Sennheiser HD650 & Massdrop HD6XX Impressions Thread - Head-Fi

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IMG_3269.jpeg IMG_3165.jpeg IMG_3074.JPG HD650.jpg HD 6xx (1).JPEG IMG_3119.jpeg 1000014376.jpg 화면 캡처 2025-12-13 122333.jpg IMG_3038.JPG 20251128_123831.jpg IMG_0406.PNG IMG_2093.jpeg IMG_2091.jpeg IMG_2092.jpeg IMG_2879.jpeg 1762800994168.png IMG_6807.png IMG_0790.jpg IMG_0701.jpg IMG_0700.jpg See full thread gallery... You are using an out of date browser. It may not display this or other websites correctly.You should upgrade or use an alternative browser. Sennheiser HD650 & Massdrop HD6XX Impressions Thread
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  • Thread starter Thread starter tangsta
  • Start date Start date Sep 24, 2006
  • Tags Tags massdrop massdrop x sennheiser hd6xx sennheiser sennheiser-hd-650-headphones
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Luckyleo

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Joined Jun 9, 2006 Posts 4,409 Likes 21,054 Location Sarasota, FL USA
SR1se said: So.. 6XX it differnt from 650? Rtings said it has different graph. I don't know what is true. Click to expand...
Well, according to my own ears, as well as the opions of countless reviewers with much better ears and much more experience than me in reviewing, the two are the same. Obviously, I'm just some guy with an opinion, so take it with a big grain of salt :) Furthur! Main DAC: Yggdrasil (Byggy), Honorable Mention: Bifrost 2/64 Amps: ZMF Aegis, Violectric V222, Schiit Valhalla 3, Schiit Vali 3, Jotunheim 2, Feliks Audio Espressivio Headphones: A lot!!!! LOL. Favs right now. Abyss JOAL, Grado HP100 SE, Atrium Open, ZMF Ori 3.0, ZMF Bokeh Open (Canary) Other: Streamer: WiimPro. CD Player: SMSL PL100 megabigeye

megabigeye

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Joined Feb 24, 2009 Posts 1,914 Likes 1,191 Location Hither, Thither, Yon
Arcayne said: On the official product page of the HD650, this claim is made: 1640852498293.png On the HD6XX product page, no such claim is being made. Click to expand...
This has been my suspicion for a long time: that the HD 6XX is made from out-of-spec HD 650 drivers. It might explain why both are kept in production. Grainy - A slightly [UNDEFINED], [UNDEFINED] sound which lacks [UNDEFINED]. Not [UNDEFINED] or [UNDEFINED]. WilcoRoger

WilcoRoger

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megabigeye said: This has been my suspicion for a long time: that the HD 6XX is made from out-of-spec HD 650 drivers. It might explain why both are kept in production. Click to expand...
I think you're wrong. Drop has already sold over 150k units of the HD6xx - if Sennheiser had 300k+ off-spec drivers, they'd be bankrupt by now. IMO the Drop and 6xx are just a major distributor with a slightly tweaked (cable, color, etc) product. If a distributor moves 100k-150k units, they can ask any color and cable length they want! Having a slightly different name also protects the markup Senn still commands via their "normal" distribution channels. BTW currently Drop sells the HD6xx for $179 "ready to ship" - steal of the year (the other one is the Focal Elegia) PS - the HD58x sells now for $129 (!!!). That's another 75k units sold (another 150k off-spec drivers? I don't think so) Last edited: Dec 30, 2021 megabigeye

megabigeye

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Joined Feb 24, 2009 Posts 1,914 Likes 1,191 Location Hither, Thither, Yon
WilcoRoger said: I think you're wrong. Drop has already sold over 150k units of the HD6xx - if Sennheiser had 300k+ off-spec drivers, they'd be bankrupt by now. IMO the Drop and 6xx are just a major distributor with a slightly tweaked (cable, color, etc) product. If a distributor moves 100k-150k units, they can ask any color and cable length they want! Having a slightly different name also protects the markup Senn still commands via their "normal" distribution channels. BTW currently Drop sells the HD6xx for $179 "ready to ship" - steal of the year (the other one is the Focal Elegia) PS - the HD58x sells now for $129 (!!!). That's another 75k units sold (another 150k off-spec drivers? I don't think so) Click to expand...
You may be right, I really don't know. But... Maybe I could have phrased it better. Not out-of-spec, per se, but looser specs. My understanding is that out-of-spec drivers are essentially waste and therefore lost money. Tighter tolerances is one of the reasons higher-end headphones are more expensive than lower-end ones. If the HD 650 is +/-1dB of a certain target, then the HD 6XX could be, say, +/-2dB of that target. Selling at a discount the drivers that they'd otherwise have to discard would be a good way to offset that loss. Just spitballing, but they might even be able to loosen their manufacturing tolerances and be able to save money that way, too. As I recall, the HD 6XX was originally meant to have a limited run. A second run was (at least as far as consumers were concerned) never a certainty, let alone 150k units. My guess was and is that the HD 6XX was originally an end-of-life liquidation plan for the HD 650 before the HD 660S (which was supposed to supplant the 650) came out... But then it sold more than anticipated and plans changed. The 58X isn't the same driver as the HD 650/6XX, is it? Different size, different impedance? Grainy - A slightly [UNDEFINED], [UNDEFINED] sound which lacks [UNDEFINED]. Not [UNDEFINED] or [UNDEFINED]. N

