Purchased for a second system that is now not going to materialize. Rating is ultra-conservative; unit is indistinguishable from new. Below from Emotiva's website. Asking price includes UPS Ground shipping and insurance to any street address in the Lower 48. Thanks for looking.
The XDA-1 Differential Reference™ balanced 24Bit/192kHz DAC/Digital Preamp represents a stunning achievement in sonic performance. Designed around the acclaimed Analog Devices AD1955 DAC operating in a fully differential mode, its differential output is then coupled to a digitally controlled volume control stage. The output of this stage then drives our fully discrete, cross coupled, Differential Reference™ balanced line amp stage. The result is breathtaking.
In addition to being a state of the art 24Bit/192kHz DAC, the XDA-1 can operate as a digital preamplifier and source selector in a digitally based reference level audio system. Inputs for up to six digital sources including AES/EBU, USB, Coax, and Toslink are available. The XDA-1 incorporates a VFD display for volume, input select, and system status messages. In addition, it is supplied with a milled aluminum remote control for convenient operation.
The XDA-1: transcendent.
Signal-to-Noise Ratio: > 105dB (A-Weighted)
Frequency Response: 5Hz - 48kHz
Ground Floor Noise Level: 12VRMS (balanced)
Sample Rate: All standard resolutions are supported up to 192kHz
Bit Depth: Standard bit depths up to 24Bit are supported at clock frequencies up to 192kHz
USB hardware support up to 48kHz / 24Bit
Inputs: 2 Optical TOSLINK, 2 COAX Digital, 1 AES/EBU, 1 USB
Outputs: 2 RCA (Unbalanced), 2 XLR (Balanced)
Internal Volume Control: Digitally controlled in increments of 0.5 steps
Remote Control: Milled Aluminum Full Function Remote Control
I/V conversion: Burr Brown OPA-2134
D/A conversion: high performance, multibit Sigma-Delta AD1955 Data Directed Scrambling
with high jitter immunity, and an 8x Oversampling Digital Filter
Fully Discrete Differential Reference™ Output Stage with fully independent balanced and unbalanced drive stages
17" wide x 2.25" high (1.75" without feet) x 14" deep