- - Good pumping sennheiser hd 600 (sensitivity 97 dB, impedance 300 ohms) - Size and weight allow you to take and put it anywhere -Works via usb without additional power, but in this scenario it does not pull tight headphones. - There is a linear and optical output. That is, this amplifier is not limited to headphones only and you can connect speakers. -Switch between speakers and headphones in one click. Very comfortably. - Looks cool (in white), easy to disemble.
- For 4 years of use, I did not reveal any shortcomings as such. Well, except that it heats up, being connected to an additional power supply. And when you connect sensitive plugs, interference is heard.