Pros: light weight, good clarity and high bass
Cons: stiff and sweaty ear pads, wire length option and portability
When the package reached, my first impression is... honestly cheap. Simply a plastic wrapped with a hard cupboard holding the HD681 which i understand because of considering the budget. The headphone comes along with a 6.3 mm plug adapter and carrying bag. Then I hold the headphone, surprisingly light weight and it fits my head quite well (my head is quite small). Unfortunately I realise the ear pads are quite hard and if used a long time it will become sweaty (tropical country :D).
For musics, so far all genre is good to go, and with amp and tuning equalizer the result will be more impressive. I'm just a normal home user who enjoy music but not in professional way so it is consider extra good for me except the wire is a bit too long for me (which i dont need too long). So i coil it and I think it is not a very big deal with it. In terms of portability, HD681 is not very suitable for mobility use as it looks too much adopted in studio monitor (the design is cool wearing in indoor) and big size.
Overall, considering the price and output quality, it is still the best bang for bucks (in my country ;P) like other Superlux headphones and earbuds.
Recommend for users love enjoy any genre musics indoor with simple way (not DJ style) and replace its ear pads (velour pads or others).