Sennheiser HD 660 S Over Ear Open Headphones

Read full InnerFidelity review here: www.innerfidelity.com/content...

[@kongmw]

*holding on to my 650s for dear life*

[@paulewannacrackr]

I love how emotional Tyll gets in this review - really exemplifies his passion for headphones.

[@shameite74]

And this is why I ALWAYS take Tyll's reviews heavily into consideration when looking for another headphone for a purpose! Honesty is a virtue that a lot of people are starting to lack as years go on but this man still has it! Thanks Tyll for all that you do and for your honesty!

[@user-9sidfgsxgj]

Wow, this was heart-wrenching. :(

[@turbomustang84]

Your passion really comes across in your videos

[@cryptout]

Hmm I was waiting for a black Friday sale to replace my over 20 years old 600’s but you make me doubt now. Excellent review!

[@frankjaegervandlarssen6657]

You are one of the very few that accurately points out sound characteristics as well as strong and weak points of headphones. When testing out different headphones based on your recommendations I´m pleasantly surprised about just how accurate your reviews are. Thanks a lot!

[@aayushmaanlala]

huge fan... loved your role in the hangover

[@NM-jn6cp]

Subscribed. Thank you for your thorough and honest opinions!

[@Life-Is-A-Curse]

i was waiting for your review, thank you very much for this review. i own a hd650 and was thinking upgrading to hd660s, but after this review, i don't need to upgrade.

[@shadowslipping]

I'm feeling better about not returning my 650HD & "upgrading" to the 660S. I've had my 650HD for a month & love them, but my curiosity had me wondering if the 660S was superior bc of the latest changes made to the headphones. I'll sit tight for now & enjoy my 650HD. Thanks for the honest & informative review👍🏼👍🏼

[@bernamej]

The sincerity and dedication of Tyll’s video forces great respect.

[@MCOChuck]

Fantastic review! Please keep up the good work!

[@midorihibiki]

So sad that's Tyll was not in headphone community anymore. I really miss him. His knowledge and honest opinions when reviewing headphones.

[@buonassi]

I applaud Tyll here for staying true to his ears. He's become somewhat of the black sheep in the headphone community lately, but I think we need those differing opinions that give a point of view that isn't part of the "hype train". It's important to be critical in these matters and is very helpful hearing some possible downsides with this set of cans. As was the case for the Sony Z1R, time will tell if the 660s captures the hearts of the masses.

[@tormaid42]

Vince Buonassi I’ve seen very few people praising the 660s as better than the older models, so I think he’s in the majority on this one at least.

[@genesis667]

Out of all the headphones I've owned and I've owned a lot costing upwards of $3k a pair, the Z1R still is my all time favorite...Sound is completely subjective...

[@user-xg6zz8qs3q]

Yeah, I have been hurt by this so-called "hype-train". Specifically, with brands like Superlux and KZ that make very bright and fatiguing headphones that don't do it for me. It seems like brighter sounding headphones with boosted bass get way more hype than darker, smoother headphones

[@MarceloTezza]

Well, because darker is worse you keep going up in volume to never get satisfied.

[@JamesWilliams-gf8gm]

yes true but I don't agree with him most of the time. I bought the Focal Elear based on his review and they are the worst headphone i have ever heard! they have a 25 db suck out I can't stand them

[@jerrygeorgopolis8015]

Thank you for the review. Season's Greetings to you and yours.

[@johanramstrom4787]

Would be interesting to hear a review over the HD58x

[@alexdre]

I just gained a lot of respect for Tyll to be able to call out a company like Sennheiser.

[@cnnlive10]

As a HD 600 owner, I waited on the HD660s because of so many negative reviews. After I received my "refurb pair" this week, I can tell you I don't know what these guys are hearing. The HD660s is absolutely great. I feel like i've been cheating out of years of possible enjoyment...

[@Lucaplayshorts]

Yeh the 660s are great no question. Just love these things

[@carlozzz3300]

The people calling these dull might have hearing loss tbh bc to me they sound fine and instead I dont like headphones w a treble boost

[@zeeMuniStacksBundles]

I'm so glad i saw your video Tyl, I'm going to try out the ones I bought, but probably return them and get to the hd600

[@SamCampbell]

Love the honesty. Thanks Tyll

[@christiang-berg8490]

Great review as always!

