Sennheiser HD 660S2 - Audiophile Open-Back Over Ear Headphones Wired with Deep Bass Extension and Refined Acoustic Performance for PC, Music, Gaming, Podcasts, Premium Black

build quality: good. decent quality plastics, metal headband, no squeaks, creaks or rattles. cables are thick with good stress relief. replacement pads are easily available too. comfort: great. decent pads and headband padding. pretty lightweight for a full sized overear. i wear them for hours at a time with no issues sound: typical sennheiser 600 series sound, but now with more bass, more bass extension (compared to the og 600s. still not for bassheads). The same excellent mids you'd expect from a 600 series headphone. highs are decently detailed and not harsh. soundstage is good, positioning is also good. Zero isolation (its an open back headphone, so thats the expectation). Comes with various cables, including a 4.4mm balanced plug, so you can connect them to just about any source with a socket on it. Should be able to drive them off of just about anything, but i'd still recommend an amp/dac of some kind.

Review (★★★★★): Bought for £399.00 on Amazon UK (price at the time of writing). The HD 660S2 delivers a genuinely “audiophile” presentation: wide, natural soundstage, excellent vocal clarity and detail, plus noticeably deeper/cleaner sub-bass than many open-backs in this class. They’re also extremely comfortable for long sessions — light on the head, breathable velour pads, and no “hot ears” feeling. Pros: • Spacious, natural open-back sound with great detail and imaging • Stronger low-end/sub-bass presence without muddying the mids • Very comfortable for hours (lightweight, breathable pads) • Quality build and detachable cables/adapters included Cons: • Open-back = no isolation (sound leaks both ways) • 300Ω — needs a decent DAC/amp to sound its best • Premium price If you listen alone and want a reference-leaning, enjoyable open-back headphone for music and gaming, this is a superb choice.

Warning.... Don't judge them on first listen Run them in for a good 10-20 before Bucks Fizz Eurovision Winner Oooops, silly me, I mean, before making your mind up Initially they sound nice, but not 500 pound nice depending on what you pay for them Do not pay more than £500 though as with Amazon the price varies I got them for 464 but then the price dropped to 419.... I asked Amazon to refund the difference They wouldn't, but I could return them and reorder for the price I went to re order and suddenly the price was £500 Such shady dealings with Amazon, really shady Anyway....to the headphones After running in, they really are lovely sounding\ Not overloaded with Bass like a lot of these Beats headphones, which are completely overpriced because of the name The Bass is true, as in you actually hear the texture of a bass line rather than just some bass "noise" Instrument separation is very, very good The top end is what I would describe as smooth rather than overly detailed I mean, I getting on a bit, despite being 8-12 years old in the mind I'm actually middle aged..... what's middle aged you say? I dunno these daze I'd say 39-55 So as of the time of writing I'm somewhere in between that My hearing.. I can barely hear a 14khz tone now, so bear bare (how do you spell that?) in mind But it's probably better than most chaps my age, because once you past 30, the fact is you really do start to lose the top end of your hearing whether you like it or not Right, to the top end They tail off quicker than my Monito Audio Gold speakers But sound a tad smoother So ultimate detail might not be there if your ears need a bit of extra treble But they fit nice and are very comfy for long sessions, of listening that is 😊 You really have to wear them in a reasonably silent room though, as being open backed you will hear outside noises So if you're thinking of having these on whilst sitting next to the wife/husband/man friend/girlfriend/thing friend/in between friend I'd advise against getting them as they really do leak sound rather loudly I've had them a few months now, so I velvet, oops, I mean felt I could write a reasonable review Although reasonable I'm usually not Goodbye for now PS Also it asked me to give a star rating on "Sheerness" Seriously WTF is that all about I mean, is that a joke or you really want me to judge a headphone in relation to a place in Kent? Just nonsense, and I know nonsense when I see it

