Koss Porta Pro On Ear Headphones with Case, Black / Silver
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Brand | Koss |
Color | Black/Silver |
Connections | Wired |
Model Name | Koss Porta Pro |
Headphones Form Factor | On Ear |
About this item
- Make sure this fits by entering your model number.
- Designed for deep bass performance
- Comfortable, secure fit with adjustable headband and multi-pivoting earplates
- Two adjustable temporal-comfort zone pads shift the pressure and perfectly balance the ear plates on your ear
- Collapsible for maximum portability, includes carrying case
- Connector Type: 1 x Headphones (mini-phone stereo 3.5 mm)

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From the manufacturer


Overview
The acclaimed Koss Porta Pro has set performance and comfort standards for personal listening worldwide.
- Cord: Straight Dual entry 4ft
- Distortion: < 0.2%
- Impedance: 60 Ohms (at 1kHz)
- Plug: 3.5mm/6.4mm
- Sensitivity: 101 dB SPL/1mW
- Weight: 60g
Porta Pro on Ear Headphones
The acclaimed Koss Porta Pro has set performance and comfort standards for personal listening worldwide. Designed for those with refined musical taste, the Porta Pro continues to be one of the most popular headphones around the world.
Known for its high-level of comfort, the Porta Pro has adjustable temporal pads to relieve pressure on the ears. Its lightweight, open-air cushions for hear-through sound keep listeners aware of their surroundings while delivering exceptional sound. The oxygen free copper voice coils and dynamic elements allow the Porta Pro to deliver rich bass and a remarkably wide frequency response.
Whether you’re listening at home or on the go, the Koss Porta Pro delivers all the excitement of a live performance.


The Ultimate Portable Headphone
Key features
- The ultra portable on-ear headphones
- Comfort Zone setting on temporal pad for comfortable secure fit
- The ultimate active headphones with a collapsible headband design for protective storage
- Dynamic element for extended frequency response
- Oxygen-free copper voice coils deliver deep bass and signal clarity
- Includes a convenient carrying case for protective storage
- Covered under the Koss Stereophones Limited Lifetime Warranty
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Customer Rating | 4.7 out of 5 stars (9557) | 4.3 out of 5 stars (5564) | 4.2 out of 5 stars (437) | 4.3 out of 5 stars (302) | 4.7 out of 5 stars (4624) | 4.5 out of 5 stars (41529) |
Price | $34.99$34.99 | $18.69$18.69 | $6.99$6.99 | $59.99$59.99 | $71.00$71.00 | $9.99$9.99 |
Shipping | FREE Shipping. Details | FREE Shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime | FREE Shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime | FREE Shipping. Details | FREE Shipping. Details | FREE Shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime |
Sold By | Koss Stereophones | Amazon.com | LuxeMart US | Koss Stereophones | RPSB Tech | Amazon.com |
Color | Black/Silver | White/Gray | Black | Beige | Black | Black |
Fit Type | On-Ear | On-Ear | On-ear | on-ear | over-ear | On-Ear |
Item Dimensions | 6.81 x 2.00 x 8.94 inches | 6.50 x 2.50 x 6.50 inches | 5.00 x 4.00 x 2.00 inches | — | 6.70 x 7.90 x 3.90 inches | 5.87 x 1.81 x 7.87 inches |
Item Weight | 2.79 ounces | 1.52 ounces | — | 1.05 lbs | 0.66 lbs | 4.76 ounces |
Special Features | foldable, lightweight | Sports-Style | lightweight | volume-control | Lightweight | foldable, lightweight, tangle-free-cord |
Product description
Product Description
Dynamic element design for deep bass performance; Comfort zone setting on temporal pad for comfortable, secure fit; Multi-pivoting earplates and adjustable headband for added comfort; Collapsible for maximum portability when listening on the go; Includes convenient carrying case; Straight, dual entry 4 foot cord; Frequency response: 15-25,000 Hz. It is not meant for noise isolation. If volume too low, the listener should turn the volume up. This is handled through the device that the headphones are plugged into. The headphones do not have volume control
Amazon.com
Koss introduced the PortaPro headphone back in 1984, and they've been a hit ever since. To this day, they still deliver excellent sound quality, particularly for phones in this price range.


