Im owning this pair of headphones(k450) and frankly, im a bit disappointed with its performance... ive roughly burnt it in using white noice for 50hrs but the sound is still kinda muffled up.
The bass are really overwhelming and wasnt deep enough;
The mids are a bit recessed and a bit covered by the bass, but quite good at this price point(Warm-sounding in my opinion);
The highs are where I found it disappointing. Its nearly not noticeable like the high hat as mentioned by the others and the cymbals sound thin and paper-like and lacks extension.
The soundstage was not good (like putting a band in a small room).
Meaning that the sound coming out of this are not recommended for a neutral pair of headphones. However, looking at the price point, it is just doing its job right.
The k450 is ultra portable and so durable with a removable cable,just paying for the built, its a no-brainer.
However, for the sound, I would recommend people to buy in-ear headphones with this price point like the ue600/700,shure 215(bass-heads), westone w1 and um1 etc.