[sheinsheish]

The Sony wh1000xm4 can function passively (minijack connection) and the noise absorption happening just because they cover your ears is sometimes enough. When you switch them on it’s another world.

https://www.sony.com/electronics/support/wireless-headphones...

[square_usual]

True, I own those, but when switched off it's not ANC. Like OP, I'm interested in seeing if something can match ANC, like in the AirPods Pro, but without a battery at all.

[xvaier]

It's a 3.5mm connection, but the sound quality is noticeably worse when they are off and running passively, even when running them through an amp.