I enjoyed these Headphones!For those of you who have trouble with it pulling your hair, my remedy was to wrap painters tape (blue to match the highlights on the headphones) around the middle section of the headband. It also keeps the headband the perfect length so I didn't have to constantly adjust it every time I took it off. This DOES make it less portable for pocket carry, but I never used that anyway. The temple pads were giving me migraines so I ripped them off. Then I replaced the foam earpads with the YAXI ones. Now everything is great.---MY HUNT FOR THE BEST BUDGET HEAPHONES:(I use my headphones for 80's Rock, 90's Alternative, Oldies, Classical, and plenty of TV and Movies)-SHORT VERSION...BUY THE KOSS KPH40'S AND SOME YAXI PADS!LONG VERSION...FIRST I HAD THE PX-100-i's for like 10 years. Loved them, but the connector broke a few years back. THEN I got the PX-100-ii's. I didn't like it as much as the first iteration. Way too much Bass! And the bass bled like crazy. They sounded super muddy. But everything else sounded like my old px-100's. Then a few months ago, THOSE broke at the connector (I'm nice to my headphones, they get plugged into my computer and stay there, there's really no reason for those connectors to go faulty, just bad manufacturing). Then I found out that Sennheiser was no longer making ANY PX-100's anymore, so I had some research to do...NEXT WERE THE KOSS PORTAPROShttps://www.amazon.com/gp/product/B00001P4ZH/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&th=1-The sound is 'soft' for the mids and uppers, and a slightly boomy bass. Very easy-listening. The bass was a little too boomy for my taste, but it wasn't bad. The high's weren't sibilant, which I loved. I missed some clarity from my px-100's, but it was worth it. What I didn't like about it was that the bass bled into the mids, which made some things sound weird. Still, I liked them better than my original sennheiser PX-100-i's which is saying something. The PX-100-i's have highs that are harsh on my ears, too much sibilance. The Bass on the PX-100-i's can be a little to boomy also, but no bleeding. It had an accurate, clear sound I loved. But overall I considered the Portapro's a nice upgrade.KOSS KPH30ihttps://www.amazon.com/gp/product/B075FBRYM1/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&th=1-But, I didn't like the bleeding bass of the Portapro's, so I kept hunting. I tried the Koss KPH30i's next. VERY nice. I consider them better than the Portapro's. Slightly more clarity in the highs and the bass didn't bleed. The high's were only a little more powerful than the Portapro's, pretty much had the same 'soft' sound quality I liked in the Portapro's. The bass was a little underwhelming. I could tell where the bass was meant to be, which was nice, but it wasn't boomy at all. Like HEARING the bass, but not FEELING it. At first I really appreciated that, especially for classical, but after a few days I kind of missed the bass punch of the Portapro's. The biggest problem with the KPH30i's were they were uncomfortable! The earpads are huge and they press on my ears hard. Its not just the compression strength causing it, its the flat earcups that press against the entire ear. I could only wear it for 10 min before taking them off. So I tried the Grado Ear Pad mod, put it around the earcups and it was MUCH better. Warning, do NOT remove the original foam of the headphones. They tear and you cant get them back on. I made that mistake and now my KPH30i's high's hurt my ears because there is nothing between my ear and the driver. I wished I would have kept the original foam on, and THEN put the Grado pads over them. Instead I had to use the paper towel mod and now the high's don't hurt my ears. The hole in the pad still make a tunnel effect and I feel like that creates a pressure chamber that hurts my ears over time. I DO love the silicone resting band on this set. With that and the Grado pads, these became a lot more comfy, but I still would have to take them off after a couple hours, from my ears over-heating and the firm pressure on the ears. That combined with the lack of bass punch, I decided to keep looking.KOSS KPH40https://www.amazon.com/gp/product/B09KZC94X1/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1-I had heard that the KPH40 was the sound 'sweet spot' between Portapro's and KPH30i's, and they were right! These are currently my favorite headphones, even more than my less-than-budget-friendly Sennheiser HD599's (see below). The KPH40's are my Goldilocks Headphones. The KPH40's sound profile are a LITTLE more V-shape than the Portapro's and the KPH30i's. A little more bass than the KPH30i's and a little more high's than the Portapro's. Perfect. The bass is just right, and very accurate. The mids are there, but not overpowering. The high's are clear but still have that 'soft', 'easy-listening' sound I enjoy from the Koss drivers. Honestly I don't think a lot of people will hear a difference between the 3 Koss headphones I tried, its very subtle. They all have the same basic sound. But the differences were enough for me to recommend the KPH40's over the others.The koss headphones I tried aren't as clear and accurate as my HD599's but I enjoy listening to music on them more. It's just