Hi all   I'm currently using the Pico amp/dac as DAC to feed my Gilmore lite.   I listen with my HD650 basically all the time.   But every time I listen to music, I feel my ears (not earlobes, but ear internal/ear drums) are sore after awhile, not even an hour even.    Why is...

Guys, I know there are lots of threads on the pico, but I couldn't find the answer to my question.   I'm waiting for my pico to arrive from a head-fier. He doesn't have the user manual anymore, so I'm trying to find an answer from you guys.    Obviously, if I use it as a portable amp, I...