This usb dac sound card is built around the integrated circuit reference PCM2704, a young prodigy electronic synthesizes the expertise of TEXAS INSTRUMENTS and its subsidiary illustrates BURR-BROWN.
Miracle of integration, the PCM2704 is itself the roles of controller USB 1.1 high speed (12mb / s), Audio Converter and Digital / Analog, all in a surprisingly small space.

From its architecture and its simplicity, it requires no software or drivers to interface with a computer station: just plug into a USB port, and it will be automatically detected and installed by the vast majority of systems Operating current (Windows XP/Vista/7 - MAC OS 9 / X - Linux).

Processing capabilities of the PCM2704 allows him to process signals at a set sampling frequency between 32 and 48kHz 16-bit maximum.
The binary signals injected within it will also be systematically re-clocked on a reference clock signal of 12MHz generated locally before passing through a digital filter with oversampling multiple (x8).
This construction, exclusive to TI and baptized SPACT, to the advantage of minimizing the negative influence of the USB link and its asynchronous nature of the numbers of jitter.

On this model the jack socket has two types of outputs:

Output Analog stereo line-level connector on the 3.5mm
A SPDIF Optical Toslink Mini format

Features:
Enter USB 1.1 "Full Speed" (12mb / s)
TEXAS INSTRUMENTS SPACT technology (Internal Clock / Phase Lock Loop)
Analog Stereo outputs on 3.5mm connector
SPDIF output on connector 3.5mm (Mini-Toslink)
Supply by USB
Power Indicator Light

Specifications:
USB Connection Type: Adaptive
Sampling frequencies: 32, 44.1, 48KHz
Quantization: 16 Bit
Dynamic Range: 98 dB
S / N Ratio: 98dB THD + N (0.006%)
Natively Compatible with Operating Systems: Windows XP/Vista/7 - MAC OS 9 / X - Linux
Dimensions: 65 x 30 x 10mm (LxWxH)
Delivered without USB cable Nude