more laid back while still being clear and accurate enough. It has a pleasant 'cloudiness' to the whole sound image. I think some people call this 'veiled'. That's a good description. It's just not as harsh on the ears, I could listen to them all day without pain or fatigue. I put the YAXI pads I bought for my Portapro's on them and they fit fine. Super comfy. It didn't really need it because Koss learned from the KPH30i's mistake and made these earcups small. They sit right on the ear where it needs to and it doesnt hurt. The headband is also metal instead of plastic, so you can adjust it to exactly the clamping force and shape that you want. At first, I found the metal headband too skinny, it felt like it was cutting into my scalp. It wasn't, It just felt that way. So I actually took the silicone band I loved from the KPH30i's and taped it to the inside of the metal head band. LOL, I'm not fancy. I bet you could tape some rolled up paper towel to the inside and get a similarly comfy effect. This mimics the all day comfort I always got from my PX-100's. I think any future iteration's should still keep the metal band, but maybe include the silicone comfort band from the KPH30i's, don't touch the drivers or earcups, they are great. I LOVE the ribbon style cable that doesn't tangle. I don't really need the "utility series" connector, especially when the utlity cables cost $45, so if removing that makes these headphones $30 instead of $40, please do so and make these headphones an even more ridiculous bargain!SENNHEISER HD599https://www.amazon.com/Sennheiser-HD-599-Open-Headphone/dp/B01L1IICR2?ref_=ast_sto_dp&th=1-At $150, I almost didn't want to mention these as budget headphones, but for those looking to become Audiophiles, I think they are the cheapest Audiophile-quality option. Some recommend the Grado SR60's or SR80's, but I don't. They have zero bass, ear canal piercing highs, and are VERY uncomfortable to wear. The earcups are flat, high compression, and unyielding. I couldn't wear them for more than 3 minutes. The sound profile of those Grado's might be good for monitoring high's and mids, but not bass, so what's the point of them? Vocals and violins only? No thanks. The HD599's, on the other hand, have a very neutral profile with a SLIGHTLY elevated bass, perfect for monitoring, IMO. The bass is present, a little punchy, but not muddy or boomy at all. While the headphones were comfy on my ears, I found that it created weird air pressure differences in my ear canal. This became very fatiguing after an hour, even at the lowest possible volume to hear the music. Probably because of the bigger, more powerful drivers. I think they started to damage my ears. After a few weeks I couldnt wear them for more than 10 minutes without my ears hurting again. The only time any budget Koss driver did that was when I had the tunnel effect going on with the Grado Cushion Mod, and even then it was at a much lesser degree.---A NOTE ON AUDIOPHILIA...-But mostly I just recommend people don't become Audiophiles. It sucks.What a music-lover like me didn't understand was that Audiophiles don't listen to music, they monitor it. They don't absorb the entire composition, they nit-pick specific parts of it. This robs the listener of any enjoyment of the music. It kind of bother's me that they have stolen the title of "Audiophile". I think that belongs to music-lovers and music-makers. What we call "Audiophilia" should actually be called "Audiomonitoring". Calling it Audiophilia compels music-lovers like me to spend massive amounts of money on "better" headphones and audio setups to rob of us of any listening enjoyment we previously had with our $40 budget headphones, and rob our wallet while they are at it. I don't mean to insult or begrudge Audiophiles for a hobby they enjoy, I just don't like it when they are propped up as experts of the best sounding equipment. They aren't. They are experts for the best MONITORING equipment for sound engineers. If you enjoy music, I recommend you get a "consumer" headphone. I recommend you get the Koss KPH40.I like my KPH40's the best for listening to Music, TV, and Movies. Even over my Sennheiser HD599's. Its true that the HD599's have better clarity, but I enjoy music more with my KPH40's because I'm not hearing harshness or noises that the sound engineers never meant people to hear. Sometimes I felt like I was hearing TOO MUCH accuracy on the HD599's, like things the orchestra didn't want us to hear. I couldn't ENJOY my music because I was MONITORING it too much. I heard too much noise, not enough music. And I didn't have a CHOICE to enjoy the music, I HAD to monitor it. Audiophiles are nit-picky sound analysts, so take their hard-earned advice with that in mind.OK, A short message on Amp/DAC's. Don't bother.I have a Dragonfly Cobalt Amp/DAC. It costs $330. While it DOES make all my headphones sound better, it's practically negligable. MAYBE a 3-5% improvement in sound. Not really worth spending any kind of money on. The DAC on my computer is fine. Especially with the Koss budget headphones. It's recommended that you have an amp for heaphones that have an impedance of 50 ohms or higher. If its higher than 50 ohms you might want an amp just so the drivers are poperly driven, or