This is my first experience of a headphone that can produce an amazing detail sound that can really feel natural and immersive at the same time. The first time when I put on the HD 598, I didn't expect this headphone can perform this well when looking at it price tag. Later on, I also try some other very high end grade headphone which including the Audeze LCD 2 which cost about $1000(+ some very high end DAC/AMP from Kern) , of course with this high price tag, the Audeze perform just like what I expected from it price, instruments sounded like it is playing lively just for you. The thing that Iam trying to say, is that the HD 598 do really benefit the technology from it older brother (HD 800) the angled drivers do really improve the sound stage dramatically, and when the HD 598 being compare to the mighty Audeze LCD 2, for me, the HD 598 do really shine very well on the highs and mids when even compare to a $1000 headphone which seem ridiculous, but even though the Audeze LCD 2 really much outperform the HD 598 in term of bass quality and quantity, the bass sounded extremely realistic/accurate, it feels tight and have wonderful impacts.
 
Conclusion:
With a price tag of $200 headphone range, the HD 598 for me really perform much better than it competitors e.t. ATH M50X...etc. For it overall sound quality and purpose( except it is not really goods when listen in the public which sound leak in and out quite alots). I would say, it is a hard to beat headphone at this price. 10/10