THIS LISTING IS FOR AN AYRE QB-9, DSD, USB DIGITAL TO ANALOG CONVERTER.PREOWNED BUT WORKS AS IT SHOULD.SOUNDS GREAT WHEN CONNECTED TO USB PORT OF COMPUTER.INCLUDES POWER CORD.COSMETICALLY IN GOOD CONDITION BUT UNFORTUNATELY THE AYRE STICKER IS GONE EXCEPT FOR THE Y. TRIANGLE INSIGNIA COMING LOOSE.INCLUDES STANDARD OWNERS MANUAL. AYRE WEBSITE (COMPUTER AUDIO OVERVIEW) IS INCLUDED AND IS A VERY INFORMATIVE AND EXTENSIVE DOCUMENT. STEREOPHILE.COM AND OTHER HIGHEND PUBLICATION REVIEWS ALSO INCLUDED. HANDWRITTEN NOTES FROM PREVIOUS OWNER MAY INDICATE A POSSIBLE UPGRADE WAS DONE WITH SSD AND 8 GB BUT CANNOT BE CONFIRMED.SEE PICTURES.SHIPPED DOUBLE BOXED (IN ORIGINAL BOX AND PACKING AND IN OUTER BOX)

1 unit used by us works great include original box as pictured For your consideration. An Ayre Acoustics QB-9 USB DAC. Dircet used purchase. In VG, if not EX cosmetic condition. For a detailed look of the unit up close Item will ship insured with signature required. Thanks for looking! Ayre Acoustics QB-9 USB DAC Description Asynchronous transfer mode, USB-input, oversampling (16x) digital-to-analog converter with minimum-phase digital filter. Input: USB 1.1–compliant. Sample rates supported: 44.1, 48, 88.2, 96kHz. Word lengths supported: up to 24 bits. Maximum output levels: 2.05V RMS (unbalanced outputs), 4.10V RMS (balanced outputs). Frequency ranges: DC–20kHz (at 44.1kHz), DC–22kHz (at 48kHz), DC–40kHz (at 88.2kHz), DC–44kHz (at 96kHz). Signal/noise: 110dB (unweighted, no reference level given). Specifications Dimensions: 8.5 (216mm) W by 3 (76mm) H by 11.5 (290mm) D. Weight: 5 lbs (2.25kg). Finish: Black or clear anodized aluminum.