The Koss PortaPro collapsible stereophone combines high-quality sound reproduction with a unique design for the ultimate in convenience and comfort. These over-the-head headphones have a dynamic element design for deep bass performance and a frequency response of 15 to 25,000 Hz to ensure the music comes through clear and bright.
Also designed for comfort, these headphones have two adjustable temporal-comfort zone pads to shift the pressure and perfectly balance the ear plates on your ear. The open-earphone ear plates are multipivoting and, together with the adjustable headband, allow for maximum comfort.
The PortaPros are collapsible and come with a carrying case, so it's still easy to take them with you even when you're not wearing them.
Koss offers a lifetime warranty on its PortaPro stereophones.
Specs
- Frequency Response: 15-25,000 Hz
- Impedance: 60 ohms
- Sensitivity: 101 dB SPL
- Cord: Straight, Dual Entry, 4 feet
What's in the Box
Koss Porta Pro HeadphonesFrom the Manufacturer
Dynamic element design for deep bass performance; Comfort zone setting on temporal pad for comfortable, secure fit; Multi-pivoting earplates and adjustable headband for added comfort; Collapsible for maximum portability when listening on the go; Includes convenient carrying case; Straight, dual entry 4 foot cord; Frequency response: 15-25,000 Hz.
Product information
Color:Black/Silver | Style:On-Ear HeadphoneProduct Dimensions | 6.81 x 2 x 8.94 inches |
---|---|
Item Weight | 2.79 ounces |
ASIN | B00001P4ZH |
Item model number | 6303157 |
Customer Reviews |
4.7 out of 5 stars |
Best Sellers Rank |
#132 in On-Ear Headphones
|
Is Discontinued By Manufacturer | No |
Date First Available | May 14, 2003 |
Manufacturer | Koss |
Language: | English |
Technical Specification
Warranty & Support
Feedback
Customer reviews
Top reviews from the United States
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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 fit (I have a big head); they stay put moving around, jogging, working out
+ continuously adjustable headband (no notches) helps achieve ideal fit
+ on-the-ear design with soft pads so ears don't get warm/hot
+ foldable for portability
+ open back design makes it sound more like listening to speakers in a room instead of music just focused inside your head
+ open back design lets outside sounds in so you're aware of surroundings (great for jogging)
+ lifetime warranty (haven't used yet; if you're careful, these shouldn't break)
Cons -
- bass doesn't extend super low; not much bass output below about 50 Hz
- for electronic and rap/hip-hop music, lack of very low bass is an issue with SOME songs. MOST songs sound fine.
- open back design will leak what you're listening to into the nearby environment
- headband may occasionally pull a hair; adjust the band BEFORE placing on head and do not adjust while on head to prevent this
- occasionally a small hair may get stuck inside the driver causing a slight rattling noise; gently remove earpad and blow out the hair to fix
- earcups pivot slightly for comfort, but mine developed a creeky noise when pivoting in the left earcup; sometimes audible during listening
Conclusion:
These are by far the best sounding headphones I've heard anywhere near their price range. I honestly think you'd have to spend at least 2-3 times as much to get better sound. They are also the most comfortable headphones I've ever worn: very adjustable, ears don't get hot, stay firmly put with just the right amount of pressure. It's easy to see why they've been around for about 30 years and their design hasn't been significantly changed. "If it ain't broke, don't fix it" applies here. Very highly recommended. Please let me know if you found this review helpful by voting on it. Thanks!