I'm not a sound engineer, DJ, producer or massive audiophile but I wanted to see how good the "best consumer grade audio" would really be. In summary they are pretty impressive overall and after a month or so of using them daily I would say they're worth it if you don't mind the high price tag. I've used some variation of Sennheiser gaming headsets for 10+ years, from the HD560, HD595, PC350, Game Zero, recently the PC350 SE. They all last me a few years each and have been decent sound quality, especially the open back versions. The sound is definitely a cut above all of those headsets. When a video, movie or game used 3d audio, the "sound staging" or however you describe this is in a different class. For example live music is as immersive as I imagine it can be. Instruments seem to stand more on their own, you can pick out layers of the track easier. Due to this and the wider frequency coverage, you even hear some notes, sub bass or parts of songs that you couldn't hear before. For audio I can't deny they are fantastic and they have made me a bit of a sound snob because all my other headphones/earphones/airpods sound even more crap in comparison! I think the price is just a bit too steep for what they are and should at least include a built in mic for self monitoring. They are a more robust metal headband design than the lower models but that's about it, the build quality is better but they are no more comfortable, uses the same ear pad cups and design etc. Lastly the cable is pretty crap, and is one of the first things I upgraded. It comes with a heavy, chunky 1.5m cable that goes into a 6.5mm jack. You can get much better third party ones for around £15 up to 3 meters but you really shouldn't have to... I think around the 400 mark would be more fair for these. If you are already using something high end I doubt it's worth upgrading to these, but going from low to mid range they will still blow your ears away still after a month, so it's not just novelty or placebo.

Very comfortable headphones. They fit completely over your ears without pressing against them so there's no pressure on your ears so you don't end up with the hot and a bit painful. As for the build quality, as you can imagine for that price, they're very well built. I've had them make before. I've heard it said that the base wasn't too good on them, but I found it more than adequate. They are very well made. Got a nice bright sound to them without sounding tinny the cable has a sturdy connection and a nice thickness. The whole set screams quality. More than happy with them. If you can afford them I'd give them the thumbs up

I bought the HD 660S2 on recommendation, with a 30 day return guarantee from Amazon. So if iI was not happy with them I could easily return them. They do indeed sound good, though no better than my 5+ year old Grado SR125 headphones, which they were replacing. As a very careful and only user of these headphones I was disappointed to discover that the headphone cable had fractured after only 7 months of use (at one of the joints, probably the weakest part of any cable). I compare these to my numerous pairs of Grado SR60/SR125 headphones each of which have lasted 5 +years, sound equally as good, and with careful don't suffer from fractured cables. Sennheiser say the cable is a CONSUMABLE part and thus not covered by any warranty. I have to buy a replacement cable (even though the product is in warranty).. So they expect every user to buy replacement cables every 7 months because they manufacture non-durable cables. I wouldn't use another pair of these headphones even if they were free. I would rather buy another pair of much less expensive and considerably more reliable Grado headphones. (Grado actually include the cable in their warranty)

Got HD660S2 when it price dropped to around 400 euro. I already have HD600 so I can compare them side by side on Magni/Modi stack and new FOSI ZH3 I got for those sennheisers (I gave HD600 and Modi/Magni stack to my wife). Build Quality: same sturdy buid like HD600. I expect pads to wear similarly (2 years to replace). HD600 still going strong after 8 years...I expect same here. Fit and size: similar. Bit tight clamp force but you can stretch them by grabbing metal band only same as HD600. Same fit as 600(perfect). Amplification requirements: High. Those are 300Ohm...bit better sensitivity than HD600 (Means less juice for same volume) but you still need at least 2V RMS amp. Sound quality: Wider soundstage and more impact on sound...definitely more engaging than HD600. There is much more bass and mid bass but it's not overwhelming... making sound fuller and more forward. Highs and detail are same or better than HD600 on both devices (Magni and FOSI). Overall its sound is more...full and you feel like you don't use low end details or soundstage. Swapping between HD600 and HD660S2 (volume matched) seems like you get more sound in HD660S2. Now there is obe thing that HD600 are kings and that is timbre in mids...but HD660S2 are so close to them and you gain so much across the board is not even close. Now...for 400 euro yes...worth it. For more? Questionable upgrade vs HD600. If you don't have any of the HD6XX series...those are pretty much end game for most. Make sure its plugged to proper amp tough.

