Glad to read your review.
I don't really understand how the cancelation works. When I flip the switch, like you, my sense is that the volume increases by a notch, which seems like a "trick" for improving the signal rather than true cancelation. Regardless, they sound good either way. So this is more of my skepticism shining through rather than a genuine complaint about the headphones.
well I wish they would lower the volume one step when you activate the ANC, when I A/B I do press both one volume step down and anc button at the same time to hear the difference. In most cases, it will sound better with ANC, but the ANC will make it more warm sounding, some music can benifit from that "saturation" so what you simply have is a choice when to use it or not even when listen in silent room. the ANC will only work in specific scenarios it is not as good as sealed headphones, but for constant noise, it can be.
Open ANC phones is still to prefer if you care about your ears, these phones will create less sound pressure then typical sealed IEMs.
this is a good thing, it is a big strain on the ear otherwise. The Jumpers should be a lot thicker, it would make it more comofortable to have in your ear.
The comfort is not very high, but I think maybe my ears will get less sensitive to have those jumpers pushing in the ear after some time maybe.