[@shigityshigityshwa]

I have both the 650 and 660S. After listening to the 660S for some time and switching to the 650 it feels like something is missing. Everything sounds dull and lifeless after listening. To me to FR sounds about the same between the two, with the 660S being slightly more crisp and impactful because of the faster driver. I personally like them better than the 650.

[@lumntoob999]

Gandalf the Grey sounds like you have more sense than sentiment, very refreshing in this comment board. I'm buying the next pair I find on the second hand market.

[@user-23590]

@Agnar150 Agnar Just go to head-fi, you will like the echo chamber there.

[@mpamphsphoenix4402]

Exactly what u said .

[@kevinmorrice]

so true, the 660s has so much more clarity and gives such a clean sound, i run mine through a tube amp to add a little more to the sound and they are a fucking masterpiece

[@georgipartsalev6193]

A tear just fell from my eye. :'( Be strong Tyll, together we can make it through!

[@stevek5748]

Yay great review! Please review the new mayflower arc dac/amp for $200 it directly competes with the Schiit stack

[@antoinep9733]

My HD-6XXs have been getting more and more comfortable using other people’s methods to ease the clamping pressure, but it wasn’t until I bent the headband like Tyll shows at the 2 minute mark (was convinced the plastic would crack 😬) that I achieved nirvana. Thanks Tyll, and enjoy that retirement.

[@gabriel-dan4098]

I've owned the 650 for over 10 years now and recently joined the Massdrop 6xx drop just to make sure I will enjoy the beautiful 650 sound for years to come.

[@Ziyoblader]

I have gone through 5 pars of 650s in 2 years love the sound !!!! BUT all the same crap breaking down base goes out in one ear and vol as well then send back for repair then get brand new ones only to have it happen again in 3 months never had this happen to my 598s

[@hopps4117]

Thanks for the review, always look forward to them! I really hope they don't discontinue the 600 or 650.

[@akorus_master]

Yay ! Inproved earpads for my HD600 !

[@OG10]

Great review, the HD600 was my gateway headphone they last so long.

[@JosiasRivera]

Is there a Difference between the hd600 and massdrops 6xx?

[@bluemonkeyster]

Thanks for the review! I always respect your opinion. The true test of the headphone should be a hands-on or rather ears-on at a headphone store that can provide a demo.

[@viol999]

Thanks very much for this review...as always I just took your advice an ordered the HD 6xx from massdrop for $199.00.

[@leary3061]

Geez! I'm not sure I've ever watched a YT video and actually "felt" the disappointment like this before, even as he was struggling to recommend it.

[@CaveyMoth]

It was so sad, watching him try to justify this headphone over the HD 650... ='/

[@SLI1337]

Speaking as someone who owns both the HD650 and HD660S, I can easily recommend taking this review with a grain of salt. I respect Tyll's opinions on the HD660S, but I found the new sound signature to be a welcome change and a great overall improvement. Also - Sennheiser isn't discontinuing the HD650 anytime soon.

[@dtz1000]

SLI1337 He was right about the hd700 and many are saying this uses a similar driver to that one.

[@pratipsengupta7953]

Thank heavens I just saw this as I was rushing out to grab a pair. I have rescued my 650 from the bin. For all the noise below, the distilled fact for me is that if there is a difference between 650 and 660s, it is so small that an 'upgrade' from 650 doesn't live here.

[@permanentlydisappointed6594]

I've had my old 600 for almost 20 years and they finally broke beyond repair (not the can's fault, it was me being overly stupid). I chose them BECAUSE of their smoothness and now I have to buy new ones. I'm already anxious abouw the "new" version of the HD600 and if it's REALLY E X A C T L Y the same as the old ones while having a peek at the 660S. Back then I chose the 600 over the 650 on purpose. I haven't listened to them yet but I just hope I can get "my" sound back.

[@alexandrutrutiu8780]

Thank you for your sincere review! I own HD600 with the aftermarket cable Russ Andrews HC-1 and I’m very pleased by the sound. I wish to ask you what headphone tube amplifier you recommend for HD600?

