I use it only as a headphone amplifier. The 4 different headphones - three dynamic and one planar - perform excellently. After hours of listening, it does not heat up much. I noticed a big difference when I used the audiophonics lpsu25 power supply instead of the mains supply. As if I were listening to two different audalitic! The minuses - expected at this price - are the lack of presets, e.g. for gain and the absence of equalizer, crossfeed. With power from a linear power supply, the amplifier performs excellently.













