http://teac.jp/product/ud-501/ (Sorry, only in Japanese)
Dual PCM1795 and use four Muses 8920 OPamps@output circuit.
Dual mono design and dual toroidal power transformers.
Digi inputs: 24/96 via Optical, 24/192 via Coaxial, 32/384 and DSD 2.8/5.6M via USB (Not sure which USB receiver was used)
Can switch XLR Hot between No.2 or 3pin, can switch USB power from it's own or computer.
Multi decoding filter mode can select.
Full metal body
Volume looks just for HP out, not for pre-out.
Price is 115,500円/USD$1,460@Japan