The device is simply connected to the USB port of a computer and then provides a headphone jack, Line in, out, and a digital output. Microphone input, it has unfortunately not.
Some small weaknesses should be mentioned: the USB cable is firmly installed and can not be easily replaced, it is also relatively long so that it can come to the impenetrable cable-jumble. The design of the device with the functional impeccable but cheap aussehendem plastic case will not appeal to everyone. On the other hand one has here integrated a separate volume control for the headphone jack, which does not bring any device.
Overall, for the price very well-made, prima functioning and great sounding instrument. For headphones with low efficiency performance may be too weak for "normal" headphones you can safely access here but if useful and neat-made stereo ranging.
The device is very easy and thus go a good Companion apart from the slightly long cable. One point deduction for the cable. Device is highly recommended for recording from external sources. A phono equalizer is not integrated, so you would need for record players still an equalizer and phono stages.