has introduced the Explorer
, a new portable USB Digital to Analog Converter (DAC). The Explorer can connect to any Mac, Windows, or Linux computer and will act as the system's sound card. All audio signals routed through the device are passed through the built-in DAC, which should provide higher-fidelity audio, depending on the initial resolution of the audio source. In addition to a 3.5mm headphone port, the Explorer also includes an audio in port for sending external audio sources into a computer. It retails for $300.