[@6tautstrings]

Wow! What a ballsy review?! Well done that man for being (so) honest. If he were a lesser know reviewer, he would now be looking for alternative employment. I am sure the equipment used in his reviews is (probably) more revealing than what we might use with the same headphones, ergo; he can find more of what he's looking for. A damning review just before Christmas too, does this mean I need to stretch for the HD800 S?

[@1ceCold037]

Thought he was going to start crying.

[@MrStingraybernard]

me also

[@redrich2000]

He was crying on the inside

[@youtert]

And don't you cry-y-y tonight, there's a headphone above you baby

[@vitorpassosnicolodi9108]

I never saw him like this

[@thegreatsiberianitch]

11:49

[@ama-tu-an-ki]

thanks for keeping on telling it like it is!

[@DerHeimatlose1]

It's a very very bad sign when Santa almost starts crying before Christmas.....

[@CaveyMoth]

Sennheiser has been naughty...again.

[@soumyomondal4368]

Lol

[@alexalmazorino94]

ohhh thanks for the review, I guess I'll stik to the 650.

[@rickey6098]

Thankyou for being honest with this review. I agree with the cable length, too long for portable use anyway.

[@turbomustang84]

Holy shit I'm so glad I bought a HD-6XX maybe I will get another to add to my collection including my just ordered HD-58X Jubilee

[@ViaRosalesVlogs]

didnt knew old luke skywalker are reviewing headphones now. lol! love your craft tyll!

[@afifrobbani4492]

Love the rants here, good video review too.. i will stick to hd 650 then..

[@NWinnVR]

I would have been super interested in hearing what he had to say about the 58X.

[@shameite74]

Tyll, has your opinion changed in any aspect on these cans since reviewing? You are the only KZbin review I have seen that did not think these we superior over the 600 and 650. I have always valued your reviews and that is why I am asking if you have any review changes on these. In my opinion you are always spot on. Thanks in advance for the reply!

[@MorriganJade]

I think this headphone would be suited for my applications. I don't use the HD 558 as a portable solution, but do love having it at my desk, without AMP or DAC (since I don't hear any problem that I'm considering getting one). I'm also on a tight budget and will probably be left without being able to get proper AMP/DACs with proper headphones in a very long time. This headphone however makes it (probably) possible for me to use it behind my PC without any other device required that would cost me extra. Maybe if I'm getting older and get a proper income I might actually be able to jump into the "personal end-game". But this headphone, for me, sounds like a perfect "access to high end, at a lower cost for people with a tighter budget". Yes, the headphone might be "expensive", but I won't be needing anything else for some time, yet still have a great sound (though lacking in some aspects compared to the older family members).

[@alexp3577]

Can you review massdrop focal elex and compare those to hd6xx, focal elear and focal clear?

[@muttyhc]

Hi, good review, which headphone would you recommend for a first audiophile experience? I will be using a usb-c dac with my phone. My options are 660s, x2hr, momentum 2.0 wired, shp9500 anything below £250 really. Thanks.

[@GraDesigns]

6:07 - About the Sound Quality

[@damauri]

Waiting for Hifiman's Sundara.... I really want those to be good so they can be my next purchase.

[@jurumal]

Wow. I was not expecting that. Let’s take a moment of silence for The Legend.

[@JamesWilliams-gf8gm]

hmm, I wonder how much the new pads (not worn in) of the HD660s effected your impression. I would be worth changing the pads with the worn HD650s and see what happens

[@iliketoreadiliketothink1763]

I really want to try these. But for $100 more, I really have my eye on the LCD 2 classic

[@stanpiper8158]

Thank you for your honest opinion.

[@hautdoge141]

Damn, now I'm just glad I have my HD650s. I hope I don't break them, tempted to buy another reserve pair. They are my fav can hands-down.

[@MykWazowski]

Can the balanced cable be purchased on Sennheisers website? I'd love to get them for my HD600's.

[@tj-yb1pc]

Love the straight honesty t y For that, iam listening to you and getting the hd 600s and you hot e new sub right here

[@brf1009]

I never saw him so disappointed.

[@fatdoi003]

he's seeing the death struggle of once an innovative brand sitting idle for too long and 2 successive failures (700 & 660)

[@Arcanineisthebest]

He was probably really looking forward to them... So sad.

