New Sennheiser! - Review of the HD620s and comparison with the DT 770 Pro and the 770 Pro X

[@notPipe]

Great review, by far the most informational review I've seen on these! I think I'm going to pick these up when I get the chance.

[@VeitLehmann]

Thanks a lot for the excellent review! I just purchased the DT 770 Pro 80 Ohms after comparing them to a bunch of other headphones in the same and lower price-range (AKG K-361 and K-182, Sennheiser HD 280 Pro, Superlux HD 660 Pro and HD 662F, and the t.bone HD 815). For my ears, the DT 770 Pro outperformed all of them by a mile! But then I was wondering if I was missing out by not spending even more and throwing the DT 770 Pro X, DT 700 Pro X and HD 620S into the mix. Maybe also the AKG K-371 and the Shure SRH-840A. I guess I can stop worrying and just enjoy them 😅

[@absolutelyaverageaudioreviews]

Thank you! Yeah the 770 Pro is still a very good headphone. I would say the 700 Pro X is maaaybe a bit of an upgrade if you want a bit more bass and are bothered by the treble peak of the 770, but I have only listened to the 900 Pro X which I think is a great open back headphone. The 770 Pro X like I said in the review is really quite different, MUCH more bass and treble and no flat midrange. Maybe more of a WOW-factor at first because bass and treble clarity, but then you do notice the weirdness in the midrange. I do like the 620s a lot. Bit more natural sounding but still clear. I have never listened to the K371 and the Shure 840A, but the 840a is generally reviewed quite well since it follows harman pretty closely. But like you said, the 770 Pro is great and very enjoyable. Most them are kind of a sidegrade or a bit of an upgrade rather than night and day (as long as you do not prefer one tuning over the other).

[@VeitLehmann]

@@absolutelyaverageaudioreviews I couldn't resist and ordered the DT 700 Pro X and the DT 770 Pro X LE for comparison: To my ears, they are not better than the classic DT 770 Pro 80 Ohms. The DT 700 Pro X only have a touch flatter mid/upper mids, but lack energy in the lower mids/upper bass and sparkle in the upper treble. Lower treble can still sound annoying (e. g. cymbals, the DT 770 Pro handle them way better for me). And Soundstage is considerably more narrow. The DT 770 Pro X LE add the missing upper treble sparkle and soundstage back, but yes, they are much more V-shaped than the others. And they lack upper bass/lower mids as well, especially compared to the exaggerated lower bass, which buries the tone of bass guitars. Treble is the most annoying here. So in the end, for me, the only benefits of the Pro X models are the fact that they're much more efficient and easy to drive. They are still great, I still liked them much better than any other brands I tested. But for me they are no competition to the excellent DT 770 Pro. So no doubts anymore, I found _my_ closed-backs! 😁Especially since I also really value durability and repairability, which is something where most other brands just can't compete with Beyerdynamic at all (including Sennheiser, AKG and Shure).

[@absolutelyaverageaudioreviews]

Exactly! The missing upper bass and lower midrange makes some somehow sound more bassy and less bassy at the same time depending on the instruments. I also mentioned the weird weakness of some bass guitars in my other comparison. Out of the three, the 770 Pro seems the most natural sounding because it has just a little dip in the area where both other Beyers have a huge one. Glad you can finally sleep well knowing you have found a headphone you really like haha.

[@MARYOLIONHEART]

@@absolutelyaverageaudioreviews These can work good with a DX180 player?

[@merouby]

Excellent review and perfect comparison. Love that you compared it to the Beyerdynamics 770 because it costs half the Sennheiser and is a fabulous closed-ear headphone. Like many who come here, they have high hopes that Sennheiser has finally pulled off the impossible and created a 600-series closed ear, which would be the Mount Olympus of headphones if done correctly. Reading reviews it seems that while the 620S is good, it isn't the perfect closed-ear either. I have my HD620S on order - I hope it compares better to my Beyerdynamics 770 Pro 32Ohm.

[@merouby]

Spoiler Alert: Returned the 620s - the Beyerdynamics is much better in every way except maybe mids - The Senn was a disappointment - especially with sub-bass in comparison to the Beyerdynamic 770 Pro

[@MARYOLIONHEART]

Instead HD620s, wich one is better from these 2, DT 770 Pro or 770 Pro X?

[@absolutelyaverageaudioreviews]

Thanks alot, both for your comment and your opinion on the HD620s. Sorry you did not like it that much, opinions seem to differ strongly between listeners with this headphone. But yeah, the DT 770 Pro is still a great closed back and that is why I included it in this comparison and also came to the conclusion that it is every bit as viable for listening/studio use in our current audio market.

[@absolutelyaverageaudioreviews]

770 Pro X is strongly V-shaped, meaning more bass and treble than the 770 Pro. So it depends on what you want: more balanced sound with deep and clean subbass and flat mids -> DT 770 Pro more rumbly and booming bass with very clear treble and kinda weird midrange (best for listening to electronic stuff) -> 770 Pro X

[@MARYOLIONHEART]

@@absolutelyaverageaudioreviews you refer these Beyerdynamic DT 770 PRO X Limited Edition, right? These can work good with a DX180 player?

[@thatchinaboi1]

A word on the Sennheiser HD 620s regarding powering them with headphone tube amps. Unlike the HD 400 Pro, they don't particularly improve the sound quality. So you are better off using a very clean SS headphone amp with the HD 620s. That's my advice.

[@longkick649]

Great review!👍

[@absolutelyaverageaudioreviews]

Thanks alot!

[@longkick649]

If I really like high frequencies, will I like the 620s? I have the Beyerdynamic DT 770 Pro 32 and I really like their high frequencies.

