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- Users: Jermo K
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Unveiled: Meet the HD 620S
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...- Jermo K
- Post #146
- Forum: Sponsor Announcements and Deals
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Unveiled: Meet the HD 620S
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...- Jermo K
- Post #145
- Forum: Sponsor Announcements and Deals
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Unveiled: Meet the HD 620S
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...- Jermo K
- Post #143
- Forum: Sponsor Announcements and Deals
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Unveiled: Meet the HD 620S
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...- Jermo K
- Post #142
- Forum: Sponsor Announcements and Deals
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Unveiled: Meet the HD 620S
We had zero meetings on the cable entry :smile: Since closed headphones are more likely to be used in a mobile setting, I believe one-sided entry is much more convenient. On the signal side, the receptor has balanced wiring, so you can attach balanced cables as well. In theory the HD 630VB also...- Jermo K
- Post #39
- Forum: Sponsor Announcements and Deals
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Unveiled: Meet the HD 620S
We know that it's a bit confusing at first, but for us the sound quality is the determining factor. We're sure it will become familiar fast ;) For closed headphones, the chassis of the 500 series is a much better fit. It is more lightweight, compact, and has a one-sided cable. The 600 series...- Jermo K
- Post #31
- Forum: Sponsor Announcements and Deals
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Sennheiser HD 660S2 thread
The backside of the transducer is identical, but the coil of the S2 is copper coloured, while the 660S had a blue coil.- Jermo K
- Post #4,637
- Forum: Headphones (full-size)
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Beyond the Curve - An Audiophile YouTube Series
Hi, thanks for the kind words and great questions. 1. The minimum phase argument may be attractive for people that really like measurements, but I personally don't care for it because it disagrees so much with experiment/experience. If FR really were so important, you could equalise any artifact...- Jermo K
- Post #61
- Forum: Sponsor Announcements and Deals
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Beyond the Curve - An Audiophile YouTube Series
Hi, thanks for your confidence in our team. I believe we'll address this topic in a later episode, but I'm happy to give some background why it's unfortunately not so trivial for us: 1. Burden of scale: Sennheiser/sonova consumer hearing is many times larger than practically all our competitors...- Jermo K
- Post #33
- Forum: Sponsor Announcements and Deals
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Sennheiser HD 660S2 thread
The fast answer is: the driver in the HD 660S and the HD 700 is the same. The long answer: The older KDH 580 developed for the HD 580 and still found in the HD 600 and HD 650 is to this day mainly hand assembled, which is not ideal for some precision processes, even though it's extraordinarily...- Jermo K
- Post #1,782
- Forum: Headphones (full-size)
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Sennheiser HD 660S2 thread
I don't know, what does that mean to you? If you look at the color or size, that's the same. The acoustic difference between HD 660S and HD 660S2 have mostly been achieved by significant changes to the transducer, which has a markedly different diaphragm, voice coil and magnet chassis, which are...- Jermo K
- Post #1,773
- Forum: Headphones (full-size)
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Sennheiser HD 660S2 thread
The NDH 30 uses the diaphragm of the HD 560S. It's a polymer blend with extraordinary internal dampening, so afterringing after the initial impulse is minimal. At the audiophile team of Sennheiser/Sonova, we have done a multitude of listening tests (also for the HD 660S2) and found that it...- Jermo K
- Post #1,768
- Forum: Headphones (full-size)
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Discover a new world of sound: Make way for the IE 200
Hi, thanks for the questions. First, regarding discontinuation: In EMEA and America, the IE 300 has been phased out in favor of the IE 200, as we believe the IE 200 is a superior product for most of our customers. As you may know, Asia's IEM market is much larger, so we'll wait a few months to...- Jermo K
- Post #89
- Forum: Sponsor Announcements and Deals
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Exceptional in Every Detail: Say Hello to the IE 600
Thanks for the question! Let's clarify the terms first: research refers to working on new technologies that "may" end up in products down the road but have a high chance of failure. Development mainly takes existing solutions and modifies them to create a new product. However, even turning small...- Jermo K
- Post #289
- Forum: Sponsor Announcements and Deals
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Increased Production at the Audiophile Center of Excellence in Ireland
Hi, thanks for the great question. We have transferred production of different product lines over the past six months, i.e. 600 series headphones have been built since summer in Ireland. The team was already incredibly experienced with this product, so we never had better availability before...- Jermo K
- Post #31
- Forum: Sponsor Announcements and Deals
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Increased Production at the Audiophile Center of Excellence in Ireland
We updated the tooling for the 600 family during the time it was transferred to Romania. We reused the space reserved for "Made in ..." for necessary regulatory markings like CE. Since we continue to use the same tooling, the new Irish made HD 600, HD 650 and HD 660S won't have the mark, but...- Jermo K
- Post #29
- Forum: Sponsor Announcements and Deals
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Increased Production at the Audiophile Center of Excellence in Ireland
It's both correct in a sense. Historically, Ireland has always laminated the transducer foils for the HD 800 S. The magic in most of our headphones comes from our patented Duofol-technology, which combines properties of a stiff plastic for brilliance with a polyurethane that provides compliance...- Jermo K
- Post #19
- Forum: Sponsor Announcements and Deals
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Increased Production at the Audiophile Center of Excellence in Ireland
3 years ago there was a strategy of specialization of the plants, ie. intensive manual labor in Romania, high-end products in Germany and automated manufacturing in Ireland. Since then a lot has happened and the two divisions of Sennheiser, consumer and professional, will act independently of...- Jermo K
- Post #18
- Forum: Sponsor Announcements and Deals
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Increased Production at the Audiophile Center of Excellence in Ireland
The plant in Germany will exclusively focus on microphones and wireless systems, Romania will build the affordable microphone products as well as professional headphones like HD 25. Ireland will be the manufacturing plant for most of our audiophile portfolio in the future, except affordable...- Jermo K
- Post #15
- Forum: Sponsor Announcements and Deals
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Live Q&A: IE 900 with Jermo Koehnke
Hi yaluen, Thanks for your in-depth questions. I'd be much happier for one of the acoustic engineers to go into detail, but at some point you go into very valuable knowledge. Your first assessment of the IE 800 technology is nearly accurate. The effect is actually worse and harder to account for...- Jermo K
- Post #145
- Forum: Sponsor Announcements and Deals
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Live Q&A: IE 900 with Jermo Koehnke
To your question on a source of education: The Loudspeaker and Headphone Handbook by John Borwick is a tremendous resource, but it requires a strong engineering background to appreciate.- Jermo K
- Post #144
- Forum: Sponsor Announcements and Deals
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Live Q&A: IE 900 with Jermo Koehnke
They would fit. Our 500 and 600 series headphones have the same chassis size, so you can freely exchange transducers (which is brilliant for tinkering at home :smile: ). A caveat is that the HD 600 and 650 have the transducer chassis combined with the connectors, so there's much more effort...- Jermo K
- Post #139
- Forum: Sponsor Announcements and Deals
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Live Q&A: IE 900 with Jermo Koehnke
Hi James, thanks so much! I usually have fit problems with in-ears, so comfort was one of the main focus areas of the team. Even though the sound is our main priority, I'm happiest about how the IE 900 practically disappears in my ears. I hope you have a great time listening to your music!- Jermo K
- Post #137
- Forum: Sponsor Announcements and Deals
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Live Q&A: IE 900 with Jermo Koehnke
Thanks a lot! The HD 600 really is an unmatched milestone and one of my most used headphones. But we're working hard to do even better, and there's so much untapped potential.- Jermo K
- Post #136
- Forum: Sponsor Announcements and Deals