it will sound real quiet. But test it first at full volume, you might not need it. If you do, there are Amp/DAC's in the $60 range that should do just fine. You definately don't need it with the KPH40's. So unless you can get it for free like I did (VERY nice friend), then I wouldn't bother with it.What about special cables? Not needed with the KPH40's alone. I had trouble with distortion running headphones from my amp using a cheap amazon 3.5mm extension cable, so I just got a USB extension cable instead and ran the headphones driectly from the amp. Problem solved. If your still having problems with distortion, there's guides online on how to make quality cables on the cheap. But you shouldn't need them. Please don't spend more than $20, the cost-to-sound improvement ratio is the worst here.OK, rant against the heaphone consumer industry over...and thank heaven for Koss!---So for normal people (99.9% of the population), I recommend you forget the expensive monitor stuff and get the KPH-40's for the $40. :DOther than the modifications I mentioned, you can also use the Kramer Mod to further fine tune the sound profile, but I don't think it's necessary with the KPH40's. Guides for the Kramer Mod can be found online.Here's the YAXI pads I used on the Portapro's and the KPH40'shttps://www.amazon.com/gp/product/B01MQVHX84/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&th=1Here's the Grado Pads I used on the KPH30i'shttps://www.amazon.com/gp/product/B00TGCDHL2/ref=ppx_yo_dt_b_asin_title_o04_s01?ie=UTF8&psc=1Here's some painters tape for the Portapro's. It doesn't leave residue if you change your mind later, and it matches the blue in the headphones nicely! :Dhttps://www.amazon.com/Duck-Painters-1-5-Inch-1-41-Inch-240194/dp/B0025KUSW8?ref_=ast_sto_dp&th=1A cheaper $7 3.5mm-to-lightning adapter so you don't have to buy the $45 one from Koss, (COUGH!)https://www.amazon.com/Apple-Lightning-Headphone-Jack-Adapter/dp/B01LXJFMGF?ref_=ast_sto_dpA popular budget Amp/DAC you don't need.https://www.amazon.com/Fosi-Audio-Headphone-Digital-Analog/dp/B07VDQQY95?ref_=ast_sto_dpIf you made it to the end, thanks for listening, and enjoy those heaphones!Koss makes a very good product. I still have my pair of Koss PRO4AA Titanium Studio Grade around-the-ear phones that I still use. Heavy little beasts that they are, but they are my heavy little beasts.Now, the Porta Pros are exactly what I wanted for walking. They fit comfortably on my ears providing very good sound, but not not blocking street noise so a vehicle cannot creep up on me. They are lightweight, and extremely comfortable. Even after 5 miles of walking, I did not feel any discomfort. These headphones are not expensive noise-cancelling, top of the line, nor are they designed to be. They are a affordable alternative to pricey phones that cover the ears and will sweat. The black foam on-ear cushions breath and can be removed and washed when needed. I strongly recommend buying a package of extra foam pads that are offered with these phones.As with any small listening device, handle with care. If you travel with them, fold them as directed and use the provided black bag. These will be my travel phones since I can not wear the hard-plastic in-the-ear ear buds. No ear canal ridge.I do recommend these lightweight on-the-ear foam cushioned head phones. A good product at a reasonable price. That's my story and I'm sticking to it!These PortaPro headphones sound incredible. Very satisfying in the lower midrange and upper bass. No piercing upper mids or highs or listening fatigue. The bass could be described as loose, but at least it is there, and does not leave you with the feeling of lacking like so many other on-ear headphones. The highs are plenty there, not muffled, however they are somewhat subdued.The PortaPro's are very comfortable to wear. The design does make them a bit finicky to put on because you have to adjust the headband open to your head size each time, but you soon learn the trick of quickly siding the headband open. But still this is an mildly annoying extra step that needs to be done compared with most other headphones. When not in use, I like to simply coil the cord around the tops of the ear-pieces. They stay put well this way, however can tend to get caught on the protruding metal part of the headband, which is a bit sharp and could eventually tear into the cord. For these reasons I considered getting the Koss KPH30i headphones, which have identical drivers but in a more modern design, however several reviews revealed the KPH30i to be uncomfortable, digging into the ears after a half-hour, I figure due to excessive clamping force. So although the PortaPro's are a bit weird by today's standards and have some potentially problematic sharp edges, they are very comfortable to wear. (Certainly nothing sharp contacting you head or ears.) The angle of the earpads can even be adjusted outward to 3 slightly different angles in order to lessen the clamping force. Yet they always snap back to the inward setting as soon as you remove them from your head. Fortunately I am usually perfectly fine with this default firmest setting, although sometimes I back it off by one click.The reason I purchased these headphones was to replace my beat up Audio-Technica