I'm the original owner and this Dac is less than a year old. Mint condition, works flawlessly and USB is wonderful (my source is a Macbook Pro and Amarra). Purchased from Valab through Ebay. Also for sale on Audiogon, where I have tons of positive feedback buying and selling for over a decade. The original Ebay price was $261.00.
Here are the specs:
1: USB, coaxial, optical fiber digital input mode, 2 rca decoding output.
2: can be used as a USB sound card, small size, convenient PC - HIFI users.
3: decoding using classic philips TDA1543 chip, 8 parallel design, exquisite moist.
4: digital receiving chip USES WM8805 (analog and digital voltage regulator).
5: adopt TE7022 USB receiver chip, support 24 Bit, 96 KHz, without going through format conversion directly receive a variety of digital audio signal flow.
6: USB with high precision of 12.000 Mhz 1 PPM TCXO (removing crystals) as the master clock TE7022; Reclock circuit adopts Toshiba TC74VHC74 high-speed chips.
7: support 24 Bit, 96 KHz.
8: compatible with win2000, XP, vista and Windows 7 system.
9: main filter capacitor adopts panasonic audio dedicated FM series,
10: decoupling using chemical high-speed solid capacitance.
11: ac input with EMI filter circuit.
12: built-in heat sink, aluminum shell, panel.
13: gold plated rca, coaxial terminal 2, low resistance, guarantee the stability of signal transmission.