[@nd.c.1098]

Nice review, imo the HD620s sounds similar to the old beyer dt150 but more comfortable, actually both model sounds a little bit like HD600! Thank you.

[@absolutelyaverageaudioreviews]

Thank you! Yeah I guess that really was their intention, updating the 600 Sound and putting it in a closed back.

[@residentzero]

I like my dt770 pro X above everything, including: final Azurys, dt770 pro 80ohm, k371, hd25, hd650, px7 S2e, all of which i also own. For open back and second preference my hd599 are great, and for ear buds FF3S are about equal, and these against all of my IEM (Hype 4, em10, ea500lm, mp145, etc). Out of these second and very good still is the Hype 4 but i can't use in ear much anymore for skin issues

[@Kuolitee]

How would the HD620s compare to the Sivga Oriole?

[@absolutelyaverageaudioreviews]

The 620s has a bigger bass emphasis and sounds thicker and fuller than the Oriole, which does sound a bit cleaner here because it has the "mud-cut" around 150hz-300hz (which I do think is too big of a dip and influences bass guitars and other stuff in a negative way, sounds just too thin and weird sometimes). Oriole does have nice low bass extension and some electronic stuff has reeeally nice rumbly and thumpy bass. 620s is a bit softer here, but still nice. Midrange is more natural on the 620s, Oriole is kinda shrill sometimes while the 620s sounds realer and neither thin nor overly emphasized. It does carry on with the warmer and fuller sound, Oriole is more aggressive in the upper midrange (female voices and stuff). Treble is okay on both. Again 620s sounds pretty natural and balanced to me (but with pretty good technicalities), the Oriole has a bit more energy. Both are comfortable and built really well. I did sell the Oriole because I could not unhear the dip and althoug alot of headphones with a bass emphasis do have a similar dip, it somehow sounded more present on the Oriole to me. So it either depends on if you wanne have a thicker, more natural or a more aggressive (both bass and midrange) sound with good clarity. Staging is also nice on both.

[@michelmeijer]

How good is the isolation in comperisson to the 770's?

[@absolutelyaverageaudioreviews]

Pretty comparable. Both seal well for me.

[@thatchinaboi1]

Best sounding closed backs I have heard. But compared to my favorite pair of open backs (HD 400 Pro) they sound closed (despite the hyperbolic marketing), warm (due to the mid bass bump), and lacks the dynamics and accuracy of the HD 400 Pro.

[@Kuolitee]

Have you used the Sivga Oriole? How would the HD 620s compare?

[@damiendubocage6312]

hello , can you compare the clamp force 620s with 560s please ???, it s less or same ??? for me the 560s is too tight o,n my head

[@pk.002]

It has less clamp force than the 560s.

[@absolutelyaverageaudioreviews]

Feels way less clampy to me than the 560s. Also has thicker padding.

[@iamwoteveriwanttobe]

You meant business at the start of the treble section! These are £300 here so you're splashing the cash on these. Are they keepers? They are definitely something I'd be interested in. I still need to get a HD600 or 650 though at some point.

[@absolutelyaverageaudioreviews]

Haha what do you mean with business? :D I had to re-record that section because there was some noise issue in the original so it sounds a bit clunky. And yeah they are not cheap, but I really like these and will definitely keep them. Will sell the Beyers probably since they are kind of redundant now.

[@iamwoteveriwanttobe]

@@absolutelyaverageaudioreviews It means to get serious. For example two gentlemen arguing and then they roll their sleeves up to fight. You could say they mean business because it's getting serious. It was basically a joke as I saw that you had rolled your sleeves up albeit briefly. Yeah I thought you might keep them. I don't blame you and I'm a bit jealous. 😀

[@absolutelyaverageaudioreviews]

Ah now I get it! I did not even realize the sleeves situation haha. Sorry you had to explain the joke. :D The only thing (I tried to say this in a few different sections in the review) is that the bass is not that impactful or physical. It really sounds a bit soft, whereas for example the 770 Pro X has more bass impact. I am not bothered by what others say sounds boxy in the lower midrange. I do hear it a bit in some songs, but to be honest its really not that noticeable and for me all sounds pretty natural. I also read some reviews talking about the high clamping force. I had the 58x which felt WAY clampier than the 620s, and the padding is really good here. Its a closed back for noise isolation, it has to clamp a bit and at least to me it feels very average. But its not a loose sitting headphone, which some maybe prefer. Reading different reviews, opinions seem to be very divided. People saying mids are honky, others saying it basically sounds as good as their studio monitors. Some say treble is dull and they are not detailed, others say its very well extended but smooth. I read that they apparently measure different with different headshapes. I still think its a pretty good headphone with a slightly relaxed sound. Weird how different we can experience sound.

[@iamwoteveriwanttobe]

@@absolutelyaverageaudioreviews My fault. I kind of forgot English isn't your first language, (as you speak it so well) so shouldn't have assumed you knew the expression. I'm sure I thought my 560s and 599s clamped a bit strong on first use. Nothing that bothered me though and it was probably because some of my other over ears were a bit loose fitting. But yes a closed back needs a bit of a clamp. So if you're not used to it you may complain a bit about the clamp force. Yes it is interesting how headphone reviews can be so mixed and even reviews that are complete opposites of each other. I think some major research is needed to fully explain it and I suspect there are multiple factors including maybe our brains do their own EQ!

[@thatchinaboi1]

Overall bass of the HD 620s is nowhere as accurate as the HD400 Pro, which sounds perfect all throughout the audible frequency range.

[@merouby]

Not fair to compare an open-ear headphone to a closed-ear one. Naturally, it is easier to get a good sounding open-ear headphone. The challenge is to find a closed-ear one that's just as good.

[@thatchinaboi1]

@@merouby HD 400 Pro is everything I want in a pair of headphones except for isolation. They are pretty much perfect.