It is a 5-in-1 unit: can be used as 1) external USB DAC for laptop, 2) headphone amp, 3) tube processor for analog signal, 4) digital decoder for optical and coaxial signal.
You can use it directly with your digital source such as laptop and music server and play music back through your existing amplifier or powered speakers. Or you can simply get a pair of high quality headphones and enjoy the music in private!
Breath new life into your older CD or DVD players either by connecting them to the digital or analog inputs. Turn your Blue Ray Player into a higher-end music/audio player.
Computer game music will also become less fatiguing with the tube processing of the TubeDAC-09.