Stereo Link.Com DAC , Digital to Analog Converter, Model 1200, Uses a USB Input, output is Dual RCA and also has a Headphone Amplifier with a Volume control,Sounds very smooth , Sound stage is Very musical, takes the hardness out of digital ,,,,,,these are hard to find on the used market,,,,Works with Mac or Windows,, Great way to stream audio to your stereo system…..Current models sell for $500.00- $650.00 + ,,,,,,,Connected between your computer and stereo system,,,,The Stereo Link converts data outside the computer and bypassing the computer sound card. Great Improvement in Sound!, the Model 1200 USB DAC (Digital to Analog Converter), a first of its kind product that lets you use all of the power and range of your home stereo to hear all of the music on your computer. Cleaner. Clearer. Louder, stereo-link DACs are used in homes with modest to high-end systems, in broadcasting applications, even by DJs,,,,.Enjoy the Music. Buyer pays $15.00 Shiping in the United States..