The latest pairs appear to be manufactured differently; they have issues with sliding the plastic tabs over the metal strap, popping and muddled sound, and a plastic cover where the screw was on the left can. I had assumed initially that this was a change in the manufacturing process, that is until I received a pair of the special edition Koss PortaPros that were recently release, which were identical to my previous pairs in every way except the color-way. So either the generic colors are being manufactured differently or the headphones I have received are not authentic.
I will say these headphones are usable, though having owned multiple pairs the pairs I have received do not live up to my expectations. My review for the previous pairs of headphones would be 5 stars, unfortunately the latest pairs I have received do not deserve the same rating.
I have attached photos comparing the build quality of a previous pair I own to that of what I received from Amazon. You'll notices differences in the molds used to cast parts of the headphones. These capture some of the issues but its hard to explain the feeling of what appear to be tight manufacturing tolerances and warped plastic.
Really, it's kind of staggering how great these sound for this price. I'm no expert on the tech side of things regarding audio, but I can tell you the sound is crisp, the bass is low and impactful, and the highs are pleasingly lacking in screech and tinny-ness (that's how I'm going to word that; sorry... 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. Here's a breakdown to get right to the point:
Pros:
--They just sound good. My eyes kind of went wide when I kicked these on through my iPhone (first tried out "We The People" from A Tribe Called Quest because of that great beat right off the bat and was not disappointed, obviously). As I said above: good highs, good lows.
--They are very comfortable. They have a "Comfort Zone" switch from low to high, the pads (which swivel!) are nicely -- well -- padded, and there's another buffer of foam that sits just above your ears to take some of the pressure off your ears as well.
--They are VERY light. Since they are simply headphones attached with a thin metal strip, they seem to weigh nothing at all, a huge bonus for long-term users.
--If you take them off to adjust them, they will probably not pull your hair, which is a common complaint I've seen in these reviews. Do not adjust them while on your head, and you'll likely be fine. I've never had a single hair-pull.
--They accommodate a very large head at maximum adjustment. My head is large enough to have it's own gravitational pull (Thanks, Mike Myers!), and these fit PERFECTLY.
--The cord is not very long, and for my tastes -- especially given these are being sold as PORTAble -- that's VERY appealing. There's nothing worse than doing dishes or cooking and getting your headphone cord stuck around a drawer knob, thus ripping the phones off your head and sending you into a rage that ends nations. The shorter cord mitigates that global tragedy.
--I think they look cool!
Con:
--Yes, just one con for me so far: they make my ears hot. However, this is more of a personal problem; most people I know do not have this problem, but if I put ANYTHING on my ears, they are red-hot within minutes. So, ignore this con if you're a normal human being and not approaching the surface temperature of the sun every few hours. If the pads can be traded out for nice leather ones or something, I am not aware of that although I have looked on Koss's website where the pads can be bought.
In short: If you need a spare pair of 'phones or even a single pair for most situations (probably not great for exercise, however; dunno), you really can't go wrong with these. Thumbs up from this fella!
Top reviews from other countries

