OPPO Sonica DAC

Original Owner.  Just over one year old.  Mint.   Less than 100 hours.  Used in office system that gets very little use.   From OPPO:

Oppo Sonica at Home as High-Res DAC/Streamer in Computer-Audio or Traditional Systems: Features 32-Bit/768kHz PCM and DSD512, Wireless Playback, SABRE PRO DAC, App Control

The Oppo Sonica DAC/streamer gives music listeners the best of two worlds – specifically, ability to be used in either computer audio or traditional stereo setups – and stunning audiophile performance for a previously unheard cost. On one hand, Sonica is a high-resolution DAC equally at home in a home or dedicated computer system. Paired with a computer, its asynchronous operation handles up to 32-bit/768kHz PCM and up to DSD512. Feed it high-res audio files from a computer via USB connection or by way of USB storage devices, and you're off to the races. The elite build quality, premium internal components, and clean, clear powerful sound make it the kind of DAC that could easily justify a four-figure-plus price tag. But Sonica goes to lengths most standalone DACs can't fathom. 

Affording you 21st century flexibility, Sonica can greatly expand the versatility of an existing home system. In addition to being able to serve as a conventional DAC with coax, optical, and analog inputs and a suite of XLR and RCA outputs, it doubles as a high-res network streamer able to play content from DLNA servers as well as Bluetooth and Apple AirPlay devices. Wirelessly stream up to 24-bit/192kHz FLAC, WAV, and Apple Lossless files. Enjoy DSD64 from DLNA and USB sources. Listen to music from iTunes, iOS devices, and OS X computers on your network. Your mobile devices conveniently quarterback it all – including services such as Spotify and TIDAL – with help from Sonica's dedicated app.

Sonica arrives ready to master anything you throw at it. Fully balanced throughout – from the cutting-edge ESS ES9038PRO SABRE HyperStream DAC chip with 140db of dynamic range all the way through to the XLR outputs – Sonica boasts exceptional common-mode noise rejection, signal quality, and channel separation. Its massive toroidal transformer furthers the spoils by offering incredible efficiency and turning magnetic-field interference into a thing of the past. An aluminum chassis, brushed-metal front panel, and 2.8-inch OLED display give it classic, stylish looks.