What Would You Ask Sennheiser’s Axel Grell?

We’re excited to have Sennheiser’s Axel Grell here to answer your questions about all things sound. One of the world’s top headphone engineers, he’s responsible for the acclaimed HD 800, HD 650, Orpheus I, Orpheus II, and many more.
Wondering about past designs? Driver technologies? What got him interested in audio in the first place? Tell us what you want to know!
[UPDATE] Interview is up here https://www.massdrop.com/talk/989/community-interview-axel-grell! Sorry for the delay and we want to give a special thanks to Axel for taking the time during the holidays to answer questions from the community.
What an incredible response from the community! We are currently compiling all questions received prior to last week’s deadline. Our current plan is to send them over to Sennheiser this week with the final interview releasing before Christmas. Thank you for your participation and continued patience!
T̶o̶ ̶s̶u̶b̶m̶i̶t̶ ̶y̶o̶u̶r̶ ̶q̶u̶e̶s̶t̶i̶o̶n̶s̶,̶ ̶c̶o̶m̶m̶e̶n̶t̶ ̶b̶e̶l̶o̶w̶ ̶b̶y̶ ̶1̶1̶:̶5̶9̶ ̶p̶.̶m̶.̶ ̶o̶n̶ ̶F̶r̶i̶d̶a̶y̶,̶ ̶N̶o̶v̶e̶m̶b̶e̶r̶ ̶1̶8̶t̶h̶.̶ ̶T̶h̶e̶n̶ ̶s̶t̶a̶y̶ ̶t̶u̶n̶e̶d̶ ̶f̶o̶r̶ ̶t̶h̶e̶ ̶i̶n̶t̶e̶r̶v̶i̶e̶w̶,̶ ̶t̶o̶ ̶b̶e̶ ̶p̶u̶b̶l̶i̶s̶h̶e̶d̶ ̶t̶h̶e̶ ̶w̶e̶e̶k̶ ̶o̶f̶ ̶N̶o̶v̶e̶m̶b̶e̶r̶ ̶2̶4̶t̶h̶.̶
T̶o̶ ̶s̶u̶b̶m̶i̶t̶ ̶y̶o̶u̶r̶ ̶q̶u̶e̶s̶t̶i̶o̶n̶s̶,̶ ̶c̶o̶m̶m̶e̶n̶t̶ ̶b̶e̶l̶o̶w̶ ̶b̶y̶ ̶1̶1̶:̶5̶9̶ ̶p̶.̶m̶.̶ ̶o̶n̶ ̶W̶e̶d̶n̶e̶s̶d̶a̶y̶,̶ ̶N̶o̶v̶e̶m̶b̶e̶r̶ ̶9̶t̶h̶.̶ ̶T̶h̶e̶n̶ ̶s̶t̶a̶y̶ ̶t̶u̶n̶e̶d̶ ̶f̶o̶r̶ ̶t̶h̶e̶ ̶i̶n̶t̶e̶r̶v̶i̶e̶w̶,̶ ̶t̶o̶ ̶b̶e̶ ̶p̶u̶b̶l̶i̶s̶h̶e̶d̶ ̶t̶h̶e̶ ̶f̶o̶l̶l̶o̶w̶i̶n̶g̶ ̶w̶e̶e̶k̶.̶
Please note that, while we love reading all your questions, Axel will only be able to answer a limited amount at this time.

Dec 17, 2021
I would ask whether they tested, and with what methods, the HD800 for its soundstages Accuracy. Certainly they made it wide, but are sounds being psychologically perceived where they should be if it was in the real world, or are their location being distorted? Not a negative review, just stating that I am searching for the ideal soundstage and determined some basic methodology for testing its accuracy and found issues with their lower tier imaging oriented headphones. I would like to know whether the HD800 addresses that.
Sep 25, 2021
Dear Axel, I love listening to classical music and I feel like most modern headphones are designed for contemporary music with focus on specific bass, mids and transients. Is this true? What is Sennheiser’s take on it? I have HD6XX and I love how classical music sounds with them. I use Focusrite Scarlett Solo on 192kHz/24bt/1024sr in a chain with Creative X3 (DAC famous for it signal processor).
Dec 18, 2019
Can you give me a headphone please
Hey everyone. Interview is up here now: https://www.massdrop.com/talk/989/community-interview-axel-grell
Sorry for the delay on that one and hope everyone enjoyed their holidays.
" with the final interview releasing before Christmas."
How long? >_____>
Today! Sorry for the delay on that one
Dec 16, 2016
Has the interview been released yet?
No, not yet. We are still working on it and it should be out soon. We'll give you an update once it's published.
Nov 28, 2016
Is this still going on, haven't seen any replies so far. Did I just missed out? The big question I wanted to know if Sennheiser is working on new flagships after HD800S?
Hopefully, the price is under $2000
Dec 23, 2016
pls, dying to find out
Nov 21, 2016
A pleasure to speak with you Axel. Will Sennheiser endeavour to engineer wireless in-ear headphones that are also waterproof? I know from a marketing point of view these are all the rage right now, but if they are on the cards, now is the right time! Also, considering that fashion is considered more often in headphone purchases these days, is it possible that Sennheiser could produce a sleek, colourful version of the Momentum 2.0, perhaps with the strength of stainless, and with the colour scheme inclusive of Sony and Beats? Again, this is really from a marketing point of view. Thanks very much for your time!
Nov 17, 2016
are there any plans to release a new flagship after the hd800 not counting the orpheus?
Nov 16, 2016
Tyll Hertsens wrote a glowing review of your HD 202 headphones. Do you have new models coming in the under $100 segment? Your warranty is impressive and nearly unique in the headphone marketplace. Suggest you include a replaceable cord option in this price range, as Monoprice does.
Showing 15 of 324
324 OF 324 POSTS