Rating: 
Summary: Koss UR20 - Best sound for the price
Review: I've used these headphones for a few months now, with the main use for my home computer. The bass range is very reasonably low, shaking my head at times (in my view that is good). In contrast, the treble is fairly high without hurting my ears. They are very sturdy, I've tripped on the cable innumerable times and have not broken them yet. This is not a recommendation to swing them from the cable though!One of the problems is (mentioned before by reviewers and I do stress it is true) the headphones getting hot and sweaty inside. I also found discomfort from too much stress on my ears. My recommendation is that you find a way for UR20s to stop them resting on the top of your ears. All in all, for the price, and the quality of the sound (which is very rich and bassy), the Koss UR20's are a best buy from Amazon.
Rating: 
Summary: Affordable, Quality phones. Couldn't be Happier
Review: I ordered these headphones pretty much because I had a few bucks left on an ... gift certificate and figured since I had already ordered a portable mp3 player and spend so much time on the computer listening to music (while working, surfing the net, wasting away time, etc) I could always use a pair of quality headphones.
I plugged them in and opened up my Winamp playlist the moment the headphones arrived and I took them out of the box. I couldn't be happier with them.
You know how there are certain aspects of a song you can only hear when listening to it through headphones? Background music, instrumental, balance tracks, sound effects and certain sounds to a song you just can't hear when listening to them through speakers at a normal volume level? These phones really make every part of the songs I listen to stand out. Songs I've heard thousands of times through speakers or my previous pair of mediocre headphones are completely new pieces of music for me now. The bass is great, outside noise is effective blocked out and it just seems every song I listen to now has a completely new, fresh, better sound to it. Without exagerrating, I can say that listening to one of my favorite songs with these headphones for the first time actually gave me goosebumps because I heard parts to that song I had never heard before.
For the price and the sound quality, these phones are an excellent buy.
Rating:
Summary: incredible sound performance, bad producing quality
Review: I once have KOSS R100. It is light, comfortable and provide
both strong bass and crisp mid-frequency response. HOWEVER,
you got to be careful when you put on and off it from your
head because it has a fragile plastic connection at earpads
and headband. Mine is broken already at both sides. :(
Rating:
Summary: Amazing!
Review: These headphones are great. You can't find anything else that sounds this good in this price range. Koss does stereophones right! I have had my UR-20s for more than a year. They still sound great and have been stuffed into my backpack almost every day since i bought them. One of my size adjuster clips has broken, but it is no doubt due to my reckless use. Even broken, they fit comfortably on the head. The ear cups are big enough for anyone's ears. They cover your ear completely and do not "crowd" your ear like the smaller UR-29s do. The bass is amazing and the insulating ring makes such a close seal with your head that you will not hear anything while you have these headphones on. I don't like listening to music while I sleep, but I have used these headphones as noise reducers (without playing any music) on many occasions and bus rides. Note that these headphones are larger than most. This is probably why they sound so great. I especially like that the headband is made of rubber coated metal to keep the phones close to your head, with a cloth balancing strap below that to make it comfortable in any situation. Koss is the king as far as affordable, amazing stereophones go. Buy the UR-20s and you'll be glad you did. I have had no problems.
Rating: 
Summary: Single worst product purchased ... ever
Review: These wounded awful and fell apart after two uses. The ear phones are way too heavy for the headset and fell apart. Do not purchase these.
--This text refers to
the R-80 option.
Rating:
Summary: Great 'Home' headphones
Review: I got these as a gift and was surprised at the high quality sound and excellent noise isolation. I listen to music (and the radio) mostly while working on the computer. These may be a home product but you'd be hard pressed to find higher priced studio headphones which would provide better overall response with such clean bass. Check them out!
--This text refers to
the R-80 option.
Rating: 
Summary: Nice durability, average sound.
Review: I bought these headphones because my Aiwa HP-X222 headphones would always break. With the Aiwa HP-X222, the spot where the cord connected to the headphones was very cheaply made, and just one light trip over the cord would break it. So I bought a pair of Koss R-80 headphones for durability, and I am very satisfied. The cord is coiled up, so it doesn't lay around on the floor and get tangled around your feet, causing accidents. The cord can stretch pretty far, and it connects using a plastic piece which clips into the headphones. You can unclip the cord from the headphones, in case it gets tangled. If you do manage to trip over the cord, or yank it by accident, the cord will just pop out of the headphones. The plastic piece feels a bit flimsy, but I haven't had it break on me yet. The sound quality is average. Low bass frequencies are slightly distorted, and high frequencies seem dull. My Aiwa HP-X222 headphones had much better sound quality, and clarity. Too bad they broke way, way too easily. I've been using my pair of Koss R-80 headphones for a few months now, and I have had no problems. :)
--This text refers to
the R-80 option.
Rating:
Summary: Just what I needed.
Review: I'm currently in the process of restoring about 150 vinyl records when my trusted friends, my Pioneer SE-306 headphones that I bought in Japan in 1978, gave out. I ordered the KOSS R-80's as replacements. I won't go into audiophile detail about frequency response, sound artifacts, and all that other stuff; I got exactly what I wanted. Lightweight, good isolation, all around good response, comfortable to wear for a few hours at a time and priced right. Don't expect any revelations when you use these, just the music. Ordered them on a Tuesday morning with free shipping and had them Thursday night.
--This text refers to
the R-80 option.
Rating:
Summary: Great for Stereo TV/DVD watching
Review: I've had mine for three years now, and I find the UR20s indispensible, since I live in an apartment and can't turn the TV up to a decent level otherwise. There's reasonable bass; you would expect so for the size of them. Always look at the specs. The low number is the bass, the high number (usually in the tens of thousands) is the treble. This set's bass is 30 Hertz. That's That's not a bad number; 20 is average, 12 would be phenomenal. The treble is set at 20,000 Hertz. Theoretically, only dogs can hear frequencies above that, but I think a headphone with a figure over that just seems to sound brighter in the treble, which is what I like. I hate unclear treble and muddy, distorted bass. Another number you look at is sensitivity; the better ones are always over 100. So, I guess based on the specs, these 'phones are about average. The cord length is excellent at 8 feet. I can be a reasonable distance away from the TV without straining the cord; I've even slept with them on without ear fatigue. These headphones make movie watching a whole new experience...you get surround sound without the expense! I've had a great experience with the UR20s and I recommend them for use with home theater, even if you just have a 20" portable like mine. You need an adapter to plug them into a home stereo, and there's plenty of cord where you can be either reasonably mobile or you can sit in your favorite chair some distance away. I think they're great. The only thing that would make them the best is better specs, and that's hard to find at this price range.
--This text refers to
the UR-20 option.
Rating:
Summary: Okay for a cubicle dweller
Review: I got this as a birthday gift last year to use at work and it does the job well. It eliminates background noise pretty well and audio quality is good. Ears do get hot after a while ( a couple of hours) and you'll need to relieve the heat every now and then by taking it off. Structurally the cable connects to the headset with the phone-jack like plastic connectors. These look quite flimsy. I have been careful about how I use treat the cable, but the plastic connector will probably get ripped sometime or the other. All in all, for the price it is a good buy.
--This text refers to
the R-80 option.
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