The idea of a closed back with that chassis worries me a bit in terms of inter-individual leakage variation. Hopefully the pads will mitigate that.

Can't you simply look at excess group delay to know whether or not a system is minimum phase ? In which case headphones tend to be quite boring in that regard, and it's rare (but can occur) that there is a non-minimum phase feature in excess group delay graphs. I've recently measured three...

Maybe we could throw an olive branch for some implementations with BA drivers with fairly elevated harmonic distortion of the bad kind (H3...) as well ? I can't deny that my crappy pair of NiceHCK X49's harmonic distortion is audible with some signals at common levels. But that may not apply to...

Please people, anything will do for me, even Sennheiser CES presentation's level of sound quality.

I own three samples of the APP2. This is six earbuds in total (two from a version with lighting port manufactured in the fifth week of october 2022, four from two USB-C versions, three manufactured in the second week of november 2023, one in the fourth week of october 2023). This how they differ...

And as I showed you, I measured no significant differences between two firmwares that span wider than the firmwares Aaron compared. So which one should you follow ? I will also add that since Aaron seems to find a change in FR with nearly every APP2 firmware Apple released, and often varying...

I have not kept track of every firmware change and I've progressively learnt how to deal with their active systems, but there you go, for these two I'm confident that it's the same earbud at the same volume level, and that they were reasonably well primed : I slightly increased the damping of...

This is worth a longer reply that I may be able to write this week end. For a start, do we know which ear simulator Aaron uses ? These measurements probably weren't made in an ear simulator such as a 711 coupler (whether an original from B&K or GRAS, or a decent Aliexpress clone) or a 5128 -...

That's a poor idea as the acoustics are entirely designed to be used with active systems constantly monitoring the response and adjusting on the fly to deliver a constant response up to several hundred Hz regardless of fit. I have not been personally able to measure a difference that I...

I have seen two comparisons so far : https://www.0db.co.kr/REVIEW_0DB/3457950 I don't think that there is any evidence of a difference in sound indeed beyond what you'd typically get from sample variation or seatings to seatings / methodological variation when measuring them.

For the APM, I have not seen any evidence yet of a deliberate change of intended tuning over time (ie any differences that I have seen could simply be caused by other variables such as positional variation, improper measurement methodology - this matters a lot for AirPods - or sample variation...

Hello, I'm selling a pair of AKG N700NC. This is the first version with the TruNote feature and micro-USB. They were purchased in like new (open box) conditions and are still in like new conditions. Sold with all the original accessories and the box. I can ship them throughout Europe for...

Not exactly statistics but so far the three reviews that I've seen that published FR for both channels show a rather consistent imbalance at around 200-300Hz : https://www.rtings.com/headphones/reviews/audeze/maxwell-wireless https://boizoff.com/language/en/audeze-maxwell-review-they-did-it/...

Isn't the "crinkle" related to the closed front volume ? Are we certain that the AMTS could affect that ?

It's a 45CA with anthropometric pinna, and the video includes the raw response. Oratory uses a KEMAR but ASR's rig is quite similar.

Do we know how these measurements were performed ? The only difference is to be found in the 800-2kHz range (which is the transitional range for the APP2 between the range where the classic feedback mechanism operates and the range where I believe a form of secondary feedback operates). In...

Yes and No. Dolby Atmos mostly is a way to format a master. If the engineers send the same master to both Tidal and Apple, the song will sound different because, unless I'm mistaken, Tidal binauralises the Dolby Atmos file before streaming it, using Dolby's own binaural renderer, while Apple...

Have you experimented a bit with in-ear measurements (ex blocked ear canal entrance mics) ? Which one of these is the one made on the EAR ? Ok I understand a bit better now. May I suggest trying blocked ear canal entrance measurements on both a DIY rig using these pinnae and in your ears ?

Positional variation on a test rig may not always match variation across individuals. Some variables (such as clamp force for example, presence of hair, etc.) aren't accounted for, and conversely some of these positions might not be superbly representative of how a cohort of real humans would...

A bit of a late reply, sorry, but if this helps in the context of that thread (albeit not for the Expanse per se, but Dan Clark's headphones) : This is the Noire : https://twitter.com/seanolive/status/1577395404026494976?s=20 This is the Stealth : based on the process of elimination, these...

Thanks a lot for that !

My thinking would be that it could cover the costs of doing it properly at the very least, if not introduce additional revenues. But I would also understand it if the Head-fi team prefers the idea of creating an exclusive experience for the people who will attend the show. And there's also the...

I believe that's it's already been explicitly ruled out by head-fi themselves : https://www.head-fi.org/threads/canjam-nyc-2023-february-25-26-2023.965694/post-17382549 Which kills me given the roster of participants to the seminars and the importance of some of the subjects they'll cover. And...

Firmware 2.0 : https://forum.qudelix.com/post/all-new-qudelix5k-v2-0-software-12519138?pid=1334083623

Is it more or less prevalent than the QC45 ? The latter's background noise was to me quite a bit more elevated than some other more recent ANC headphones. I could notice the Bathys' background noise in all modes - this is inevitable ATM with ANC headphones - but it didn't sound to me quite as...