Codex
PX-8 Phono Preamplifier
QA-9 Pro
KX-8 Variable Gain Preamplifier
VX-8 Power Amplifier
CX-8 CD Player
QB-9 USB DAC
V-5xe
K-5xeMP
C-5xeMP
D-1xe
Codex
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.
To get the best possible sound from the USB input of your Codex please refer to our 
computer audio setup page.
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 and fully-balanced 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
Input
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) : Up to 24 bit-192 kHz
Dimensions
2.25″W x 9″D x 5.25″H (5.5 cm x 23 cm x 13.7 cm)
Weight
3 pounds (1.4 kg)
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I don't know if it's due to the "zero negative feedback" design or the killer digital filters Charlie Hansen 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. 