I agree with you. The sound is excellent. A brilliant feature is "high gain." At home was my rig: Pc Foobar/KS output/Asus Xonar STX (also have feature "High Gain")/Sennheiser HD 650.
Now is my rig X3/Sennheiser Hd 650. Sounds much better. I dont know for what reason.
Sorry, this post was reaction to post from "DoctorJazz."
"Just got mine today, initial impression, sounds GREAT! Listening for a little through my Senn HD650, don't think I've quite heard them until now (and I have used a HiSound Studio, which sounded good, but not as, by memory, and iPod Touch/LOD/Continental Amp. Will have to listen head to head (the geeky thing to do), but my initial reaction to the X3 is LOVE!. Question, probably stupid, the little instruction sheet in the box says to "scratch off the coating to get the 20-bit security code", then to log in to Fiio and use the code to check if genuine, register for warranty, I don't see where on the unit you "scratch", anybody able to help?"
Edited by marty63 - 9/8/13 at 5:29am