Ayre Codex



Ships From: United States (US)

Sold By : Ayre Acoustics
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Small packages can hold amazing things. The Codex is hand built in Colorado and perfect to start your first system or begin your second. 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.

“30-Day Satisfaction Guarantee:

At Ayre, we are confident that you will love the sound of our products and their outstanding build quality. If for any reason you aren’t happy with your Codex purchase, contact us within 30-days of receiving it and we will arrange for its return, issuing you a return authorization number and arranging a call tag or shipping label to return your product.  Once we have evaluated that the returned product is in like-new condition with all packaging and accessories, we will issue a FULL refund.  Please note that this policy applies to US sales only that are purchased through our Superphonica store or directly from Ayre Acoustics.”

MP Filter – Months of research went into the development of the new MP Digital filter. Read our white paper and see how we improved our optical disc players and why our QB-9 USB DAC is astonishing people worldwide!
Fully-balanced Circuitry – Balanced circuitry is a special dual configuration that rejects noise and interference—not only from external cables, but also from the AC power line itself. In an Ayre component even the signals from conventional sources are converted to the balanced format, resulting in vivid, lifelike performances, presented against an uncannily quiet background.
Zero-feedback Design – Conventional designs use negative feedback to compare the output signal to the input signal, which introduces time-domain errors and other artifacts. In contrast, Ayre’s exclusive zero-feedback circuits are designed for intrinsically pure linearity, delivering performance that is coherent and natural.
E-I Core Transformers – E-I core transformers provide superior rejection of AC line noise compared to commonly used toroidal designs. This keeps radio frequency interference (RFI) out of the sensitive audio circuitry maintaining the purity of your musical signal.
The AyreConditioner – Keeping its cool in the noisiest of environments the Ayre Conditioner dissipates high-frequency power line interference as harmless thermal energy, delivering pure AC power to the circuitry. Built entirely from non-magnetic materials, its stable performance will always provide clean current for a deeper and richer sonic experience.
  • USB and Optical (Toslink) inputs
  • Headphone outputs Two 3.5mm mini-phone jacks. One ¼” phone jack.
  • 3.5mm 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, fullybalanced discrete circuitry.
  • Equilock circuitry for active gain devices.

Output Level
Headphone or Preamp Mode : 7.0 volts balanced, 3.5 volts single-ended
DAC Mode : 4.0 volts balanced, 2.0 volts single-ended

USB : 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)

2.25″W x 9″D x 5.25″H (5.5 cm x 23 cm x 13.7 cm)

3 pounds (1.4 kg)Weight

Additional information


Ayre Acoustics






Brand New (10/10)

Shipping costs

Country State Cost
United States (US) Any $0.00
Canada Any $0.00

Shipping Details

Shipping from United States (US)