Sound quality is great for over the ear headphones, but the cord quality does not stand up

have two pairs of these now and they work great - light, don't squash my head (mine's on the large side, too), and sound quality is excellent, outstanding for the price!

absolutely great quality in build and sound

Pros- Excellent sound quality, good

Sound quality was poor

The audio quality is top notch and you won't regret this purchase.

Lightweight, comfortable, and great quality sound

Excellent sound quality

Nice headphones for listening at a low noise environment, the sound quality is good, but I expected it to be a bit more comfortable

They rate highly for pure sound quality, and if you like the on-the-ear style (as opposed to in-the-ear or over-the-ear) they're some of the best you can buy under $100, probably the best buy on the planet in the under-$50 category in any style

The quality is great

Yes they seem cheap, but the sound quality is amazing and the design is the only style I've found that puts no pressure on glasses frames (even thick frames!)

The build quality of this thing hasn't improved at all since I first bought one

haha).Koss doesn't have the best reputation in the world as far as consistent quality, but this model is one of their high points.

haha).Koss doesn't have the best reputation in the world as far as consistent quality, but this model is one of their high points.

The quality is good but wires eventually wear out.

Decent quality headphones that have served me well over the last 3.5 years

Fantastic audio quality, even for movies!

The sound quality is pretty darn good

I was skeptical at first, but great sound quality

It really does strike me that this product is the "people's headphone", meant to combine rather uncompromising sound quality with reasonable durability

I have used them daily for about 2 years and the sound quality while not true stereo is great.

Incredible sound quality for the price, and very comfortable

Great sound quality, almost up to the standard of my huge over-ear studio headphones

Flimsy build quality, but boy, do these give out great sound for the price

Awesome headphones, unique design, compact and very good sound quality

Very good sound quality

Sure, you're not going to get the ultra-mega-pure-quality you might get from a pair of $400 Senns, but they are absolutely lightyears ahead of anything else I've tried at this price point (fifty bux at the time I purchased them).

I did end up buying third-party vinyl pads for the phones, as the ones it came with were poor quality

I am a big fan of Koss products because of the excellent sound quality and return policy!In the last 10 years I have only bought Koss for this reason

All of the raving 5-star reviews have probably convinced you of the PortaPro's superior sound quality and great value for the price - and they're right

the build quality is unacceptable... plastics look and feel flimsy

A quick search of this headphone on any respected audio/video forum will reveal largely positive reviews for excellent sound quality compared to the price point.

If you're looking for an inexpensive pair of good quality headphones, these are definitely for you

I had no idea how important sound quality could be until I had one a pair of these

But the sound quality is consistent and good for the price

The sound quality is phenomenal.

The build quality is decent but not up to par with more modern designs.

They're really portable and the sound quality is quite good

The sound quality of this headphone has always been great

Audio quality is really good, however the audio connector(connecting to the output device) just died after about a year of use

Sound quality, bass response as well as treble are excellent.

The sound quality is excellent, and I could ignore the fact they left my ears sore after a few hours use because of it.

Great sound quality for the price

Good price, good quality, good sound

Sound quality remains great and I am still very happy to have​ bought these headphones.

Sound quality not that good

The sound quality is really good and they are comforatable for many hours of use.

Awesome headphones, sound quality was outstanding

but they are very adjustable and great sound quality.

Amazing quality for the price

The sound quality was not quite as good, but still good enough to make this a good buy for under $30.00.

The sound quality is outstanding for the

Some users may prefer this but since I do not listen to bassy music, it feels like my music does not have a true sound quality

I love these, great sound quality, and adjustable for sensitive ears

On top of the fantastic sound quality, the headphones weigh barely anything, they're extremely comfortable

these are loud and they leak sound ;however, the sound quality is definitely clear and soothing at low volume.

Great sound quality and low price

Beyond the looks which frankly may turn some off these are some fantastic quality headphones

Good quality, especially the bass.

