Most newer audio equipment (such as TVs, cable boxes, CD players and gaming consoles) only outputs audio signals through digital optical or digital coaxial connections. That limitation can prevent you from outputting sound to your stereo equipment which may only accept analog signals. Our DAC s the ideal solution to convert digital audio signals to analog audio. Once in analog format, the signal can then be distributed up to 150 feet away, surpassing the length limitations of digital audio. This not only provides added flexibility for equipment placement, but also saves money by eliminating the need to purchase digital repeaters. This plug-and-play solution requires no additional software or drivers and supports Windows 7. Up to three different devices can be connected at the same time using S/PDIF coaxial, TOSLINK optical, or USB input. This not only accommodates a variety of equipment types but also allows for multiple configurations based on the user's custom setup.