This is the Music Streamer II, a USB DAC (Digital-to-Analog Converter) from High Resolution Technologies (HRT). It was found at my parents' house. There is some writing on it. Operation has not been confirmed. Two cables are included. It is mainly used to convert digital audio sources, such as from a computer, into high-quality analog audio and output it to an audio system. Please refrain from purchasing if you are sensitive to used items. #USBDAC #DigitalAnalogConverter #MusicStreamerII #Audio #Amplifier