S$1,000 to S$3,000

Equally at home as a stand alone DAC, headphone amp, or digital preamp, the Codex can unlock the potential of any system. A fully-balanced signal path throughout the analog circuitry provides an inherently clean and quiet backdrop for your music. The zero-feedback design maintains all of the pace and rhythm of your favorite artist, rendering your digital music as effortlessly as if it were live.

“I don’t know if it’s due to the “zero negative feedback” design or the killer digital filters Charlie Hanson dreams up, but with file resolutions of PCM up to 32/384 and DSD128 the Codex is just plain musical. Can’t wait to get one up here for a long hard listen. ” – Tyll Hertsens,


  • USB and Optical (Toslink) inputs
  • Headphone outputs
  • Two 3.5mm mini-phone jacks.
One ¼” phone jack.
  • 5mm mini-phone jacks configurable to balanced mode.
  • Asynchronous transfer mode for USB input.
  • DSD or PCM input over USB.
  • Minimum phase digital filter.
  • Single-pass 16x oversampling.
  • Ayre’s exclusive Diamond output circuit
  • Linear analog AyreLock power supply
  • zero-feedback, fully-balanced discrete circuitry.
  • Equilock circuitry for active gain devices.


Frequency ResponseDC – 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 – 160 kHz (352.8 kHz sample rate)

DC – 176 kHz (384 kHz sample rate)

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

DC – 160 kHz (5.6448 MHz sample rate – DoP)

Signal/Noise110 dB (unweighted)
Output Level Headphone or Preamp Modes7.2 volts balanced, 3.1 volts single-ended
Output Level DAC Mode4 volts balanced, 2 volts single-ended

PCM 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz, 352.8 kHz, 384 kHz (up to 24 bits), DSD64, DSD128

Optical input (Toslink)

Dimensions2.25″W x 9″D x 5.25″H

(5.5 cm x 23 cm x 13.7 cm)

Weight3 pounds (1.4 kg)


Ayre Codex Literature


stereophile_ayre_acoustics_codex_headphone_amplifier“…Taking into account the price difference with the QB-9DSD ($3450), the Codex is the most value-packed DAC in the Ayre Acoustics repertoire, and its modest enclosure hides a pyramid of technological achievement rarely available at this price point.” — Jon Iverson (Stereophile — May 2016)


audio_stream_ayre_codex“…I feel that Ayre has accomplished something very special in the design of the Codex that will force other DAC manufacturers to improve their products or fall behind. Given the price, performance, and features found in the Codex, I feel it is the most significant product I have reviewed in 2015.” — Steven Plaskin (Audio Stream — December 2015)


head-fi_ayre_codex“…The Codex is an outstanding DAC/amp, especially at its $1795 price. I could easily see it as an end game DAC/Amp solution for a large segment of headphone users. It may even be the end game solution for me.”

 — Austinpop (Head-Fi — March 2016)


the_closet_audiophile_ayre_codex” … The Codex may not be the most flashy piece of gear to grace a desktop, but it truly delivers the goods where it counts. It’s almost as if they shrunk an AX-5 Twenty to power headphones … In a world where some hi-fi components do an excellent job at reproducing sound, I feel that the Ayre Codex is built to make music and deserves a place at the top of anyone’s shortlist. Very highly recommended.” — The Closet Audiophile — November 2015