Superlux HD-669

Bought them for only monitoring live recording levels at church.
First thing i did was to compare them to my ATH-M50x. Here are my thoughts:

Build quality:
Nothing no praise unfortunately. Manufacturing marks, cheap looking thin cables, cheap-feel plastic, ugly carrying pouch and "leather" headband pads.

Comfort:
These are huge! Pads feel stiff and earcups can only move few degrees to adapt over your ears. But this can be a good thing when you happen to have slightly bigger ears.

About the sound:
I found them very bass heavy, but bass is quite tight and defined. But for my taste, too much bass.
Low-midrange is quite "missing" and what's left is muddy.
Upper-midrange is good! Vocals sound very clean, nice and present through these!
There is a very audible presence boost say, about 5-8kHz range. It gets a little annoying and tiring when listened on high volume for some time.
Unfortunately above these frequencies there is mud again. Highest frequency details, often referred as "air" or "shine", are poorly defined and sound dull.
They are not very sound proof either. Outside bleeds in and otherwise. Wouldn't recommend for tracking.
One more thing, compared to ATH-m50x, they sound "distant". While ATH feels really close, in your face, HD-669 creates "distance" between the the ears and the sound. Can't say if it a good or a bad thing.

Power hungry!
They do need a lots of power to drive them. When plugged straight to smartphone, you cant get anywhere near loud without distortion. But my MacBook Pro preamp did just fine.

FOR THE PRICE I would say amazing sound! Useable for a lots of things, but for serious mixing or everyday music listening, please consider something else. In blind test I would have guessed them in 50-60 euro price range by the sound.

I really like these phones, but the reason why I bought these was not the reason why I will keep these.

The headphones have a really clear sound, and according to my friend who also uses these. The phones have a straight EQ curve. (with my own EQ settings) The bass is huge. The mids are okay, The treble is okay, but a bit too much for me.

The phones are big, over the ears, huge. They look a bit weird when they are on you, but if you don't care how you look, that really doesn't matter.

These will not break on you, like seriously these are built to last. You don't have to worry about breaking these when you take them off of your head, unlike with some other headphones.

I bought these headphones, so I could have massive amount of quality while on the buss for example. These do deliver in the sound department, but not in the portability. They are a bit heavy and a bit un-comfy. You need to let these morph to your head until they become comfy.

They are really big, so be aware of that! And whilst these are on your head they are borderline UGLY!

I still do recommend these, because if you want big headphones that have good quality for dirt cheap. These are just meant for that.

I bought this headphones for my recording studio few weeks ago and already used it in several recordings. Although they cannot be really used as the reference headphones they work very well as the recording monitors for musicians. I had number of musicians using it for couple hours and none of them ever complained about the comfort, signal level, noise cancelling or sound quality. Mixing on this headphones may be a bit difficult as they (in my opinion) have a bit too much lows (as it often is in budget closed headphones) and lack of clarity in mids, however please be aware that I'm comparing it to the DT-880 Pro and K240MkII that cost 10 times more. The difference between hi-end and HD-669 can be clearly heard but on the other hand they not that far from them in sound and build quality as they are in price which is very good thing. I have to say that so far this are the best budget close cups headphones I've ever had in my 20 years career. I would recommend it to anyone that need good monitoring headphones. They can't be beaten by anything else at this price tag.

About 3.5 years ago I was looking for some new headphones that shouldn't be too expensive since at the time I was still a student.
I got a lot of recommendation for Superlux headphones for their amazing sound especially for their price.

So I ordered these.

I really liked them but the earcups where really stiff and uncomfortable.
So I bought some replacement memory foam + cooling gel earcups on amazon and after that they were the best "gaming headphones" I ever had for those years.

I am also just now coming back and write this review because I wanted to see how long they lasted since I ordered them and after near daily use on my PC (with a number of rough encounters of me forgetting to remove them before standing up) they "finally" started to show and make it audible that there is significant wear and tear at the connection piece for the adapter of the the removable cable.

So if your hope for the removable cable was that you will avoid cable wear and tear then I sadly need to disappoint you since for that the headphones would need a female aux connection and not a male one that dangles on a irreplaceable very small cable. BUT if you want that for better cable management it is still very useful!

All in all I liked them a lot and do recommend them especially for gamers on a budget IF they want closed over ear headphones and are willing to replace the earcups for more comfort!