Who am I - Just another casual filthy plebian listener.
Previous gear - those free nokia earphones (yeah i was poor af)
Current DAC - Fiio Q1 (yeah i bought the cheapest one about a year ago)

What i've listened to on 990s for the past week:
Movie - watched Guardians of Galaxy 2. Enjoyed it.
Games - played DotA2 and lost 1k MMR. Played DOOM and sh!t my pants. The soundstage was good. Could easily pin-point dem demons. Ahh the explosions were damn good.
Music - I listened to Behemoth, Black Sabbath, Priest you know which genre(s) i'm talkin about. I definitely enjoyed it. However, my flatmates listened to EDM and they didnt enjoy it possibly due to dem higher frequencies piercing the ears. Good for me...they wont touch my precious.
Porn - Yeah i listened to porn. Deal with it. U see how dem ppl say they could hear sounds they've never heard before...yeah i'm definitely not watching porn ever again after what i just heard XD.

Comfort level -
1) Ahh heaven on my ears.
2) Long marathon gaming sessions didnt heat up my ears. Open-back FTW!!! BTW i dont have AC in my room. Ambient temps around 30C. I do have a fan though.

Sound leak - Plebian flatmates think i'm listening on high volume and say i'll go deaf. Little do they know that open-back cans do leak sound...even on moderate sound levels.

What i've listened on:
DAC - I had to run my Fiio Q1 at 70% volume on high gain to get my preferred level of sound/sufficient power to my cans.
Motherboard - Gigabyte GA-AB350-Gaming-3 has an AMP-UP feature but that causes a hiss when set to max-gain. External DAC ftw!!!
Phone(s) -
1) Redmi Note 3 (running AOSPex not the stock OS) - felt good, clarity of music was there but the bass was not powerful enough when compared to DAC.
2) iPhone 6 - meh

P.S. i am new to mumbai (unknown neighbors) so i asked HZ team if i could deliver to their offices. They just agreed to it. Though later i just ordered to my home XD. Either way thank you HeadPhoneZone team for ...

No complains about the quality of the product, I'm just unhappy with my experience. I'm a musician and I've been using them almost everyday since the time of purchase. Suddenly the right side of my headphones stopped working completely, and now I can only hear through the left side. No physical damage has been caused to product, there's some internal issue. I invested in this expensive product just to avoid these kind of issues. I'm really disappointed that they stopped working within the 5 months of purchase. They give you a 2 year warranty and you have to contact beyerdynamic directly to claim it. Both headphone zone and beyerdynamic do not provide you with a pickup in such cases, which is again very disappointing. I'm a resident of Mumbai and now I will have to courier these headphones to banglore myself. Extremely disappointed!

Yes, they are 'that' good. Amazing comfort, good build quality, wide sound-stage, very flat frequency response(what I was looking for).

ABOUT THE SOUND QUALITY : Let me tell you this, the frequency range is very wide and of very high quality. You can hear from the deepest of the sub basses to the highest of the percussion from a track. It feels very natural and bright. The bass is tight and doesn't distort at all even at high volumes(Shows the amazing quality of the drivers used). Don't expect head thumping bass as it was made for studio applications but I can tell you that they are amazing for multimedia use too. Overall, a very balanced and rich audio response.

ABOUT THE OPEN BACK DESIGN : There is noticeable noise leak at high volumes and the user can hear the surrounding noise only at lower volumes. So, if you're in a room with a couple of people talking, the noise leak at moderate volumes won't annoy them but definitely hear what you're listening to and you won't be able to hear them talking.

P.S : I had to make a choice between these and the audio technica ath-m70x and I don't regret my decision :P

I'm a communication designer and needed budget studio headphones to explore and experiment with sound, I seriously didn't expect such a great sound experience from these at this price! A job well done.

Don't use them without a sound interface, high impedance headphones need amplification to reach true potential (it is really worth it) otherwise it's just like a hamster (your phone) trying to power the grid...
You'll get a very wide range of sound, these give out a flat and true sound but because they can reach high frequencies might be bright for some people, for me though brilliant. If you like heavy thumpy bass and probably have a glittery phone cover, don't buy them. But if you are looking for an honest sound and are open to discovery in the music and films that you already love, these are for you.

Music listening - Very layered sound experience, high resolution wide sound stage, simultaneously you can interpret the deep balanced bass/warm notes and the detailed brighter instruments, all of this at any single point in time. You can almost summon any artist you feel like at your home (emphasis on almost, like 98% there). Used them with guitar amp, couldn't hear the sound crack even at high volumes.
Films- The voice of the actors has an emphasis on the emotion of the dialogue (only with good actors though), the ambient and foley sounds are very well conveyed and apart from being detailed, they give a good sense of space and distance because of an open-back design. It adds a layer of meaning to the film. Same with music too.

They are very well built, are sturdy, I think they are very aesthetically designed (subjective matter), use of material gives a premium tactile sense when held, the velour pads are very soft and skin-friendly, the ear kind of nests into them as they cover your ears completely (If you have oddly wide ears, can't promise anything ) bhaut jada comfort can wear for hours, the metal band might be slightly tight for some people in which case put some books between both earpads to expand them a bit. The cable is coiled, reasonably good quality which isn't an excuse to use them rough, pls don't. Wouldn't travel with them.
I hope I didn't do a shabby job with the artwork

Tested on inbuilt DAC of Asus ROG MAXIMUS VIII HERO ALPHA & Samsung Galaxy S9+

The frequency range is very wide & is very detailed. You can notice the deepest bass & the highest notes & percussion from a track. There are sounds in the songs which you will hear for the first time if you never used a quality grade headphones. The sound feels natural & bright. I do not find it to amp up highs, mids & low. But highs sometimes are too sharp, think too much piercing. I burnt it like 3 night in a row, (whenever I slept), the sound became more pleasant & warm. But that could very well be placebo. Do not expect boomy base like Sony or Bose. They are well balanced imo & really rich in detail. It doesn't distort at high volumes, though I would near a good amp to pump this beast to max. To be honest tho on my system I use it at 30-50% vol most often don't need more. I do not use these on the road or travel with it. For that, I have one Sony IEM & Bose SoundSport wireless. Vocals sounds so captivating, so much of depth.

Open back, greatly increases the dynamic range, in games, I can easily position enemies & other players on the footstep. Music doesn't feel 'suffocated' it feels as if it got some breathing room. Sounds in movies & Netflix often sounds spaced & not just 'in my ear' feeling with headphones. You need to try open backs, that is my thought. Open backs aren't meant in public/crowded space use, you can use it in your uber ride maybe. People just beside you will be able to make out what you listing to. The noise leak at moderate vol will not annoy most though. Also if you pause your music or mute it you can clearly hear the world around you. The brilliant sound stage offered with quality open backs is well worth it imo.

My gripes are the initial sharp highs, no detachable cables, & the silly nylon pouch. But that's nitpicking.
If you are confused with Beyerdynamic DT 990 Pro & Edition, just get the Pro, its t...

i was using sennheiser HD 419 for 4 years. It's an awesome transition from HD 419 to DT 990
i'm not using any dac/amp right now but still they sound pretty decent.
The build quality is great even though the earcups are made of plastic material

This is one of the finest headphones i've ever listened. Coupled with LG G7 and the music is never like it before. Best value for money. Bass is precise but slightly less for me. I thought i might have to compromise on the bass. But eq'd and the driver responds well to the eq. So you can happily eq to your taste. Bass is fantastic. Mids are flat almost. Highs are rightly elevated. Resolution and sound stage are unparalleled to any headphones of this price.