USB Stick-Sized Digital-To-Analog Converter/ Medium-Output (1.2 Volt)/ Drives Headphones Directly/ Plays All Music Files From MP3 To High-Resolution/ Variable Output Drives Powered Speakers Or Power Amp/ Fixed Output Feeds Preamp Or Receiver/ Asynchronous Transfer Ensures Digital Timing Integrity/ 64-Position (Digitally Controlled) Analog Volume Control/ Direct-Coupled Digital-To-Analog Circuitry/ Minimum-Phase Digital Filter/ Black Finish