The UD-10.1 upgrades your PC to be a hi-end audio source. Thanks to the excellent power supply handling, the high accuracy clock and the sophisticated digital output circuit, UD-10.1 makes your PC behave like a high-end CD transport to work with an external DAC. The UD-10.1 and PC combination provides better sound quality, larger storage capacity and a more user-friendly interface than a standart CD transport. The computer hard disk is far superior to CD transport - no matter the speed, stability, error correction or jitter reduction.

Information from Trends Audio: On the front panel, there is a USB input & headphone output. The headphone output can be converted to a pair of RCA audio output s with the bundled adaptor. The back panel is mainly the digital outputs (optical x1, coaxial x2 (RCA & BNC), AES/EBU x1) and the external power supply socket. - High-end Burr Brown PCM2704 IC for USB audio conversion - Proprietary dual power regulation circuits design (normal implementations are just directly apply the 5V USB bus power). No matter what power is supplied to the USB bus or the external socket, it’s regulated before supplied to the related ICs. Dual regulated power is supplied to digital circuits and analog circuits individually. - Separated digital/analog grounds. The digital GND (network) and the analog GND (solid) is totally separated except connected via a ferrite bread in a single point. It effectively reduces interference between digital signals and analog signals. - The option to use USB bus power or external power [better sound] (e.g. AA size rechargeable battery 1.2V x4=5V. Don't use normal batteries with 1.2V x4=6V, it would be too high for safe use and would degrade sound performance) - 4 pin high accuracy crystal clock (¡Ó10ppm) - Applied RS422 driving IC to concurrently drive 4 groups of balanced & non-balanced digital outputs. Audiophiles can compare the differences between these digital outputs instantly or play for the Bi-DACs or even Quad DACs. - Proprietary impedance matching circuits for AES/EBU(110ohm), Coaxial(75ohm) digital outputs. - We applied the specially designed pulse transformers for each AES/EBU and coaxial outputs to further isolate interference from the UD-10 to the external DAC. The most pure, accurate & standard digital signal is then regenerated with minimum interference and jitter.

- Plug-and-play without driver installation for most PC operating systems, e.g. Windows 2000, Windows XP, etc Trends applied audiophile grade materials and electronic components, including high-quality Japanese/Korean precise SMD resistors and capacitors. Besides reducing the space, it also reduces the resident inductance (relative to DIP components). The power filtering and decoupling is using Sanyo’s OS-CON solid-state electrolyte capacitors. The analog signal decoupling and coupling are using ELNA Silmic electrolyte capacitors and WIMA MKP10 film capacitors. The case of the device is the stylish iron-gray whole aluminum one.