Superlux HD-681

I got introduced to this brand through a site which professionally reviews headphones. Headphones from 10$ up to the 1000's of $$$.
Intrigued by their positive review, especially their opinion of the sound quality / fidelity, I decided to purchase a whole set of them.
4 of this exact type, two more of other types of the same brand.
And I was really blown away : the HD-681's produce a sound quality that is unheard of at this price level. Or at 5 times the price.
I'm talking about neutral sound, something you can trust, not one that will give you the highest "kick" when listening to Dub or other genres, but something that translates very well anything you throw at it.
A bit like a cheap Sennheiser 600/650 - which of course plays in premiere league .
3 of them went to my kids, to learn to listen to music as it was recorded, instead of getting hyped sound out of "fancy" brands (where 50% of the budget goes to the "artist who developed the product line") ...

Negative : build quality - don't just throw them into your bag !!
Positive : replaceable ear cushions (two sets provided), replaceable cables (multiple lengths provided) --- did I mention "Sound Quality" ?

Pros:
-Affordable
-Decent quality, doesnt feel as cheap as the price would suggest
-Pretty flat sounding

Cons:
-High frequencies are not very defined
-Cable not removable


I got these headphones as a backup and to try out what open headphones have to offer as I've only used closedbacks before. I mainly used it for gaming and for silently practicing guitar and for those purposes these headphones are great. Sound is decent, its fairly flat, not too much bass and not very bright either, nicely balanced. The soundstage (stereo separation) is great, not perfect but definately usable for most situations, especially if you are on a budget. Comfort is not the greatest but I can wear it for an hour or two without discomfort so its not too bad. The padding is very stiff but the clamping force on your ears is not that strong so it cancels out. You dont need a good seal for open headphones afterall...

If you are on a limited budget I can highly recommend these headphones. They sound flat enough for basic mixing and the open design also helps a lot.
However... I can't recommend these headphones for outside or public use because of its open design.
Also if you are lookign for a very high quality professional monitor then I recommend you spend a bit more money...

I bought this headphone as a recommendation from rtings.com under the cheap option for critical listening and i was really surprised how this headphones sounded good. Of course there is better headphones out there but you have to pay for them. (I am student so i can't afford to but high priced headphones)
I am no expert in audio production and technicalities, but i like to hear some decent sound. I am pleased with the quality of the audio production.
I found the that sometimes the high notes or the treble may be sometimes be off in certain songs, but it can be ignored.
One thing i have to mention is the ear caps. The only thing that bothers is that you have to perfectly put them around your ear, because if they are slightly shifted, there will be a loss of audio, but this can be fixed quickly by adjusting the headphones on your ear. And if you wear glasses you may loose some of the audio through your ear.
Overall i recommend this headphone for people who doesn't want to pay a lot and get some good audio.
I hope you find this review helpful.