Easily worth the money. Amazing power from such a small thing, and you just need to connect to use it, no driver needed. Recommended.
Edit: It began to lose power gradually, which became very annoying.
Very good sound for the money, it feels solid and well built but my also have similar problems as others here have pointed out, that language only solved by pulling the USB cable.
Bought a pair of Sennheiser HD 558 and read that they would be even better if you acquired a headphone amplifier. How did this little bugger for a good price, I thought.
But I can not say that it was worth 800kr. Direct each sound a little clearer certain, but do I not 800kr. Got download an EQ (boring that no one included) and started fiddling with it, picked up the bass a little but not as I had hoped. Should try to fiddle a bit more, but is expected to return Udac: one and save the money for something a little more fun.
EDIT about 5 hours later: I have now tinkered out a superb EQ, and the base, which push the sheep! But I think unfortunately the sound already loose, may be that I drive an adapter from 6.3mm to 3.5mm. Very unsure of what to do, but the grade stays enough left and probably be to send it back.
EDIT 2: After having had them for over a week, I have both solved my problem with backlash sound and audio quality. The flapping sound was that I sat USB jack into a 2.0 port, switched to a 3.0 and it has never occurred since then! Fiddled with the sound settings with EQ Equalizer called APO, which made excellent job! The base has been lifted to the moon, the head vibrates in bass songs!
Increases rating from a 4 to a 8!
Satan thus powerhouse! For 890kr at Complete the sale, it was a bargain. My Fidelio X2 headphones is like re-born. Strongly recommend!