Vor nun über 13 Jahren kamen meine Eltern aus den USA zurück und hatten meiner Bitte entsprechend diese Kopfhörer im Gepäck. Damals hatte ich noch keine Ahnung, was ich mir damit ins Haus holen würde, ich wollte einfach ordentliche Bügelkopfhörer ohne Schnickschnack zu einem vertretbaren Preis.
Der Sound hat mich direkt aus den Socken gehauen. Sauber drückender Bass, perfekte Mitten und klare, nicht übersteuernde Höhen, so wie Kopfhörer sein sollten. Daran hat sich bis heute nichts geändert. Aber das ist ja teilweise Geschmackssache - ich jedenfalls war und bin höchstzufrieden. Der offene Bau lässt Geräusche von außen eindringen und macht die Koss Porta Pro auch zum perfekten Begleiter auf dem Fahrrad.
Doch der Sound ist nicht das einzige, was mich restlos überzeugt hat: der Tragekomfort ist für mich unübertroffen. Am Anfang hatte ich diese Funktion noch etwas belächelt, aber die Einstellbarkeit des Anpressdrucks ist wahrlich Gold wert. Da drückt und rutscht nichts, der stufenlos verstellbare Metallbügel hält alles perfekt an Ort und Stelle. A propos: dass der Bügel komplett ohne Polsterung auskommt, mag am Anfang befremdlich und wenig komfortabel wirken. Das Gegenteil ist der Fall, denn die Kopfhörer "hängen" nicht am Bügel, sondern werden auf zwei Schaumstoffkissen über den Ohren an den Kopf gepresst. Der Bügel hat praktisch keinen Kontakt zum Kopf. Etwas schwer zu erklären, wenn man sie in der Hand hat, wird das Prinzip aber sofort klar.
Was für mich noch wichtig ist, ist die Haltbarkeit. Und - wie oben bereits angedeutet - liegt der Koss Porta Pro hier eindeutig in der Schwergewichtsliga. Über 13 Jahre war er mein ständiger Begleiter, auf Festivals, auf Reisen, im Alltag, egal wo, egal wann, ob nüchtern oder sternhagelvoll. Er wurde oft überstrapaziert, ich bin mehr als einmal (sehr viel mehr...) mit dem Kabel irgendwo hängengeblieben und habe ihn mir vom Kopf und die Hörmuscheln aus dem Halter gerissen (die übrigens nur eingesteckt sind, ein Klick und sie sind wieder da, wo sie hingehören, da bricht nichts ab!), ich habe mich draufgesetzt und im Zelt drauf geschlafen, sie flogen aus allen erdenklichen Höhen auf den Boden - nichts davon hat auch nur den Hauch eines bleibenden Schadens hinterlassen. Kein Bruch, kein Verbiegen, keine Risse, nichts dergleichen. Die Teile sind wahrhaft unverwüstlich.
Letzte Woche ist mein erstes Paar den am Ende doch unvermeidlichen Kabelbruch-Tod am Stecker gestorben. Mittels Iso-Tape hätte man das Leiden wohl noch künstlich verlängern können, aber er sollte in Würde gehen. Es war ein ergreifender Moment, ich hatte praktisch ein Drittel meines Lebens mit diesen Kopfhörern verbracht und vermutlich eine innigere Beziehung dazu, als manche Menschen mit ihren Partnern haben.
Good night, sweet prince. See you on the other side.
Nichtsdestotrotz ist natürlich neues Spielzeug was tolles und ich freue mich über meinen neuen Bügel. Im Vergleich haben auch die Haltepolster über den Ohren über die Jahre an struktureller Integrität eingebüßt, der Sitz ist jetzt noch ein bisschen besser, als ich es in den letzten Jahren gewohnt war. Also alles peachy, auf die nächsten 13 Jahre!
tl;dr: Fünf Sterne sind für diese Kopfhörer eine Beleidigung. für mich gibt es im Bereich des mobilen Musikgenusses keine Alternative, ich werde diese so lange tragen, bis die Produktion endet. Und dann werde ich mir wahrscheinlich einen Vorrat anlegen. Wenn man von einer Lebensdauer von 10 Jahren ausgeht (was angesichts des letzten Paares und der doch meist eher unsanften Behandlung sehr konservativ gerechnet ist), dürften mir fünf bis sechs Exemplare locker reichen. Ich reserviere schonmal einen Platz im Kellerregal...

