The CDD-1 offers a unique selection of inputs and outputs. A pair of true balanced analogue outputs together with a pair of unbalanced RCA outputs. For your digital inputs, you can enjoy the freedom of choice between a USB (type B) and a coaxial SPDIF RCA connector. This digital connector option uses the supremely competent sample rate converter and digital-to-analogue converters to vastly improve the normally lesser sound quality of any streaming device or e.g. your computer-based music collection.