Kindasortayesansno
I bought the cable and have tested it with a few sources. Some things to consider:
You have to turn your headphones volume up on the Digital Crown to provide headroom. They are not getting power from the line, but line-level gain increases are audibly heard.
So with the apple headphone adapter, you have to crank up the headphones and then the volume from the iPhone is honestly kind of meh.
If you want a closer approximate of a traditional headphone, turn the ANC/Transparency to “OFF” from an iOS device -BEFORE- you plug in.
All in all, for me, it was a fun experiment but these succeed so hard as wireless headphones that the process of using a wire feels self defeating when I have passive cans waiting for me on headphone stands.
If I were mastering and checking my mix against consumer products after studio tuning, I’d honestly probably just do it wireless because that’s what most people will be hearing. It really is puzzling why anyone would use these for mastering.
I think I might play around with using the transparency mode and the wire for DJ Mixes where I can press the button for silence and then hit transparency when I live-mix the song into the mains. It sounds fun but also not very practical and I don’t expect it to be part of my workflow.
For me, I’m happy letting these succeed as the wireless over-ears in my collection. I think, for me, this really simplifies how I approach the hobby with a newfound focus on any future non AirPods cans being either for TOTL pleasure, DJ Mixing or Recoding Mastering... and sometimes just because I like the product