Pro-Ject Phono Box USB V. Total Harmonic Distortion (THD): 0.005 %, Audio D/A Converter (DAC): 16-bit, Signal-to-Noise Ratio (SNR): 94 dB. Connectivity technology: Wired. Weight: 580 g. Power requirements: 16V, 200mA, Dimensions (WxDxH): 103 x 36 x 103 mm, Compatible operating systems: Windows XP, Vista, 7 Mac OS