Superlux HD-668 B

Bought a pair along with some AKG K-240 velour pads because i heard some good reviews but the stock pads were supposedly bad.

Stock pads were like most fake leather pads youd get, they do the job but a pad swap is so worth it just for the comfort level alone.

Build wise is mostly plastic, expected at this price point. Theyre also bulky and big so theyre better for home use.

Sound is kinda 'fun', not accurate but good for listening to music or gaming for example. I wouldnt use them for music production.
Being semi open there is sound bleed so take that into consideration when you need to be quiet.

Price is very hard to beat and even if you do get other pads theyre still cheaper than some budget headphones. Different length cables is a nice bonus too. If you do manage to break them then it wont cost much to replace them.

Overall: Cheap set of headphones which sound great for the price, with a pad swap they get even better. Best used when at home relaxing listening to music or the likes of gaming. If you have no other headphones or just want to recommend to a friend then these are worth a look.

When I saw online that this 30€ headphones would sound balanced, true to the sound and could compete with "all stars" headphones I was like: "some people are consuming too much caffeine. After a few years I decided to give it a try and the moment I've put them on my ears I was like: "Is this really happening or am I hallucinating?
Well this headphones were tested through a Focusrite Solo and from my Laptop's audio card. The sound was great on both of them, being the Focusrite sound slightly better. The bass was a little off in the beginning but after 30 hours of burn-in, the bass was punchy and accurate, the highs also became much more realistic and now they are not so annoying and keep getting better everyday. While I'm producing I can get the subtle differences in the mixing, some things that I can't get with more expensive headphones. This is not a headphone for big heads, my brother and father complain about the tightness, for me it is a perfect fit.
So if you think that cheap stuff is not good enough, think again. While this is not perfect, nor a war tank, it can last a long time if taken care of.
I would say that the sound is the best I've heard and I will change the ear-pads for some AKG ones to be comfortable.

I bought these headphones couple of years ago after hearing many good reviews about them and when I was told they are extremely good for the price you pay. But I was amazed at how good these really are. The sound quality is excellent, the pads don't weigh on your head so you can use them for hours to the end, bass is not too heavy but you can really feel it. The cord is removable and usually comes off when I try to leave my computer with these on my head so that's another plus for me. If you're looking for extremely good headphones for a really cheap price, I don't think there are any that compare to Superlux HD-668 B. I love the synergy the Superlux show on a crossfeed. It "warms" up the sound just to the right amount, giving a slight boost in the bass and further refining the headphones convincing soundstage. I prefer that combo to most much more expensive headphones I know. I think the HD668B are killers for their price and Superlux is a great company which makes affordable products with great sound quality. Now enthusiasts and professionals who couldn't afford to buy 5 pairs of AKG's for their studio can do that with Superlux without compromising the sound. If I wanted better audio quality I should prepare to spend 10x the money these cost!

Having lived with these headphones for some months now, using them both for recreational listening, and for some more detailed mixing work I feel able to give some considered feedback.

Firstly, lets get any possible negatives out of the way. Buyers need to know that these are open back, and with that comes a great deal of spill, both in and out of the headphones. Sitting on the bus and using them to listen to music is very much not recommended ... but that's not what these are for.

Secondly, the build quality - whilst they've held up perfectly well over the time I've had them, they do feel somewhat flimsy. I'm careful with my equipment, and I think any user who uses a throw them-into-the-bottom-of-a-bag policy will end up regretting it.

Lastly amongst possible negatives are the slightly odd lengths of lead that come with it. One is rather short, and the other rather long. I've taken to using the long one as an 'extender' as needed, but usually use the shorter one. This works for me, but could be an issue depending on sitting position, placement of headphone amp/port etc.

The positives are obvious though: A detailed, clean, transparent sound, with none of the inflated bass found with closed headphones. This might take some getting used to (for those accustomed to earbuds, or closed back headphones).

They are very 'light', meaning physically they are easy to wear for long periods without neck fatigue.

Despite my initial fears about their durability/strength, they still happily 'clamp' my head, and are nicely adjustable (including the pads at the top). Some users appear to 'mod' these headphones with sponge and gaffa tape to make a 'band' at the top, but I've not found that necessary or desirable.

The price is excellent. Even if just being used for occasional mix-checking, at this price they deserve a place in the studio!

For recreational listening (which I'd recommend, in order to get used to their sound), they have proved excellent. I've enjoyed many styles of music, and continue to be impressed by their detail and lack of colour.

Overall - thoroughly recommended for the price, as long as you know what you are buying.

This is my second pair of cans. First one broke after years of abuse, dropping it a hundred times during gaming. I’ve owned AKG’s, Sennheiser, Audeze cans but these are my go to when I need near indestructable headphones for everyday gaming use.

Superlux is a solid company that provides many other companies with their products where a label gets slapped on. On this particular model the high end may be a bit harsh but after a break in period that smooths out eventually.

I have a medium to big sized head so the headband crushes my skull when I use it for more than an hour. Replace the sweaty p leather cushions with felt cushions and your golden. I recommend these headphones if you are willing to sacrifice comfort over audio quality and sheer durability. The sound quality is stellar and well rounded. Bass heads should look elsewhere.