Nikonkit

Head-Fier
Joined May 9, 2014 Posts 94 Likes 46
Kammerat Rebekka said: The 6XX and 650 are identical outside of the different colour schemes. People often come into this thread claiming otherwise yet those people are often the very same who haven’t yet understood the importance of pads…how pad wear can change the presentation of the very same headphones..in fact so much that people will believe that the 6XX and the 650 are different headphones! ..which they are not. This has been debunked a thousand times over the net. Same drivers, same specs, same sound. Click to expand...
I beg to differ, I have both, using the pads from the 6XX and auditioned with another friend who has better hearing than me, we both thought the HD650 sounded more organic, more focused, 6XX sounded more like the HD600 than the sibling, cleaner than the HD650, a touch wider soundstage, leaner overall, ymmv. Strat1117

Strat1117

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Joined Aug 9, 2019 Posts 2,011 Likes 4,254 Location UMRK
SR1se said: So.. 6XX it differnt from 650? Rtings said it has different graph. I don't know what is true. Click to expand...
Who knows? People who own 6XX say it is. People who own 650 say maybe not. No surprise either way - in my experience, most people on the internet just throw out self-serving, baseless opinions in order to justify their own purchases. But I’m an old cynic. YMMV. As to the 58X question, it’s a totally different driver than the 6XX. It’s similar, but NOT identical, to 660S/700. I’ve had all 3 in the house and they each sound very different from the other two. For $129, the 58X is a steal. Sounds great. I’m sure the same could be said for the 6XX at $180, even if it’s not identical to the 650. The GOOD NEWS is that they are all very good, and you get to choose what flavor you like best. Enjoy! Last edited: Dec 30, 2021 These days there are so many odd and troubling noises in [MY STEREO SYSTEM].- China Miéville WilcoRoger

WilcoRoger

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megabigeye said: As I recall, the HD 6XX was originally meant to have a limited run. A second run was (at least as far as consumers were concerned) never a certainty, let alone 150k units. My guess was and is that the HD 6XX was originally an end-of-life liquidation plan for the HD 650 before the HD 660S (which was supposed to supplant the 650) came out... But then it sold more than anticipated and plans changed. The 58X isn't the same driver as the HD 650/6XX, is it? Different size, different impedance? Click to expand...
That actually sounds plausible - instead of being EOL the 6xx became a hit on its own. That they don't GUARANTEE a certain tolerance, doesn't mean that the product is out of the tighter tolerance, especially as they come from the same line. Same as with some Etymotic earphones - for the ER4 the drivers are hand matched, for the ER3 the same drivers are not - probably noone can tell the difference. Yes, the 58x is a different driver, I meant to say that Senn cannot have 300k + 100k off specs. Kammerat Rebekka

Kammerat Rebekka

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Joined Sep 27, 2017 Posts 2,246 Likes 10,762 Location Denmark
Nikonkit said: I beg to differ, I have both, using the pads from the 6XX and auditioned with another friend who has better hearing than me, we both thought the HD650 sounded more organic, more focused, 6XX sounded more like the HD600 than the sibling, cleaner than the HD650, a touch wider soundstage, leaner overall, ymmv. Click to expand...
I have also heard differences between the 6XX and 650..hell I’ve heard differences between my 600 and my uncle’s 600 - 2 identical headphones…yet it has always been a matter of different pad wear changing up the sound. Opting for a pair of fresh pads on both cans..and the differences magically disappear:-) ‘When you’re thinking about gear you’re not really listening to the music’ - Danish bear-fella DenverW