[@fatdoi003]

High Hopes - Pink Floyd

[@johnyang799]

Benjamin Reyes I have compared all headphones around that range and hd600 650. 660s is really good sounds pretty accurate slightly warm tilt.

[@dimonius]

brf 100 p

[@robertnoblitt518]

Thanks for your honest report.

[@Andrew_Malee_Vlog]

Good honest review.

[@ericleckey]

Thanks for that, love ya brother!

[@alessandrabenz8109]

love it, miss you

[@nemesislucifer7114]

I wonder if the hd650/600 driver capsules can be popped into a hd660s to make a better looking(imo) hd650/600.

[@mfmishere]

Hello Tyll, What are your thoughts, if any, on the Massdrop HD 58X Jubulee that was released today? Thanks.

[@ldlduvall]

This is my kind of review!!!!!

[@pentapandamusic]

Only I got the sense of humor here? Great video that made me laugh and thanks your thoughts on these headphones, I might go for the 650.

[@markp4044]

I'm happy I waited on your review before buying. I'll stick with my hd600.

[@Supperconductor]

Mark P Ditto here. It seems one has to spend quite a bit to hear a worthwhile upgrade from the HD600. This has kept on the fence for a decade. Oh well, I guess this is a good problem to have.

[@HenryTheBoilermaker3rdYear]

Mark P what about Z review?

[@fontanamarcos]

But, in my case I'm planning to buy a HD6xx. What do you think? Would I buy one HD600 or HD660s?

[@ambidex0med]

Nothing beats the HD600.

[@dicktrickle5352]

660s sound better.....imo

[@user-jm7ch7vl3x]

You look like a typical resident of the far north, a Siberian. Great review!

[@johnj9976]

Алексей Замараев You're RU guy but know a lot about USA, did you live there? Do you prefer that I live there?

[@user-jm7ch7vl3x]

In Siberia, I do not advise) otherwise we will have to do a review of this ..... www.livemaster.ru/item/13066093-aksessuary-mehovye-naushniki-iz-norki

[@paritosh_arahat]

Will lg v40 ibe able to power the sennheiser 660s (150 ohms) And will I be able to listen them with good volume?

[@pianistor555]

For people that are still wondering about what Tyll's taking about, he is right to some extent. So, the 600 and 650 are indeed smoother sounding headphones because of the drivers, but it's not that the 660S is a grainy headphone, it's just that it's not a forgiving headphone. In my experience I love the 660S because of how detailed and wider they are in comparison (even tho the treble isn't as extended as it should be) but the fact is, I feel exhausted after a while of using the headphone because they have too much detail and texture, it's not grain, just giving you all the flaws there are in the recording. While the 600 and 650 can be heard for hours without issues, losing the detail the 660S has. It's your choice, both are great headphones.

[@lexus2k3]

finally! been waiting for this to find out what's the difference between the HD 650, great to hear the honesty in the review..thanks Tyll

[@Fuckoffgoogle25]

Out of a iDSD micro, I feel the biggest flaw of my HD600 is that it is too smooth. Maybe this is ameliorated by higher end gear, but from low to mid gear it seems the HD660s might be better.

[@AY-dw4om]

I still don't know which is better: the good old HD580 that just dies on me after 25 years of use (since 1993 I have them) or the Philips fidelio X2 I am very close on ordering from amazon for a very very good price. If Tyll can clarify which he would get today, HD600 or fidelio X2 - I would very much appreciate. thanks in advance.

[@java2894]

Which is the best sounding out of all three ?

[@pandoraefretum]

Did you run them in ? Mine sound very fatigue free and neutral...

[@SteveHartmanVideos]

could the grain and harsher sounds that you speak of around 9:00 sound better if you burn it in for 100 hours?

[@TheKlimekpl]

The headphone technology still doesn't advance when do we get the Sennheiser Orpheus sound for the price of this 660 S ?

[@thebludragon8353]

I am one of the apparent few who like the hd700. If they use the same drivers, wouldn't it make sense to have the same impedance? Both 150ohm.

[@JayDowney]

i'm on my Massdrop HD 6XX's as i watch this lol. I'd think instead of these at this price point, given everything you've said, try to get the Focal's Massdrop is releasing shortly....

[@vandelaymedia1583]

do you NEED a headphone amp to use the 660s as well as the 650?

