AKG K 272 HD High-Definition Headphones

Are this supposed to be Hifi? 
 
I got these from work when I asked for sound canceling phones. No these are not that, although pretty good on isolation. But what disappoints me most is that there simply isn't any low frequencies. Rock and heavy metal sounds just awfully blant. They lack detail too. Using them with a Porta Corda III USB.
 
Maybe I am spoiled with my HD800 phones at phone, but I would expect more. I just can't use them or my old HD650 in an open office space. Need to find some better closed phones it seems.
 
Pure crap, don't buy these!

I tested these headphones with few songs, on my ibasso dx50 and can say that these offer a disturbing sound & nothing close to High Fidelity,i personally use a pair a pair of Supelux HD-330 and they are much better than akg 272.
The sound for AKG is heard like coming from 10 meters long tubes attached to your ears on one side an on the other end a one way baffle speaker of good quality.

Awesome pair of headphones for rock and techno music!
 
I originally went down to a local audio store to audition a pair of grado 225is when these caught my eye. After almost an hour of going back and forth between the two pairs i finally decided to go with the akgs. If properly driven their clarity and definition is great, however the soundstage is fairly small since they are closed.
 
I'm not hugely versed in hifi audio equipment but i'll try and describe their characteristics as best as i can.
 
Highs: Fairly sparkly, some great detail on cymbal crashes and despite being closed they sound fairly airy on these depending on the song. Otherwise not too pronounced, definitely not a bright headphone.
 
Mids: Not very agressive, but still well presented, some good clarity in them although far less bite than a pair of grados.
 
Lows: While auditioning these at the store i found they had just the right amount of bass, but since ive gotten them home they seem to emphasize lower notes a lot more. although something i think these headphones really do well is that even though they can produce a fair bit of thump, i can still hear the bass player actually playing the notes which i really like.
 
Overall i think these are a great mid-fi pair of headphones, they are very easy to listen to and are quite clear. I'm really enjoying them so far and can't wait to spend some more time with them.
 
I apologize if this isnt a very detailed review, im not the best reviewer
 
EDIT:
 
turns out i had a loudness setting turned on that was causing increased bloated bass, mids and highs are so much more upfront now and bass is significantly reduced, now i see why it has a bass light reputation here.
 
Apparently my receiver likes to veil mids as well, plugged them into the headphone out on my computer just out of curiosity and the mids were back! The sound of these headphones keeps on changing for me as i discover flaws in my setup haha