I've added the 660s2 to my arsenal of headphones and IEMs as I have missed owning a full size open back headphone for several years. Although this is a 300ohm headphone, the high sensitivity means that you don't need a super powerful amp to get them very loud, bearing in mind that loud does not necessarily mean adequately powered though. Just out of interest I first tried them with my A306 Sony Walkman (UK version with the volume cap) and my Xperia 1iii phone using their headphone sockets, I expected them to be pretty quiet at max volume, instead both got the headphones plenty loud at about 75% volume, I was shocked, I have an IEM that needs to be played at a higher volume setting, they sounded very enjoyable. I then tried them balanced with an IFI Go Bar DAC/amp, that sounded even better, more energetic, better bass definition, notes more incisive. Same performance using the IFI Go Blu. The overall sound is full bodied, neutral-warm and engaging. Bass is great, not just for an open headphone but in general. The sound works with every genre I tried from trad music from across Asia to experimental electronic to jazz. I think if you found these to be bass light you've probably been listening to wireless headphones with the bass boosted for too long. They feel robust, very comfortable, I have a biggish head and found the clamp force to be fine. Cable is a length suited to use at a desk, feels very durable but I may have a shorter, lighter cable made for use with portable devices at home. I'm very pleased with the 660s2.

J’en ai eu des casques, de toutes marques, de toutes technologies, mais je penses avoir enfin trouvé le Graal ! Alors attention, mon avis est bien évidemment subjectif et dépend entièrement de ma configuration matériel ! Utilisé principalement sur mon ampli (Yamaha A-S1100) pour l’écoute de vinyles (Pro-ject PRO avec cellule 2M Black et preamp à lampes). J’avais craqué jusqu’à présent sur un Grado SR325X qui est vraiment excellent mais pas des plus confortables, le HD660S2 me faisait de l’œil depuis longtemps.. malgré certains commentaires qui laissent entendre un manque de basses, c’était justement l’un de mes objectifs, car depuis l’acquisition du preamp à lampes ces dernières étaient devenues un peu trop “brouillonnes” et je cherchais à les maîtriser au delà de ce que le Grado permet. Et la.. le mariage parfait !! Le Sennheiser m’apporte un équilibre vraiment parfait (encore une fois d’après mon matériel). J’obtiens des basses suffisent puissantes et d’une précisions folle ! Les médium sont également légèrement relevés ce qui lève un certain “voile” présent sur les voix et les aiguës sont cristallins ! Peut-être un peu trop présent au déballage mais au bout de quelques heures de lecture, ceux-ci s’apaisent pour devenir juste excellent ! Je suis vraiment ravi de mon achat !

