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This high quality portable stereophone set performance and comfort standards for personal listening worldwide. Over the years, much to the delight of devout PortaPro enthusiasts, Koss has preserved the original design and performance that made the PortaPro a portable music icon. Today the PortaPro remains the headphone of choice for the discriminating listener.The PortaPro features dynamic elements that deliver exceptionally rich, deep bass and a remarkably wide frequency response from 15 - 25,000 Hz to capture every nuance in your favorite movie or musical performance. Constructed from mylar, the elements are extremely rigid, minimizing mechanical distortion and ensuring exceedingly accurate sound reproduction. Neodymium iron boron rare earth magnet structures enable the PortaPro to deliver greater volume so you can hear every note, even when competing against the sounds of a commuter train with a low-voltage MP3 or disc player. Oxygen free copper voice coils improve signal transmission and conduction for cleaner, clearer sound. Foam earcushions provide an open, hear-through sound that lets you keep in touch with your surroundings perfect to wear while running, at work, or while traveling. Whether you're listening at home or on the go, the PortaPro will bring the excitement of a live performance to any recording.
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Technical Details
- Comfort zone setting on temporal pad for comfortable, secure fit- Multi-pivoting earplates and adjustable headband for added comfort
- Collapsible, folding design for maximum portability; Dynamic element design for deep bass performance
- Frequency response: 15Hz-25kHz; Straight, dual entry 4' cord with 3.5mm plug
- Includes carrying pouch and 1/4" adapter
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By AUDIO ACCESS
One modification/improvement, that can be made for KOSS Porta Pro and address the issue with leaking sound to surroundings. Is to replace the foam ear cushion with a sealed ear cushion.
Other reported benefits are enhanced Sound performance! The Sennheiser PX200 leatherette closed ear cushions/ear pads have the right size 2" (55mm) and fits perfectly on KOSS Porta Pro.
The benefit in sound performance is reported to be: A tighter bass with some overall improvements and better details, together with increased sensitivity (can play louder). The sealed ear cushion will make Porta Pro, maybe not a fully closed headphone but more a "semi-closed" headphone (still the backside of elements/drivers have openings), but the sealed ear cushions will reduce the leaking sound to the surroundings (maybe appreciated for other people during example a bus ride). The ear cushions for Sennheiser PX200 can be purchased on ebay.
By K. Harrington (CT, USA)
I purchased some Shure headphones for twice the price and they didn't have the bass that these under $50 headphones have. Currently I own three pairs of them.
If you are tired of buying cheaper headphones only to have them break after a few months, these are the headphones for you. They typically last me 6 to 9 months which is pretty good in my book. What usually breaks every time is the connection to one speaker. So I'm left with no speaker sound on one side.
With Koss, you just send them back along with $6 for shipping. Then you get a brand new pair back.
They are clunky looking, but they are super comfortable to wear.
The reason I have three pairs is that one broke so I bought another. When that one finally broke after a year, I bought yet another. Two pairs were sent back for fixing while I listened to the new pair. Now I have three new pairs.
I have let friends borrow them and they didn't want to give them back.
Before finding Koss headphones, I used to buy Sony headphones all the time. They would break (same no speaker on one side problem) after only three months. Then I'd have to throw them away. With Koss, I've received more than my money's worth.
By Marc Axelrod (Potter, Wi USA)
I've had these wonderful phones for three months. I use them for my ipod classic. The sound is rich and full. Strong bass with no distortion, even at high levels. Listening to Fleetwood Mac's "Dreams" makes the song sound like a dream. You can hear Stevie make sighs and sounds you don't hear on the cheap ipod earbuds.
And when you listen to Led Zeppelin's "Moby Dick," it feels like you're sitting right next to John Bonham as he pounds on the drums.
It's unbelievable how good these phones are. When you listen to the Counting Crows' acoustic version of "Amiee," with its mandolin intro playing in the left ear, and rich acoustic guitar coming through on the right ear, you will have an eargasm, baby! It is an experience!
The Portapros are also, hands down, THE most comfortable headset I've ever worn. You can adjust them to fit tighter or more loosely around the ears, and the extra padding really helps with the comfort.
I should say that these are not noise cancelling or sound isolating. I can't wear them in bed at night because even with the volume 1/3rd up on the ipod, my wife can hear them. Same thing with riding the train or bus. You won't want to wear them in public, partly because they look like something worn on the set of the 1984 flick Tron, and partly because your neighbors won't want to listen to your music.
But if you care about excellent quality sound, and you are not disturbing anyone, these are THE best sounding headphones you can buy under [...]. They are a BIG step up from the so-so ipod earbuds and a bigger step up from anything Walmart sells.
You should also keep in mind that your Portapros will only sound as good as your source. MP3 files on your ipod are not going to sound as crisp and powerful as listening to a cd, unless you rip with the Apple Lossless version (it takes up more memory on your ipod, but it's worth it).
I should say that these sound better on MP3 players than they do on Hi-Fi equipment. I definitely prefer my beloved Grado SR125s for listening with my stereo or with my laptop.
But the Portapros are a steal at [...].
I almost forgot to mention that there is a lifetime warranty on the Portapros. If they accidently break, and you still have your receipt, Koss replaces them for free. Awesome!
By D. Hensley (l-town, CO)
These headphones are the best light-weight(and reasonably priced) headphones i've ever heard! I use to think that to get good sounding headphones under $50 you had to get around-ear or in-ear headphones but these prove otherwise. First of all, most on-ear phones lack in bass but these are extremely responsive. If you have ever heard of the song "Bass I Love You" by bassotronics,you know that only good headphones or subwoofers can pick the bass up in this song but these had no problem of doing that, and the overall sound quality sounds completely natural. The only flaw in these is that the adjustable head band pinches your hair, but the sound quality is so good i didn't knock off a star just for that.
By DML (Madison, WI)
I just recently got this headphones and am still surprised at how great they are. I have never heard this kind of sound quality in a pair of headphones before. Koss also has a lifetime warranty on all their headphones which is also an added plus. I highly recommend these to anyone reading this.
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