Unveiled: Meet the HD 620S
May 11, 2024 at 6:22 AM Post #136 of 312
Would you recommend these to someone who has the HD650/6XX/560/660/660S2/630/58X:stuck_out_tongue:
I think you know the answer 😁 haha

But seriously, thanks for being an awesome customer. That's a great collection!!!

I can confidently say that the HD 620S has a unique tuning among all of the cans you just listed so there is almost zero redundancy from an overall signature perspective. Of course, I hope you get to try them as your opinion is the Golden one 👍👍
 
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May 11, 2024 at 7:26 AM Post #137 of 312
Can you tell me 🙏 if headband pad is replacement like 6 series or is glued? Is possible buy spar parts like for 6 series earpads and headband strap....etc???

I like the sound of 660s2 which i have at home but i need more bass and soundstage if 620s be good match for me...treble and middle is good tuned i don t need more pircing treble and middle in on my face which 660s2 have balanced tuning....it will this sound like 660s2 or more 560s because I hate thin and pircing crystalline sound of 560s?

Thanks
 
May 11, 2024 at 10:08 AM Post #138 of 312
Placed an order direct from Sennheiser. As you can see from my sig, I'm a bit of a fan.

Excited to try these, I've been unimpressed with Sennheiser closed backs in the past. I will say that the hd 598cs was super comfortable, so I'm glad they kept the 5 series design, and it makes sense in terms of trying to maintain soundstage as the 5 series earcups with the reflector in the cup do a great job at it.

Also like that these have the same connector as the 560s, so I can use the vmoda boon pro + adapter combo I have for those to turn this into a headset.
 
May 11, 2024 at 10:23 AM Post #140 of 312
Placed an order direct from Sennheiser. As you can see from my sig, I'm a bit of a fan.

Excited to try these, I've been unimpressed with Sennheiser closed backs in the past. I will say that the hd 598cs was super comfortable, so I'm glad they kept the 5 series design, and it makes sense in terms of trying to maintain soundstage as the 5 series earcups with the reflector in the cup do a great job at it.

Also like that these have the same connector as the 560s, so I can use the vmoda boon pro + adapter combo I have for those to turn this into a headset.
Thank you so much! Based on what you describe I think you are in for a treat.
 
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May 11, 2024 at 10:25 AM Post #141 of 312
Can you tell me 🙏 if headband pad is replacement like 6 series or is glued? Is possible buy spar parts like for 6 series earpads and headband strap....etc???

I like the sound of 660s2 which i have at home but i need more bass and soundstage if 620s be good match for me...treble and middle is good tuned i don t need more pircing treble and middle in on my face which 660s2 have balanced tuning....it will this sound like 660s2 or more 560s because I hate thin and pircing crystalline sound of 560s?

Thanks
The padding has an adhesive but will still be replaceable. Based on the material spec it should last a long time. You will be able to buy a spare parts for it. The HD 620S is indeed more brilliant in the treble, that I think many will describe as "clean" as it lacks sibilance but still has bite. We hope you get to try them but it sounds like you love a more relaxed sound.
 
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May 11, 2024 at 11:09 AM Post #142 of 312
@Jermo K / @ericpalonen - can you reveal any reasoning or thought behind making the HD620S impedance 150Ω as opposed to 300Ω?
The only not-very-popular 600 series was the original HD660S which happened to be 150Ω... I am not saying that was its downfall, but HD660S2 changed (among other things) the impedance to 300Ω and is so much better!
For the record, HD600 was my very first audiophile headphones, and I still own and love it. HD660S2 is great, and is in my collection too... :wink:
It comes down to flexibility for the user. The 150 ohms allow the HD 620S to be driven by dongles, and yet make them much more consistent in sound quality out of higher impedance sources.

This is our first serious entry to mass market closed-back headphones, and especially at that price point there are very few references for orientation. We thought for a while about launching two headphones, but in the end we want to learn and see how people use the HD 620S and improve based on that. if we get a lot of feedback, you may see higher or lower impedance variants in the future :)
 
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May 11, 2024 at 11:20 AM Post #143 of 312
One should ask themselves: is that because the 660S is better, or is it because they took 600/650 off of store shelves and put 660S there, making it harder for ordinary consumers to buy HD 600 and 650?

Or is it because they’re not counting HD 6XX sales?

They can claim what they’d like but the fact remains that HD 600 and 650 haven’t been replaced after more than 20 years in production, but they replaced HD 660S within just over 5 years (after massive price reductions that still didn’t make 660S an appealing purchase to audiophiles who want solid midrange performance.)

We should get back on topic re: HD 620S though.

My question for Sennheiser is: why wasn’t more of an effort made to minimize the magnitude of the cancellation in the 200 Hz region? The claims of “HD 600-like” midrange are gonna prove rather false to those with trained ears because of the lack of the 6-series trademark low-midrange bloom.

For better or worse, I expect more from Sennheiser than other brands because of their pedigree, but they continually disappoint in modern times. After years and years of development of closed back headphones, this is something they should be able to do, especially considering the AKG K361 and K371 were able to achieve a less dipped lower midrange at a much lower price.

On the topic of the open 600 series: the HD 660S was upgraded because we saw the opportunity for improvement without compromise to the customer. It's much harder to build though :^(
We've seen a lot of love for the HD 660S2, and it handily outsells the HD 650 and 6XX combined. Of course distribution is a factor, but I believe people that really want an HD 650 will find a way to buy it.

