The XDA-2 connects to all your digital music sources—computer, media player, CD transport, and more—and delivers audiophile-quality sound. With its precision analog resistor ladder volume control that maintains resolution even at low volumes, the XDA-2 is an ideal digital preamp. At the same time, its discrete, high-current headphone amplifier drives headphones with authority.

The XDA-2 is the ideal way to enhance the sound quality of virtually any audio system. No matter your digital source—or sources—the XDA-2 is ready, with multiple optical and coaxial inputs, as well as 24/192 USB for easy connection to your computer. Emotiva’s Differential Reference™ topology, combined with an asynchronous sample rate converter to remove jitter, delivers exceptional sound quality. Coupled with the convenience of a front-panel alphanumeric display and a full-function machined aluminum remote control, there’s no better value in DACs today.

The nerve center of your modern digital audio system.

Features

• Three audiophile-quality components in one: USB DAC, digital preamp, and high-current headphone amplifier.
• Full 24/192 support for all inputs, including USB.
• 6 digital inputs (2 coax, 2 Toslink, 1 USB, 1 AES/EBU).
• Analog Devices AD1955 multi-bit delta-sigma DAC delivers exceptional performance and superior audio quality.
• Analog Devices AD1896 asynchronous sample rate converter (ASRC) provides almost total immunity to jitter.
• ASRC bypass mode.
• Differential Reference™ balanced design with OPA 2134 precision op amps.
• Incorporates a seamless high-quality digital preamp with analog resistor ladder volume control with 0.25dB steps and flawless channel tracking down to -100dB attenuation.
• Connects directly to an Emotiva amp for a complete system.
• Includes an audiophile quality discrete headphone amplifier.
• Powers all standard headphones, a low 0.1 ohm output impedance, and a 105dB signal to noise ratio.
• Sounds great with sensitive headphones and in-ear monitors.
• Informative front panel display (with configurable brightness) for input and sample rate.
• Independent control and retention of main output level and headphone volume.
• Full function machined aluminum remote control included.
• Universal AC voltage—automatic 115VAC/230VAC operation.
• Sophisticated low noise power supply with a high quality toroidal transformer and multiple stages of linear regulation.
• Transferrable 5-year warranty, 30-day in-home trial.

Reference

Reviews:
innerfidelity.com (February, 2013)

Technologytell.com (April, 2013)

Manuals
XDA-2 User Manual (PDF)

Resources
XDA-2 Audio Test Results (ASRC Disabled)
XDA-2 Audio Test Results (ASRC Enabled)
XDA-2 Comparison of 44.1k J-Test results with ASRC Enabled and Disabled
Application Note: The Emotiva XDA-2, USB Audio, and USB Drivers
How to rename the XDA-2 USB device driver (PDF)

Drivers
New Unified Driver for ALL Windows Versions 12/12/2012 (.zip)
Emotiva XDA-2 Drivers Archive 11/27/2012 (.rar)

Driver Documentation
New Unified Driver for ALL Windows Versions PDF 12/12/2012
Emotiva XDA-2 Drivers Archive 11/27/2012 (PDF)
Emotiva XDA-2 Apple Drivers (PDF)

Photos

Specifications

• Main Outputs
• Output Level:
  1 VRMS (nominal, unbalanced with full scale digital signal); 2 VRMS (maximum, unbalanced)
  2 VRMS (nominal, balanced with full scale digital signal); 4 VRMS (maximum, balanced)
• Frequency Response:
  20 Hz – 20 kHz +/- 0.1 dB (44/16)
  20 Hz – 40 kHz +/- 0.1 dB, -3 dB @ 80 kHz (192/24)
• THD+N (all sample rates):< 0.0025%
• IMD:
  < 0.0025% (44/16)
  < 0.0005% (192/24)
• S/N Ratio:
  > 96 dB (44/16)
  > 113 dB (192/24)
• Crosstalk:
  < 100 dB (44/16)
  < 113 dB (192/24)

• Headphone Amplifier Output
• Output Power:
  1.9 VRMS max into 10 Ohms @
  < 0.02% THD (360 mW)
  2.25 VRMS max into 47 Ohms @
  < 0.015% THD (100 mW)
  2.25 VRMS max into 100 Ohms @
  < 0.01% THD (50 mW)
  2.25 VRMS max into 300 Ohms @
  < 0.01% THD (16 mW)
  2.25 VRMS max into 600 Ohms @
  < 0.01% THD (8 mW)
• Signal to Noise Ratio:
  > 105 dB (ref full output)

• Size:
  unboxed: 17” W x 2.25” H x 14” D
  (not counting feet and connectors)
• Weight: 10.5 lbs (unboxed)