USB Digital Audio Converter miniaturized. It reproduces any digital music content, by the MP3 wire to high-resolution formats. Compatible with Windows and Apple platforms and devices with iOS and Android. TRANSFER asynchronous USB data Class 1 using the Stremlenght Protocol TM. A constant level output for connection to preamplifiers or sintoampli. The level of the 1.2V output SUFFICIENT to drive most headphones Present on the market. It uses the 32-bit DAC with 9010 ESS filtration Reduced Phase rotation. Analog volume control.