One of my KSC75 (also have KC35 and KSC50) measures like this:
They don't 'wow' me, certainly not when comparing them directly to better headphones.
I recommend to just use them and NOT do comparos with them (unless you compare them with crappy headphones).
With this I mean they sound excellent when listening to them and do not seem to have anything 'missing' or obviously flawed in the sound.
It is very easy to get 'tuned' into the music and thus they sound very convincing and real.
Of course it has some flaws (lacks extension to both ends but extends far enough to not be obvious), but strangely enough they only show their 'flaws' when comparing them to better headphones directly.
Funny thing is... if you put them on the next day you won't hear the flaws any more and they sound just fine again.
They are excellent for on the go, but useless on a bike (wind makes lots of noise) and a bit fiddly to put on until you get the hang of it.
You may have to bend the earclips to get an equal seal/sound or more comfort.
It's one of those headphones that I have always kept around and will buy again if they ever fail.
To me they are certainly worth € 30.- ($ 45.-) but paid less for them (fleabay)
I did a lot of measurements on its siblings (KSC35/PortaPro) and mods (coin mod, Kramer mod, thicker pads)