ATH-P5 that are physically wearing out. Those also have a very pleasant lower midrange and upper bass. So if you like the Audio-Technical ATH-P5, you will probably like the PortaPro's as well.Previous to purchasing PortaPro's, I tried three other headphones, returning two. These included the Kensington Hi-Fi On-Ear Headphones with 9-Foot Cord (K33137), which was extremely lacking in the lower midrange and bass; and the Panasonic XBS RP-HT21, which was also quite lacking in the lower midrange and bass and was super hyped in the upper midrange leading to listening fatigue. The other pair of headphones I ordered (and kept) are the Yamaha RH1C. The Yamaha RH1C are by far the most neutral sounding of all headphones I have mentioned, with a nice flat and even frequency response. However, the bass and lower midrange, are still not as present as I prefer. Now don't get me wrong. I am not a bass-head. Yet the lower midrange is where a lot of the magic happens. Now that I have the Koss PortaPro's, I am not finding myself using the Yamaha RH1C. That said, the Koss PortaPro's cannot be described as neutral or flat. The lower frequencies of the PortaPro's can be a bit too much on some sources.The Koss PortaPro's are incredibly satisfying for monitoring my electric guitar sound through my Amp Modeler. They sound absolutely amazing on clean sounds with single-coil guitar pickups. And high distortion models with humbuckers sound very satisfying as well. That said, I suppose some people might prefer a bit less lower-mids and a bit more upper-mids for distorted amp sounds. But the PortaPro's do not cause listening fatigue, and my ears are not ringing afterward from any excessive upper midrange frequencies, which was quite a problem with the Panasonic XBS RP-HT21. The Koss PortaPro's just keep sounding good and make me happy playing for hours.I have also been using these plugged into my laptop to listen to YouTube videos, podcasts, and the like. For spoken word, I had been expecting to like the Yamaha RH1C. However I much prefer the Koss PortaPro's for that as well. They are just plain more pleasant to listen to due to the full lower-mids and relaxed upper-mids and somewhat subdued highs...., die perfekten Kopfhörer.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...Ich kann zu diesem Kopfhörer eigentlich nur folgendes sagen:Positiv:- Toller, definierter Klang.- Klassisches Design.- Guter Tragekomfort.- Sehr leicht.- Gutes Preis-/LeistungsverhältnisNegativ:- 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.I’m on my 3rd set of porta pro now. They sound good but they seriously are the weakest constructed headphones you will ever use. They snap at the band. The jack plug is weak Af, gives out and needs twisting a certain way to receive sound from both ears.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.Premetto che per poco più di trenta euro non mi aspettavo un miracolo, però...Leggendo le recensioni spesso ci si azzecca, altre volte si è tratti in inganno dalla quantità dei feedback che potrebbe essere indirizzata da una base di utilizzatori non esperta.Poco da dire su queste cuffie: sono economiche, in tutto, incluso il suono che è, a mio avviso, il punto di distanza più elevato fra quello che è il feeling generale che traspare dalle recensioni e quello che è poi la reale capacità tecnica del mezzo di esprimere un valore.Sono un professionista, e ho circa 15 cuffie in studio su cui baso spesso il controllo dei miei mix.Non faccio l'elenco, ma ho un range di cuffie che vanno da cento a mille euro.Alcune vengono e vanno, altre restano.Queste Koss hanno impiegato circe un'ora a rientrare nella scatola e avviare il reso, e no: non dipende dal rodaggio, non c'entra nulla la questione 'lasciale suonare un po che migliorano' etc. Qui siamo di fronte a un giocattolo.Basta una Grado modello base, la 60 per intenderci, per distruggere, certo a un prezzo più alto, queste plasticosissime cuffiette che molto, se non tutto, giocano sull'effetto nostalgia stile 80's.Il punto debole sono i bassi, e in generale tutta la gamma medio/bassa, che risulta incomprensibilmente rigonfia di cose che non esistono nella musica che si sta ascoltando, e che forse a qualcuno piace ma che di certo non può far sopravvivere queste cuffia nella collezione di chi sa come suona il brano e, con lui, le altre cuffie in circolazione.Mera illusione il fatto di poterle anche lontanamente considerare adatte ad un impiego professionale.Chi vi dice il contrario, molto probabilmente, non vive di musica prodotta ma gioca a fare l'influencer.Fragili, si rompono solo a guardarle, non mi sentirei di farle nemmeno scendere dalla scrivania, quindi per molti inutilizzabili.Credo che a parte il design nostalgia, che potrebbe piacere a qualcuno, non valgano nemmeno la metà del prezzo proposto.Guardate altrove, di alternative ce ne sono quante ne volete.Wow, what a fantastic little headphone.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 eBayBoth of these have excellent sound and actually sound very similar to the Koss Porta Pro funnily enough.UPDATE : These sound even better after 6 hours burn in. They'e become clearer in the mids. The bass is really awesome and keeps surprising me how good it is. It's light but very punchy and airy.