DenverW

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Kammerat Rebekka said: I have also heard differences between the 6XX and 650..hell I’ve heard differences between my 600 and my uncle’s 600 - 2 identical headphones…yet it has always been a matter of different pad wear changing up the sound. Opting for a pair of fresh pads on both cans..and the differences magically disappear:) Click to expand...
You took the words right out of my mouth. Until there is a volume matched fresh pad double blind yadda yadda yadda test it’s hard to think any of the differences could come down to anything other than pad wear. It makes a big difference as it wears down. Headphones: ZMF Atrium Closed Black & White Ebony, ZMF Aeolus Black Persimmon “Chocolate Pudding” Iems & DAPs: Bellos X4 Custom, Noble Fokus Mystique, Calyx K, Ibasso DX340 Amps: Mass Kobo 394ii, Aegis 'Prince in Amber' SE Pre: Bottlehead Moreplay w/Upgrades, Power: Equi=Core 600 Dacs: Musician Taurus fon55

fon55

New Head-Fier
Joined Jan 2, 2017 Posts 20 Likes 15 Mam hd650 i klucz sprzętowy Cayin RU6 r2r, ta kombinacja działa bardzo dobrze, gra jest bardzo wciągająca i analogowa, polecam. fon55

fon55

New Head-Fier
Joined Jan 2, 2017 Posts 20 Likes 15
Gavin C4 said: [DOŁĄCZ=pełne]3986855[/DOŁĄCZ] Kombinacja stosu HD6xx i OOR jest tak minimalna i brzmiała świetnie. OOR ma dobrą dobrą moc dla 6xx. Click to expand...
Jestem z Polski i miło mi zobaczyć tą kombinację ,jest bardzo udana,w Polsce się bardzo dobre produkty audio jak Felix audio ,Acient Audio czy okablowanie Forza. Last edited: Dec 31, 2021 atarione

atarione

500+ Head-Fier
Joined Oct 8, 2016 Posts 639 Likes 829 oh man.... apparently the comments I have seen about clamping force are no joke... hopefully these things loosen up a bit after some use? I am liking the sound but I'm not that pleased with the headvice clamping force. 4

457139

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Joined Aug 12, 2016 Posts 1,610 Likes 2,828 I think the 6xx images better than the 650 and sounds a little bit less warm Last edited: Dec 31, 2021 tafens

tafens

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Joined Mar 13, 2015 Posts 1,447 Likes 4,512 Location Sweden
atarione said: oh man.... apparently the comments I have seen about clamping force are no joke... hopefully these things loosen up a bit after some use? I am liking the sound but I'm not that pleased with the headvice clamping force. Click to expand...
It does loosen up after some use, but some of it will be due to pad compression which is derogatory to the sound. A good tip is to extend the headband fully and carefully bend outward on the metal band parts a few times and then push them back to your preferred size. This will loosen the clamp force a bit. Done carefully, it will make them sit firmly on the head but with a comfortable amount of pressure. Some also suggest to grip the plastic of the headband and bend outwards, but this concentrates the force on the “dimple” in the middle of the headband and risks breaking it if not very careful. It can work to loosen the clamp force too, but I wouldn’t recommend it. Head-Fi: Folkvangr/GungnirMB, Lyr3/Bifrost2, Lyr3MB, Asgard3MB, Vali2+/ModiMB, Magni2U • Two-channel: Modi2U/Magni3 -> Rekkr, Yggdrasil+GS2/FreyaS -> Aegir • Headphone: Sennheiser HD8XX, HD660S, HD6XX, HD600, HD590, HD58Xj; HiFiMan HE-4XX Kammerat Rebekka

Kammerat Rebekka

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Joined Sep 27, 2017 Posts 2,246 Likes 10,762 Location Denmark 😆 Major-Edith here..I even managed to confuse myself trying to explain how to fit a Sennheiser on the old cabeza. Here goes another try: If you divide the top of your head into three parts; the front, middle and back, this is probably much easier to understand😅 The front is where most of us wear the bandages if we had a bum experience at the dentist. The middle is where 90% of all headphones’ headbands rest…and well the back is where you place your HD580/600/650/6XX/58X/660. In order to do so you will need to open up the headband even further than what seems reasonable. I started out on 4-5 click on either side of the headband…but then again I was wearing the Sennheiser just like my other headphones, which was a mistake. Too much clamp and I always seemed to fiddle around with the fit. Then I realised the above, opened up the headband twice as much and moved the headband slightly further back..and voila! The comfort of the mighty 6 series that everyone else had been talking about suddenly appeared in all of it’s glory✊ I have a normal sized head. I am on 10 clicks on each side of the headband (yes I count!). My buddy who truly has a Frankenstein-like head..well he had his Sennie on about 6 clicks…and always complained about the clamp. I performed the same magical feat ie opened up the headband about twice as much and placed the headband slightly further back on his head…and it looked like I’d opened up a window in his brain. Last edited: Jan 1, 2022 ‘When you’re thinking about gear you’re not really listening to the music’ - Danish bear-fella Prev
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