Summary: I received my Pro4AATs last year as a Christmas gift, and I have to say they are the best headphones I have ever owned. Sound quality is crystal clear and they allow very little to disturb you while listening--the earpieces form a good seal about the ear without being irritating. I would consider them to be (mostly) noise-cancelling.
Pros: Unmatched sound quality, extremely durable
Cons: Bulky and heavy for some, I did not personally have an issue. Cord can be a bit of a pain to manage
Excerpt: If the ear cusions were twice as thick to keep the screens in front of the drivers off of your ears, they would be perfect. These things are like a vise anyway, and if they were to only rest on the cushions, just resting on your head, and not your ear too, would be awesome. Two hours watching a movie was torture, very uncomfortable. Like I said, redesign the cushions and you got a world beater, especially when used with a Schiite Valhalla 2 headphone tube amp.
Pros: Built like a tank, Clear Sound, Durable, Easy To Use, Great Sound Stage
Cons: Bulky/Heavy, Needs A Bit More Bass, Uncomfortable Very, Very Uncomfortable
Summary: My wife bought these for me this christmas. My band is starting to record and I couldn't be happier. They don't feel heavy to me, like some have said, they are very comfortable and don't slip and slide. Being a drummer, I move a lot and have had no issues. And I have to remove them from my ear when someone speaks to me, this is the biggest plus to me, I was worried that my playing would bleed through too much and I wouldn't hear the other instruments coming through the...
Excerpt: Can't believe these phones are still around. Listened to them in the early 70's on old records and they sound great. Look at the frequency response. That ought to tell you something. Extremely low distortion and the earpieces keep all the nasty sounds out!!!. You know like the neighbor and the kids etc. Personally I listen too Pipe Dreams religously and these are the best way to hear it. You can double or triple the cost and still not equal the sound.
Summary: Simply amazing. Headphone amp is a must to bring it out. Amp used is the fiio E11 and line out iPod in this case and very pleased with the match-up. I compare many headphones at this price range and none compare in accurate sound reproduction.
Summary: I bought these to replace my Sennheiser HD 250's. All I can say is WOW! I'm using these headphones to produce electronic music, everything is clear and recognizable, it has a flat frequency response so you are getting exactly what you hear from the audio signal into your headphones and finally into your ears. I've been able to create some solid mixes with these headphones and would highly recommend using them for electronic music production!
Summary: As an aging audiophile and music connoisseur, I bought my first Koss stereophones thirty eight years ago. I've owned others (Sennheiser and Audio-Technica) but none compare to Koss. It's important to understand that Koss will reproduce faithfully whatever you feed into it, therefore, in order to give an accurate, subjective review, one must play an accurate, digital sound source.
Summary: These headphones have been a set standard in the recording industry for ages. The legacy continues here with the Pro4AA Titanium. Sometimes it can be hard to get a bearing on a middle ground with mixes these days, especially due to the influx of headphone choices. These headphones always give you a firm grip on the reality of a mix. The Pro4AA Titanium model is comfortable over long periods.
Pros: Clarity, depth, and persistence. Great auditory texture. Quality construction is a one of a kind feel (a space age material beating out all of the cheap rubber out there).