I purchased the Sennheiser HD 620's and it does sound very open for a closed back, it stages really well, not being in your head, I own the HD 569 too and that has a very closed in your head sound, the HD 620's is definitely an upgrade with it's sound in terms of resolution, detail retrieval, imaging, soundstage and dynamics.

The design and engineering team that worked on the Sennheiser HD400 Pro deserves an award. I don't think it is possible to make a more accurate sounding headphone than the HD400 Pro.

Was just looking around to see what Jude thought of the 620s and then this pops up!

This is great, I like hearing explanations behind the thought process. I ordered these, I hope my big ears will fit. A lot of people can't use open back because privacy reasons, especially since working from home is now more common so it's great to get something like this. It's nice to have a headset to be able to play games on and use for calls (with a separate mic ofc) and listen to music. Imaging and soundstage are important to us for video games, maybe Jermo is more of a music only guy but please keep it in mind. I wish you lean more into made in EU branding. Your products are made in EU, it speaks to quality, you should use it. They look and feel premium

Did you just acknowledge the phenomenon that is know as "lingering"? When you explained why the closure introduces the elongation of the sound in time and hence the psycho-acoustical effect. This is important, because in the forums people are fighting with each other whether lingering does really exists or not. Some people say that headphones are "minimum-phase" devices and hence lingering may not be real.

I just purchased the 620s and I'm very impressed with the soundstage, frequency response, and timbre. They seem identical in sound compared to my HD 58X Jubilee. Really the biggest difference is the way they feel on my head. The clamping force is significantly less with the 620s. I got used to the strong clamp force of my 58X and the 620s feels less secure on my head. Was a reduced clamp force part of the design? Thanks.

Class acts all around, got to learn a little in the process!

I saw in a review that these are better then the hd820’s how is that possible? I paid over $2000 for them. For these to be better at $349

Why are there no wireless headphones in the 500/600 series? What to update the line, make it airy 😂

Maraming Salamat, Ginoo Mansilla!

Thank you again for the educational content.

Such a clever designer, I'm looking forward to buying these!

Very interesting video. Thanks!

My HD600 is my standard I judge all other headphones against. I have wanted a closed version for a long time and the HD620s sounds perfect to me. I compared them back and forth and noticed the differences...bass is better and goes lower with more authority than the 600. Transient response sounds better too and the increase in sensitivity is most welcome!

Man I love HD 620 S 🙏

I have a honnest qwestion. how to the momentum 4 (wired and without ANC) compair to the HD620's in trems of frequency response and passive soundstage. I own a pair of the momentum 4 and enjoy them, i did tune the base down a little but wonder if the passive soundstage is a lot better with the HD620 and if it is better to jump to a openback series instead for the soundstage.

Hello. I kindly ask you, please, please re-produce Sennheiser HD 800 first generation textile pads again. They were truly miracles. Unfortunately, alcantra pads are very weak in terms of psycho-acoustics. Enjoy your work.

Does base need inner or outer closing? Does the basy headphone need to have a full back plastic cover or does the ear-pads need to provide high isolation. I suspect that the ear-pads are the important, but many people say [or at least think] that the headphone needs to be closed at the back.

Jermo has shed all of his Harry Potter look. Moving closer to a Weasley?