Sound Quality: There is a reason these are legendary the sound quality is astonishingly good for the price

Sound quality is good, but material feels very cheap

My pros, cons, and conclusion below:Pros ++ great overall sound quality, probably unbeatable at this or even double this price+ potent but not overbearing bass; fairly neutral mids and highs; no listening fatigue+ comfortable and secure

the bass is ridiculously good, the overal quality is decent but the bass is where it's at. portable. affordable

The sound quality is quite good after a few hours of using.

Excellent sound quality, iv'e been buying PortaPro's for 20 years simply because they sound awesome

superb quality for almost zero $

Once you start comparing them to some better quality stuff, though, you notice immediately what you are missing.

These are very nice headphones and the quality is good.

Sound quality is excellent.

Comfort could be better, but the sound quality is simply unbeatable at the price range

The sound quality is great, but the construction requires you to handle them with kid gloves.

Pros:-Insanely clever design, easy to adjust, easy to fold up-Brilliant sound quality for the money-Very light

They sound is great too although sound quality is not a major concern for me

These little guys are pure quality.

Their sound quality is exceptional

Good quality, great price!

Excellent overall sound quality, definition and good bass response!

The sound quality is freakin awsome!

The sound quality was great for the price.

Great quality folding headphones.

Good quality

Fantastic sound quality

Awesome and amazing quality sound.

Overall this is a great open-back headphone with good quality bass and is very comfortable

The sound quality, comfort of wearing, and retro design were all awesome

Sound quality is great

The sound quality is excellent, and I could ignore the fact they left my ears sore after a few hours use because of it.

But these PortaPro's are a fantastic purchase and I would highly recommend them to anyone looking for great sound quality at this price point

Good quality, good price, just like I thought, came quickly

Happen to recently own the superb Beyerdynamic A200 p DAC/Headphone Amp which really turns these headphones to amazing quality sound, but they are still excellent without this

Sound quality is muddied up by bass.

Ugly as sin, but the sound quality per price is tops

They sit well over the head and on the ears~ Couldn't have asked for a better quality pair of headphones, especially at this price!

Sound quality is fantastic for this style of headphoneHowever, I'm not sure what sort of role they fill these days-over the ear headphones are better

The sound quality is superior, and as someone who can't wear earbuds, they're a great over the ear option without getting too hot.

Sound quality is easy on the ear and never sounded harsh

The build quality and sound from these $40 headphones are unbeatable for the price

Excellent high-quality product; exactly as described and fast free shipping to boot

Very good sound quality

Expect to have your hair plucked out when you put these on or take them off, the sound quality isn't bad but they are painful to wear and even more painful to see yourself wearing in the mirror.

Fantastic sound quality and by far the best headphones for their price

I've tried a half dozen types of portable headphones for this specific purpose, and haven't found anything else even close in pleasant sound quality.

Amazing sound quality for the price

Excellent sound quality for the price

These headphones are great quality for the price and the guarantee can't be beat

Anyway, for the price range, sound quality, how light they are, how small they fold up, and aesthetics which I appreciate - I give them a 9/10.

When something like that happens you know they got it right!Looks aside, the PortaPros still remain classic because of their fantastic sound quality, but they definitely won't block out the majority of ambient noise, no surprise given their open-ear design

Great sound quality and foldable with its own pouch!

The sound quality is extremely good on my iPhone & iPads

I was skeptical at first, but great sound quality

Great sound quality for over ear technology.

good quality for such small headphones

Great sound quality, while being potable

The audio quality on these headphones are better than:Sennheiser HD 202 (own)Bose MIE2 (own)I've had these headphones stashed away for a year now, and decided to put them back to use after using the previously mentioned headphones.

Outstanding sound quality for the price.

Also, Its a nice joke to get it with gold plated 3 mm jack which i paid less than 50$. Design is not modern and may not fit a lot of peoples expectations but material quality and details exceptional

Fantastic sound quality, especially for the money

They're pretty comfortable, and the sound quality is not bad, except for what sounds to my ears like an exaggerated, slightly muddy bass

However, he says that the sound quality is amazing

The fit can feel a bit wonky at times, but for the price the sound quality is extremely good

The sound quality is great

The build quality seems cheap (or rather, it seems appropriate for a $20 pair of headphones), and the sound was not overly impressive

A little uncomfortable around the ears (top of the ears) but pretty good sound quality

excellent sound with good quality!

