USB in, HDMI out.
You can play popular DVD and CD disc formats as well as DivX, MP3, WMA and JPEG files from disc. You can even extract music files from disc to USB (MP3, DivX, JPEG, WMA) - no need to use your PC anymore.
When listening to compressed audio, the Sound Retriever 'upscales' the quality to closely match the original source. And with various listening modes to choose from, you can adjust the sound for your preferred musical genre.