[@sarnenduchatterjee6339]

Just ordered them, to be delivered in couple of days 😢 should I cancel ?

[@MarianIanchis]

Does iSine 20 sound better than all of these Sennheiser? How does the iSine 20 compare to them?

[@thetiger3223]

Is the sound clear enough, in the sense that it competes with the most expensive headphones?

[@berdt4870]

What a good time to buy the 650s to be companions for my 580s

[@Squishmallows24]

I just got these and the master & dynamic mw65. Wired always has better sound quality but I like the convenience of wireless so idk which one I should stay with :/

[@trellusg]

I'm keeping my HD 650 and HD 600 and passing (at least for now) on the HD 660S, although not based just on Tyll's review since I have the HD 700 which he reminded us in this video is "just not a good headphone" to his ears, yet I really love the HD 700.

[@malfunkt]

Yeah, I think you have you bases covered. Cost is pretty high on the 660S. Second the love for the HD700, one of my favorites for classical, gaming, and ambient.

[@dotwad11]

This actually makes me really excited hearing that the 660S starts to move it's sound signature closer to the 700. I love my 700, but I also really enjoy my 600. I always wished for something that hit the middle ground a bit better.

[@pvtcmyers87]

I just got my hd 700 a couple of days ago and this is one of my favorite headphones ever. Is it perfect? God no. That treble peakyness is annoying and I just eq it out and there is just gobs of detail and one of the most natural sounding headsets I’ve ever heard. But then again I am kinda new to this. But I LOVE the clarity and detail.

[@mvv1408]

Never change a winning horse... You hinted on the 650 being discontinued. Will the 600 be discontinued as well?

[@conviley]

Could these be used as reference monitors for music production?( I know proper speakers are to be preferred, but I'd like some nice headphones to check levels off of)

[@MichaelPohoreski]

Conviley Closed is better then open for reference monitors as you don't want _any_ sound from the outside when listening to a mix. That said, _try both_ to hear what sounds better for _your mix._

[@Patafisique]

A tragedy unfolds

[@erickauffman]

Thank you for saving me some money!

[@Supperconductor]

I guess the good news here is that one can get an official balanced cable for their HD600 & HD650 from Sennheiser? Is it available as a spare part, and if so, how much?

[@tormaid42]

Supperconductor it’s only useful if you have pentacon on your amp (you very likely don’t). There are mountains of aftermarket balanced hd600/650 xlr cables, though.

[@Mr2pint]

Disappointed but will always have my 600s - interesting they decided to discontinue the 650 and not the older 600..

[@lumntoob999]

Mr2pint if they discontinue anything it will be either the 600 or both 600 and 650, both are much more likely to be discontinued than just the 650.

[@jacekstein6476]

I am a fan of Sennheiser, including this series. I own HD580, HD600 (for many years my favorite) HD650 and of course HD660S. According to me, this new model is the best of them all ... provided new pads are replaced with old ones.

[@nickanderson9922]

Great as always...

[@jonathangeee6191]

Back in 2014, I learned about tyll which contributed to me buying the HD 600's in early 2015. I tried 250 ohm dt880's and 400i's, but stayed with the 600's. I had no yearning to buy the 660's, but decided to look them up randomly on here. It seems like he still has his integrity + will enjoy this hobby for the rest of his life. The 580's were one of the "wow" moments for him in headphones, so you can see why he was emotional about these. I definitely value his opinion.

[@Harolddespui]

In a German review here on youtube the reviewer favoured an X2 over the 650, but he recently did the 660s and that is now his new reference headphone. But only after a serious break-in period. Right out of the box they didn't sound good in the highs.

[@shameite74]

I own the HD600's and the X2's and they are very close in sound signature except for the X2's having more bass. The only problem is that the X2's are not a good match for the Bottlehead Crack or other OTL amps due to it's impedance. And they are no where near as comfortable as the HD600's to me. Not sure about X2's scaling. I am scared to try the HD660S because Tyll is usually spot on and he likes the Sennheiser brand. So for him to say this about them, I would bet on him before I would bet against him. I am going to wait until I can hear them somewhere. I do not want to loose $500.00.

[@Bhushan2837]

Guys, can anyone tell me if the headband clamp mod has to be done regularly or its just a one time thing?