If someone wants to try more - some electromagnetic damper/filter sources here (be sure, that you choose filter with correct diameter for your IEM -s): https://eu.mouser.com/Electromechanical/Audio-Devices/Speakers-Transducers/_/N-awp4u?P=1yyy7vr also from here...

Hopefully, it's all better nowadays... I was first in my country who got HD800... almost ONE year after official purchase through local official dealer (sure, Sennheiser always 'feeds' ;-) bigger countries before small ones).

Combating Standing Waves... not only in studio... https://www.pro-tools-expert.com/home-page/2018/1/8/combating-standing-waves-with-a-studio-subwoofer-sonarworks-reference-4-speaker-calibration

if you sometimes feel troubled with pro HD800 (or other hp's), keep volume normal (as any pro user will suggest) and/or try this: https://www.sonarworks.com/reference good almost for everybody who need more or less balanced sound...

best 'soft' or 'semisoft'' sound related solution for headphones or 'Hi-Fi' speakers or 'studio' can be here: https://www.sonarworks.com/reference just give it a try...

best 'soft' solution (for headphones or 'studio') is here: https://www.sonarworks.com/reference

just tried to visit www.ifi-audio.com, but result with different browsers was just 'www.ifi-audio.com’s server IP address could not be found' or 'Unable to determine IP address from host name www.ifi-audio.com'. Hope it's just small problem in 'www' or 'website maintaining'...

_ Not sure, what is going on: is it a problem with 800, or amplifier, or DAC, or recording or 'all problems together' including 'human factor'... it's always suggested to listen 800 with low-to-moderate volume level (and no, there's no problem with 800 at high volume, but human ears are somehow...

___ It seems, that Sennheiser is going on with 80x the same way as it did with 6x0... this means 'for years to come'. So I am keeping too my 'old' 800 going on with my listening habits and also for editing my video soundtracks (mostly cultural events and lecturers i.e. maybe most important: a...

Hi! Are You using computer/device USB3 port ('blue'-marked)? If yes, then try older standard USB2 port or/and update USB drivers (to latest possible version). [It worked for me, with micro idsd]

I had 650 older, first (or second) year version, which, when compared to later version of 650, sounded 'darker' (and I am not alone who discovered that difference). Also I compared 600 and 650 ('old' version) and the very first impression that came to my mind was, that 600 sound was like a pair...

Hello, that has been subject of discussion for 'long', also here in Head-Fi. To quicken Your search from threads of Head-Fi.org look here: https://www.google.com/search?hl=en&as_q=subwoofer+with+headphone&as_epq=&as_oq=&as_eq=&as_nlo=&as_nhi=&lr=&cr=&as_qdr=all&as_sitesearch=head-fi.org

  Seems, that nothing have changed in this area of San Francisco. About 10 years ago some head-fiers asked exactly same question, without positive results...   but one suggestion was to contact with R B Electronics there... company still exists, but focusing, at least nowadays, on high level...

Hmm... is it more about hi-fi or mixing-mastering...etc (rarely discussed 'together') Sure there are some, also pro level, monitors, what could be used as 'home' audio main speakers too (mainly not below several thousand USD, because so called home audio must have decent i.e. 'multimedia level'...

iFi PRO series audio production is starting...The Pro series plans are the iDSD, iCAN, iUSB Power and others.     iCAN PRO Balanced Hybrid Headphone Amplifier (will be next month? available)   ...instead of making their iCAN+iTUBE, they have chosen to combine the two into a single unit...