Sorry for digging up this old thread. But I, as a complete newbie to the serious audio world, would like some advices to deal with the ever increasing annoyance of my newly bought HI2050 (I got it at only 32 USD by the way since I'm from Vietnam, right next to China). It's my first full size can ever, and I like everything about it, except for its tendency to go sibilant whenever a male vocal is present. I've tried eqed it with the Realtek Audio Manager (decrease frequency around the 2k-4k-8k range) but to no avail. Is there any other method that I could do, some magical break in tracks that will help me get rid of, or just simply loosen that harsh sounding a bit? Thank you all!