Are these better than beats are they more comftorable and do they have better sound quality, also does it have a mic

To further comment on RVDIII's review... Beyerdynamic is a top tier world class company that has been in the business of manufacturing headphones, mics and amplifiers since about 1940. With the emphasis on Headphones. The headphones of various models are tried and tested and have been used in studios both large and small, commercial and private from them till now. I currently own the 770 Pro 250 ohm and the 990 Pro 250 ohm now for reference mixing in my personal studio. A lot of people ask about the "ohm" rating/#. Hope this helps: If you work with headphone amps in your setup, or any professional +4 higher output gear, then get the 250 ohm, as they provide MORE resistance to those (amplified/higher volume) signals so you don't accidentally destroy your ears when connecting. The lower rated ohm headphones in all models are best suited for -10 lower output connections. They provide LESS resistance to the signal when it passes through and therefore the volume is ultimately louder do to it not "resisting" or "restricting" the signal which is what you ultimately need for low output gear/devices that are not amplified. Both high and low ohm models can be used in either situation, you will just have to be careful w pro gear or headphone amps with the 80 ohm, and may not like that your audio doesn't get loud enough on the 250 ohm models without a headphone amp in the signal chain. Cheers to you all!

I see alot of reviews saying these headphones fatigue fairly quickly. I saw simuliar views on the grados and after an hour they began to really hurt?

This is a common complaint, but let me clear things up a bit. Treble can sound fatiguing for two reasons: 1. energy storage in the treble, 2. loud treble. Energy storage is very bad, think of when you ring a bell. After the initial strike the bell continues ringing for several seconds. You don't want your headphones to do this, because not only will you get loud fatiguing treble, all the notes will blend together. An eq will not fix this. The second reason is having clean treble that's just louder than the rest of the spectrum. Grados are fatiguing for the first reason, DT990s for the second. The DT990 actually have very fast treble (no ringing), there's just a good 4-6dB bump from roughly 4 or 5khz up to about 8 or 9khz. If you tune that down with an EQ they sound great. Honestly I don't even use an EQ anymore, but if it bothers you and you have an eq, it's easy to fix.

How do these compare to the Sennheiser HD 598 Headphones?

I own both sets. The Sennheiser HD 598 and their predecessors HD 595 (see my review) are extremely SMOOTH, headphones you can fall asleep to. The Beyerdynamic DT 990-Pro 250 ohm are ANALYTICAL headphones. You will not fall asleep with these as they demand your full attention. Different purpose I would say.

since there are the vents on the side, does the sound leak? can others hear it?

Yes, they are open air design, so everyone will probably hear what you're hearing if they're in the same room. Because of this, I have not taken mine to work. If you listen quietly you can't hear the sound leaking, but at the level I like to listen (mildly loud) people can easily tell what you're listening to.

Noise Control	None
Headphones Jack	3.5 mm Jack
Model Name	DT990
Connectivity Technology	Wired
Wireless Communication Technology	3.5 mm
Included Components	DT 990 PRO BLACK EDITION, Jack Adapter 6.35mm, Drawstring Bag
Age Range (Description)	Adult
Material	Stainless Steel
Specific Uses For Product	Music
Recommended Uses For Product	Music
Compatible Devices	Universal
Control Type	Touch Control
Cable Feature	Retractable
Item Weight	0.35 Kilograms
Water Resistance Level	Not Water Resistant
Customer Package Type	Standard Packaging
Unit Count	1 Count
Style	Over-Ear
Control Method	Push Button
Number of Items	1
Item model number	718033
Is Discontinued By Manufacturer	No
Color Name	Black
Connector	Cable
Hardware Interface	3.5mm Audio
Material Type	Stainless Steel
Size	250 OHM
Processor Count	4

beyerdynamic (ベイヤーダイナミック) DT 990 PRO ヘッドホン 250オーム 限定版 ブラック ストレートケーブル

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beyerdynamic (ベイヤーダイナミック) DT 990 PRO ヘッドホン 250オーム限定版ブラックストレートケーブル