The 200 Hz dip is by design. It allows for a steeper bass shelf without muddying up the mids. We had variants without a dip, and our expert listeners did not prefer that option. To me, the HD 600 series is unique for its balanced tonality, natural timbre, and yet brilliant sound. The low-mid range bloom is not something that needs to be kept.

I believe we managed to integrate the strengths of the 600 series to a large degree in the 620S, with punchy bass and a more differentiated soundstage. I do hope that you find the opportunity to judge the headphones by ear.
 
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May 11, 2024 at 11:24 AM Post #144 of 312
The padding has an adhesive but will still be replaceable. Based on the material spec it should last a long time. You will be able to buy a spare parts for it. The HD 620S is indeed more brilliant in the treble, that I think many will describe as "clean" as it lacks sibilance but still has bite. We hope you get to try them but it sounds like you love a more relaxed sound.
I hope sennheiser make alternative to 560s with more relax sweet and natural tuning of hd6 series like 660s2 which will be perfect with more bass and better soundstage...glued headband never exist in 6 series
 
May 11, 2024 at 11:31 AM Post #145 of 312
I predict they will be a smash. The 600 is -5 db at 30 Hz and the 620 is +6 db at 30 Hz. When a poster says that they will finally have decent bass, it's an example of the desire of the market for "fun tuning".

As I wrote in the defunct thread I'd like a less smoothed FR for these, and distortion measurements in the bass - say at 100 and at 30 Hz - the distortion given at 1KHz doesn't really say much. Will have to wait for the reviewers that don't actually sell them to get that sort of info.

Also do not know why the thread in the Headphone thread is closed - lots of stuff on there - like the new Stax - that's not released.
Thanks for your confidence, I share it :)

Regarding measurements: I was a bit hesitant to directly compare the HD 620S with the HD 600 in a graph because it's an apples-to-oranges comparison with closed vs. open. The new Focal headphones measure quite similar, but to my ears the tuning works much better for the closed variant than the open one.

For closed-back headphones, similar to IEMs, you need a bass lift to sound natural compared to speakers or open headphones. On the other hand, even though it doesn't show more amplitude than the HD 600 in the treble, it does sound brighter. The comparison graph is a handy marketing tool, but I urge you to try to listen to them. Regarding distortion, don't worry. Closed-back headphones work with a closed front volume, so the diaphragm doesn't need to excurse as much, and THD will be a magnitude lower than comparable open headphones.
 
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May 11, 2024 at 11:40 AM Post #146 of 312
The HD620S were on display today at the High End Munich show, and I had a chance to listen to them.

For me, the standout aspect of these headphones is the remarkable clarity. There is a "cleanliness" to the sound that is often not there in the lower-priced closed back headphones.

Also, the staging and imaging were akin to the HD660S, and the bass response is pretty good in terms of impact and punch. Changing pads will further increase bass response from what I learned so there is room for further tweaking.

If I have to find one criticism it would be the treble response, which could be peaky with certain tracks. Again, I had a very short demo in a not-so-ideal condition, so take this impression with a bit of salt.

In terms of build and comfort: no complaints there. The earpads are plush and the headband has ample foam padding.

Overall, I think these are very interesting in terms of pricing and performance, and should be one on the list to audition for the fans of HD6XX series.

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Thank you so much for your impressions.
The clarity/brilliance was my biggest priority during the development, and it elevates the HD 620S over almost all other closed-back headphones. To me, clarity makes music fun to listen to, and in the past that was really hard to come by if you don't want to annoy others.
 
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May 11, 2024 at 12:05 PM Post #147 of 312
Thank you so much for your impressions.
The clarity/brilliance was my biggest priority during the development, and it elevates the HD 620S over almost all other closed-back headphones. To me, clarity makes music fun to listen to, and in the past that was really hard to come by if you don't want to annoy others.
Yes but this fun factor make it fatigue listen anm no more relax before bed time or need relaxing music...to treble people is the most sensitive becouse can be enjoyed or make it pain in the ear fatigue sound no match enjoyed in long listening season...it must sound natural not elevated end not pircing without sibilance but clean sound is this like hd620s have it?
 
May 11, 2024 at 1:21 PM Post #148 of 312
Yes but this fun factor make it fatigue listen anm no more relax before bed time or need relaxing music...to treble people is the most sensitive becouse can be enjoyed or make it pain in the ear fatigue sound no match enjoyed in long listening season...it must sound natural not elevated end not pircing without sibilance but clean sound is this like hd620s have it?
It's not possible for one headphone to accommodate all personal preferences, but we are pretty confident that we are filling a decent sized hole in the market with it's tuning and presentation. Hope you get to hear them with your own gear and ears 👍
 
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May 11, 2024 at 1:44 PM Post #150 of 312
To me, the HD 600 series is unique for its balanced tonality, natural timbre, and yet brilliant sound. The low-mid range bloom is not something that needs to be kept.

I've never agreed with something more. I'd love the 6XX except for the low-mid range bloom AND the stifling sensation I get from the small soundstage. The first feature is easily addressed with EQ, but the second is not.

If this has a larger stage with the smooth tonality and timbre of the 600 line it'll be a winner in my book.
 

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