Koss/Hama uk honoured the lifetime warranty for my first set but made it extremely difficult to claim on my second set (they basically refused) however I bought another set anyway as I need something small like these and can wear them for hours. My 3rd (and final) set look absolutely ridiculous lol. They are taped together to within an inch of their life (which they are barely clinging too) I have also had to use string to hold the left earpiece attatched to the housing.
My first set was purchased in 2011 and is now 2018 and 3 porta pro’s later..So I guess some may say good going, but these were not my only headphones in use in that timeframe. Mainly the Koss PP are used fore home & tv watching only. I use Bluetooth cans for work commute, gym etc. Either way the Koss are great sounding but ultimately not a long term solution. I’m now looking for something different. My time is up with porta’s.

Positiv:
- Toller, definierter Klang.
- Klassisches Design.
- Guter Tragekomfort.
- Sehr leicht.
- Gutes Preis-/Leistungsverhältnis
Negativ:
- Haare können konstruktionsbedingt ab und an "eingeklemmt" werden.
Für mich einer der besten Kopfhörer auf dem Markt und auch aus preislicher Sicht sehr attraktiv.
Ich vergebe fünf Sterne, da der Kopfhörer aus ganzer Linie überzeugt hat!
Über ein nützlich würde ich mich sehr freuen, wenn euch meine Rezension gefallen hat.

Reviewed in Germany on April 6, 2019
Positiv:
- Toller, definierter Klang.
- Klassisches Design.
- Guter Tragekomfort.
- Sehr leicht.
- Gutes Preis-/Leistungsverhältnis
Negativ:
- Haare können konstruktionsbedingt ab und an "eingeklemmt" werden.
Für mich einer der besten Kopfhörer auf dem Markt und auch aus preislicher Sicht sehr attraktiv.
Ich vergebe fünf Sterne, da der Kopfhörer aus ganzer Linie überzeugt hat!
Über ein nützlich würde ich mich sehr freuen, wenn euch meine Rezension gefallen hat.


Build : Tiny, light and very comfortable to wear. would be great for running or in the gym. Fit snug and you forget you're wearing them. They look great, very retro and cool. You could wear these walking around the streets without any crazy looks.
Sound : I'm a bit of a headphone addict and have lots of IEMs and headphones. The other on-ear headphones i have are Sennheiser HD25ii (£130), and Yamaha HPH200 (£90). These little Koss Porta Pros can easily compete with both of these in sound quality. In comparison to...
HD25ii ; both have punchy, fun deep bass. the Senns are a tiny bit more accurate i.e. resolution, but both have great weight. Senns are a bit more detailed but only cos they are brighter i.e. clearer highs which a lot of listeners don't like cos it can get tiring (shrieky, sibilance). They are both equally as dynamic. Senns are more DJing accurate. The Koss are more fun and engaging. the Koss also have the wider soundstage. The stereo effect is further out your head. I like both equally. Value - Goes to koss obviously. What you get for £27 is outstanding.
Yamaha HPH200 - these are open back on ears. Bass on both is very simillar. Warm and punchy. Yamahas slightly more detailed, but both are warmer and richer sounding than the Senns. The Yamahas are wider sounding with bit more punch in the drums. Both are fun sounding cans. Yamahas again bit more dynamic. Koss is again more engaging, bot both are more musical than the Senns. My pref - maybe just goes to Yamahas cos they represent instruments very naturally and organically, but it's again VERY close which speaks wonders for the price of the Koss.
Too many budget headphones and IEMs get the title "giant killer" these days, but these really deserve it IMO. The price to performance ratio is outstanding. The biggest compliment is they are sooo musical and fun, a really intimate sound that works well for so many genres. The soundstage is very wide and deep. Quite 3D like actually.
If you'd like some advice for other budget sets which can compete with mid-fi sets here are my recommendations;
In ear earphones - Xiamoi Piston 3s (£20 on Amazon)
Earbuds - GranVela® Mrice E100 EarBell... currently unavailable on Amazon, but £20 on eBay
Both of these have excellent sound and actually sound very similar to the Koss Porta Pro funnily enough.

But I have, until now, had no joy finding anything that can compare sonically to these awesome little headphones.
So what is it that surpasses the Koss' brilliance?..... Audeze LCD2C Planar Magnetic Headphones, which cost me £550 ! Yes the only headphones that better the £35 Koss PortaPro cost £550 - or more... they are currently £899 on Amazon!
This is after an extensive search, and having listened to bucket loads of headphones.
So go ahead and buy these, but be warned, if you want some with the same sonic performance, but more comfortable, you will need to go seriously high end.
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