Ci ho ragionato un attimo prima di acquistare queste cuffie per il semplice fatto che avevo le 660S. Però essendo carenti nelle frequenze basse ho optato nel venderle e prendere la nuova versione 660S2. Inoltre non lavoro nell’ambito audio e non ho la necessità oggettiva di averle, ma le uso solo per ascoltare la musica. Ebbene, sì queste 660S2 sono superiori alle 660S, anche se il suono è molto similare nelle due, le 660S2 hanno un suono più nitido e corposo ed infatti hanno quella gamma nei bassi che mancano nelle 660S, senza però essere mai invasivi. Il cosiddetto impulso nelle frequenze basse c’è ed è più presente rispetto alle 660S. Le ho da più di un mese e con il rodaggio il suono è migliorato. Le 660S le avevo invece da poco più di un anno. Una cosa molto importante che devo dire è che nonostante i 300 ohm di impedenza, sono molto facili da pilotare, pensate che con il mio PC HP Spectre con scheda audio B&O, già con il volume al 40% il suono è sufficientemente elevato per produrre danni all’udito se usato con costanza. Mentre con la prima versione 660S che hanno un’impedenza di 150 ohm con il volume al 30% si ottiene la stessa intensità sonora. Questo vuol dire che nonostante l’impedenza sia stata raddoppiata, in realtà l’induttanza e la sensibilità delle nuove 660S2 è maggiore, in proporzione all’impedenza. In conclusione, queste 660S2 sono la correzione delle 660S, infatti non ascoltavo spesso la musica con le 660S perché semplicemente la gamma bassa di frequenze era insufficiente in termini di volume. Inoltre, il suono delle 660S2 è più nitido e corposo. Rispetto alle frequenze alte è molto difficile notare la differenza, però le frequenze alte sono state migliorate nelle nuove 660S2, dopo aver confrontato diversi brani ed ascolti ho potuto costatare che c’è stato un miglioramento nelle frequenze alte. Faccio presente che con il volume intorno al 60% entrambe le cuffie mi iniziano a far male all’udito a causa dell’elevato volume, pur essendo il suono perfettamente nitido. Non entrano mai in distorsione nemmeno al 100% del volume. Rispetto alla confezione però, le nuove 660S2 non hanno una custodia rigida come le 660S, e lo scatolo della confezione è grande la metà, inoltre i cavi in dotazione sono lunghi la metà rispetto a quelli che vengono con le 660S. La qualità costruttiva delle cuffie è fenomenale, però il risparmio che ha fatto Sennheiser con la sola confezione è considerevole. Le nuove 660S2 sono confezionate come lo sarebbero cuffie da 30€, pur mantenendo certo la massima pulizia dentro la confezione. All’interno c’è anche un certificato di qualità. Devo dire però una cosa molto importante per chi è interessato ad ascoltare semplicemente la musica, e non è un professionista del settore audio: queste cuffie sono eccessive per il semplice ascolto della musica e non si giustifica il loro utilizzo non essendoci differenze importanti se l’unica cosa che si vuole fare è ascoltare la musica con il PC. Sono aperte, il suono è sì migliore anche in termini di qualità dei driver, ma se non si hanno molte pretese, spendendo un terzo del valore economico, ci si ascolta la musica con perfetta tranquillità e addirittura con la possibilità di avere un ascolto più caldo in caso di cuffie chiuse. Inoltre le 660S2 stringono molto, ancora di più rispetto alle 660S. Ho una vasta varietà di cuffie cablate, wireless, sia di tipo circumaurali che in ear. Quelle di più alto livello, quindi le migliori (e anche le più costose) sono queste 660S2. Inoltre, oltre alle cuffie ho un paio di impianti audio di alta qualità (B&O e Bose), che mi aiutano a conoscere le sfumature sonore. Non nego che la migliore qualità audio che posso ottenere è con queste 660S2. Avrei molte cose da dire su queste 660S2 e vi dico la più importante: costano tanto, pensateci un po’ e confrontatele a livello economico con altri prodotti, perché no, ad esempio con il costo di un grande elettrodomestico, o banalmente di un PC od uno smartphone. Per cui consiglio da subito a coloro che non hanno tanti soldi da sprecare, ma che semplicemente vogliono ascoltare la musica, di non buttarvi su queste cuffie perché la differenza obiettiva tra queste cuffie rispetto a ad altre cuffie di marca e qualità che però costano 3 volte meno, è trascurabile se ciò che si fa è ascoltare la musica per svago con il PC. Io queste cuffie le terrò volentieri. Non le restituirò e mai mi sono permesso di restituire un prodotto acquistato con Amazon che fino adesso mi ha sempre dato prodotti nuovi di zecca, con una spedizione formidabile.

Très bon casque

سماعه الصوتيات فيها نظيفة لكن لازم معك amp قوي او مكسر يدعم و لها ضمان سنتين ممتازه مره

買ってからちょうど1年経ちました 1日の内12時間は付けていて、ゲーム、音楽、仕事全部こいつでやってきた感想 まず音 音域広いです、音の解像度も高いです、どの音域もちゃんとなります。 ただ一つ無理やり欠点を付けるなら特徴がないです それすなわち勝手な味付けをしないで音源に対してちゃんとした音がなっていることの証明だと思います。 でもこれだけはいいたいです、結局自分の好きな音がなるイヤホンだのヘッドホン等を選べばいいのです。 次に軽さ これはこのレベルの音を出すものでこの軽さのものはなかなかないと思います。 というかこいつを1日12時間以上付けて作業したりゲームしたりできてるのもここにあってここが最大の強みだと思います。 次にサポート ゼンハイザーは一般消費者向けのヘッドホン・イヤホン・ヒアラブル製品部門を、スイスの補聴器大手 Sonova（ソノヴァ） に売却しているので MOMENTUM HD 600 / 650 / 800 S 系 ACCENTUM IEシリーズ 等の サポートはゼンハイザーじゃないです。 そこで元々ゼンハイザーのサポート体制なのか、はたまたソノヴァのサポート体制なのかわからないけど あんまり良くないです。 これは結構痛いです、基本有償修理 これだけ目をつぶればまあ物自体は本当に良いしイヤーパッドやヘッドパッドの部分も互換品がたくさんあるので良いと思います。 パソコンからFiiO K11を通してバランスケーブルで使ってます。 現場からは以上です