Ayre Acoustics Codex D/A headphone amplifier Specifications

Sidebar 1: Specifications

Description: D/A headphone amplifier. Digital inputs: 1 USB (Type B), 1 optical (TosLink). Input formats/resolutions: PCM (44.1, 48, 88.2, 96, 176.4, 192, 352.8, 384kHz, up to 24 bits), DSD (DSD64, DSD128). Analog outputs: 2 single-ended (RCA and ¼" headphone jack), 2 balanced (XLR and two 3.5mm headphone jacks). Maximum output level: headphone or preamp mode, 7.0V balanced, 3.5V single-ended; DAC mode, 4.0V balanced, 2.0V single-ended.
Dimensions: 5.3" (137mm) H by 2.1" (55mm) W by 9" (230mm) D. Weight: 3.1 lbs (1.4kg).
Serial number of unit reviewed: 25C0205.
Price: $1795. Approximate number of dealers 42. Warranty: 5 years.
Manufacturer: Ayre Acoustics, Inc., 2300-B Central Avenue, Boulder, CO 80301. Tel: (303) 442-7300. Fax: (303) 442-7301. Web: www.ayre.com.

Ayre Acoustics, Inc.
2300-B Central Avenue
Boulder, CO 80301
(303) 442-7300

headphile's picture

It seems like a missed opportunity to not have Tyll Hertsens at least co-author headphone reviews when they are posted to Stereophile instead of Innerfidelity (Stereophile's review of the Chord Hugo TT is another example of this). I am an avid reader of The Enthusiast Network's audiophile websites and I have consistently found Tyll to be a trusted reviewer with invaluable headphone experience. His reviews include accurate comparisons and measurements that give useful context that can be used to make informed purchase decisions. I hope in the future more reviews like this will at least be co-authored by Tyll or posted to Innerfidelity.

Jon Iverson's picture
Great idea - will see if this is possible for the next headphone/DAC review.
cgh's picture

... watch stuff grow.

lennykp's picture

Did you try AYRE Codex as balance preamp? how does it perform?
Please ask manufacturer if USA model work on 240V also?

acuvox's picture

Ayre Acoustics has always scrupulously minimized or avoided generating RFI signals in its boxes. This means putting the control micro to sleep or hibernating, analog power supplies and static, non-matrixed displays.

This example is retro visually. The seven segment LED display goes back to the first pocket calculators from Bowmar in 1971, and the first digital watch in 1967. Pin count was a major issue, so calculator displays where multiplexed, switching the digits on and off in succession on the first microprocessors.

For only two digits, you just need 14 pins for the segments to run on DC. The extra 5 pins are insignificantly expensive in parts cost and circuit board space, but this critical design decision improves sound quality better than expensive internal mu metal shielding.