I have used these for 3 months now, and I use them for playing/recording guitar on my pc using a focusrite Scarlett solo soundcard.
For comparison I have previously used "the t.bone HD 990D", which I can't wear for more than 1hr at a time, so the K-92 was a nice upgrade comfort-wise.
The K-92 is lacking some midtone and has too much high frequency, but I guess that's a personal preference.
The K-92 is light weight and the ear paddings are sufficiently large to encompass/cover my ears.
However they seem to be a bit too "plastic" and the cable is already starting to show some issues e.g. right side sound missing!