For under $50, it's difficult to find another set that rivals their sound quality and pleasurable though unusual design

excellent product, 100% good quality

Great sound quality for the price- Adjustable size for different head sizesCons:-

The sound quality is good enough that I can play around with the equalizer

Light weight, good sound quality, collapsible for travel

Quality is great, very light but looks sturdy

They have great sound quality, comfortable on the head (I don't have a problem with my hair getting caught in the wire), lightweight and highly portable

very good i love this small and good sound quality

One of the best qualities I think of these are the fact they are NOT noise cancelling

Sound quality is unbelievable for its price.

The audio quality is pretty good too, so it's definitely worth the money.

The audio quality is pretty good too, so it's definitely worth the money.

Good sound quality.

The plastic holding the ear piece is only molded on one side, which looks cheap, and the plastic is on the thin side though it doesn't flex freely, so seems to be of good quality

Their sound quality is excellent for casual listening and surprisingly good for critical listening especially when factoring in the unbelievably low price

Bought two as Christmas presents and they were BIG hits -- though not the most expensive headsets they guys had, they highly appreciated the sound quality, the ability to fold them into suitcases.

The sound quality is fantastic, these lay flat, they are lightweight (barely feels like I have them on

I think the sound quality is superior for the price and portability

The sound quality is pretty good

Once again I 'm not claiming audiophile quality here but pleasant with bass.

Excellent sound quality, headband can pinch hair

Amazing sound quality for the price

Great sound quality

Confortable headphones, good sound quality, compact design

Comfortable and excellent sound quality.

My daughter has a pair of Beats, on ear headphones, and these have a better sound quality.

For my ears, these are more comfortable and produce a better quality sound for a great price

Comfortable, excellent sound quality, retro look, folds down to a small size for travel or bag, simple corded headphones.

There is real base and a rich, warm sound quality.

The sound quality is excellent, with good bass response and excellent clarity

Excellent sound quality, headband can pinch hair

These are not noise cancelling and do not fit entirely over your ears like other headphones, but the fit is comfortable and adjustable and the sound quality is great for the price.

Also put them up against Beats, Skullcandy, Harmon Kardon, Sony, etc whoever else you want when it comes to a PURE SOUND QUALITY

Excellent sound quality but not comfortable.

Good sound quality

The 80s look has a lot of charm, especially up close, and while it can make them look like they're some really cheap throw-away headphones from decades past, they are anything but!The quality of sound is fantastic.

I bought these phones on a cyber monday deal and I have to say they are pretty good quality

And while the headband does occasionally have a tendency to rip my hair out, the superior sound quality makes up for that light annoyance

SOUND QUALITY ARE EXCELLENT

Light, good quality, and cheap!

Sound quality was better.

The sound quality in these lightweight headphones is just amazingly clear and crisp

Fulfilled my expectations: great sound quality for a very accesible price

The sound quality is crisper than my Senheiser PXC 550

The sound quality absolutely fantastic and the headphones are really comfortable

They seem flimsy but the materials are really good quality.

Great quality, good for exercise, however, these are extremely easy to break.

I love the sound quality.

Great quality and very affordable price

The sound quality on these are AWFUL.

Overall sound quality is quite good, definitely better than most headphones in this price range

Very nice quality headphones

The sound quality is pretty great for the price, the durability also seems pretty reliable

Sound quality is great for the price, but the wires broke after about 6-7 weeks of hard use, sound also became crackly after about 3 weeks

The quality of both highs and lows will cause you to ignore the enviorment around you and enjoy your world of sound.

Great sound quality, great packaging, overall amazing

No headaches, and still get great sound quality

The sound quality is the best that I can tell.

The sound quality is excellent and they are very comfortable.

It's a damn shame, too, because for the price you get pretty incredible sound quality

excellent as before

cheap，I like it