most probably you are right, but I mainly posted his review for his remarks on the comfort aspect. He says what i think is true, that they are just too heavy to feel comfortable and that their clamping force is tremendous. They are mainly for home use with one hour breaks and he says they are not as portable as others. He also agrees with you that the fabric used on the ear cups is itchy on his face. He even says that the headband and the fabric used is feeling really comfortable on the head, helping a lot with all this weight distribution, but still, whatever headband, all this weight cannot of course go unnoticed and eventually the pressure is unbearable! Generally he liked the sound a lot. He just wonders, why the use of metal and why 390 gr?? I find him a reasonable guy generally speaking...
Then there’s the clamping force, which is very strong; AirPods Max squeeze your head like a musical bear hug. This is a common problem with heavy headphones, so I wasn’t surprised to see it here...
He mistakes and incorrectly conflates clamping force with heavy headphones. Clamping force is a function of the spring compression rate of the headband itself, the force required to pull the housings away from each other on the horizontal axis. It has little (realistically
nothing) to do with the weight as it's a function of the stiffness and shaping of the headband itself. A lot of people end up stretching out the headband if they find the clamping force is too high to try to deal with it. It will almost always improve the issue, but not not be enough to fix it for the user. Note how weight isn't removed to improve the clamping force. Clamping force is complained about a lot about the AirPods Max. I don't want to downsize this issue as it exists;
very widely I might add. But it's not related much to weight. Weight plays a role in the
headband when it comes to comfort, and even then it's
partial since that becomes a function of
pressure (weight vs surface area).
Many, many people online complained about the weight of the headphone before they even had a chance to put them on and mistakenly believed that weight makes a headphone uncomfortable when it was only half of the equation and only on the vertical axis. I get that he's trying to ride off this bandwagon of 2-5 more oz = uncomfortable, but he's equated it to the wrong metric of comfort. Weight influences the pressure of the headband on the top of the head (vertical axis) while the clamping force is almost entirely on the horizontal axis.
With the APP the sound quality was the popular thing to poke at when it came to finding a flaw in the headphones as if you don't find issue with an Apple product... Well you know what happens. A lot of reviewers poked at the sound quality because Apple SQ = bad was the trending opinion of many. This kind of got turned around as a bunch of audiophiles figured out it doesn't sound bad... With the APM this turns to the case (which is a huge comprise) and its weight. In reality, the weight is rarely complained about with most users (unless you're trying to exercise or doing something incredibly active) but rather the clamping force, which for all intents and purposes is independent of the headphone's weight. In reality the major flaws were the case, clamping force (independent of weight), and the mesh on the headband feeling delicate. Audio-wise, it has its flaws too (bass texturing, boominess, detail, clarity, vocal energy, sibilance, treble smearing, etc.).
There are other things that are kind of off in the review too...
Yes, much of that magical soundstage is in fact manufactured by the headphones’ Digital Signal Processing (DSP). The same technology that enables
Spatial Audio to work also allows Apple to artificially enhance the sense of space and re-balance the sound to remain steady and clean even at very high and very low volumes. Those dual H1 chips are working hard.
In the words of Luke Skywalker, "amazing, every word of what you just said was false." Spacial audio doesn't run with music. The input itself is kind of wrong for that to run as for a true 3D effect to take place you need a Dolby 5, 6, 7.1 input (5 to 8 way audio input)... Most music is a 2-way stereo input. If Spacial audio was running as DSP for the music he's listening to it would sound like the music was emanating from his iPhone (which would be
extremely awkward).
From what's known, the H1 chips are heavily involved in Spacial Audio (not functioning during music playback), Adaptive EQ, and transparency/ANC. It may also serve a purpose as the main on-board DAC as well (though processing from this perspective would in in the form of any other DAC that exists). Most of this can be shut off by turning off ANC and transparency while listening to music. It's currently debated (as you've seen as of recent) whether Adaptive EQ is being used when these features are turned off. I kind of want to say it's not on to this as the acoustic pressure balance drastically changes when you turn off ANC/transparency and that's at least
part of the trick that Adaptive EQ employs. I can definitely feel this feature working in the APP and APM too, but shut off if you turn off ANC/transparency.