3.5mm is an audio source, USB is a data source. Any headphone with a USB plug also has to convert digital to audio, something your phone already does. USB is not a replacement by any means.

It very much depends on the pair of headphones and on the hardware of the phone.

My LG phone is a beast. Sure, it’s not quite the same audio power as a headphone amp would give, but the audio quality and convenience is fantastic.

It still degrades audio quality and that’s an area I refuse to compromise on.

The smartphone is not the expensive part of my mobile audio playback setup, I expect it to be compatible with the standard playback interface of wires.

My headphones (wired) cost more than a smartphone and I expect my handheld device to be compatible with them. I’ll rule out buying models based on this feature.

Really? They’re much better audio quality than bluetooth.

No, the need is still present. Headphone jacks are pretty essential still, wireless tech is not a replacement.

There’s no time domain or data source given in these. 0.2TWh could be tiny if it’s annual, or huge if it’s daily.

I assume it’s merely that they import energy from neighbours.

Here’s a map of who exported electricity in Europe in 2022, and who imported: https://www.powerengineeringint.com/wp-content/uploads/2023/03/EU-Interconnector-Map-H2-2022.jpg

Let me introduce you to open street maps. https://welcome.openstreetmap.org/what-is-openstreetmap/ or more simply https://www.openstreetmap.org/

After Volvo announced, Polestar announcing seems like a footnote addition rather than a separate announcement.

I’m trying to say that location count is more important than stall count. Stall count is still important, but a wait is a minor inconvenience in compsrison to not being able to travel on the north shore of the St Lawrence too far north of Baie-Saint-Paul because all the northern charging stalls are concentrated in that one location

It makes no sense to replace 75% of the infrastructure.

This is tragic. The infrastructure for CCS1 far exceeds NACS on a location count basis and having manufacturers switch to this plug type is anti-progress.

12,000 superchargers is counting stalls, not locations. Why are we counting fuel pumps instead of gas stations? That’s not how strong network coverage is defined.

There’s less than 2,000 NACS DC fast charging locations in the US & Canada but there’s over 6,500 CCS1 DC fast charging locations in that same area.

You can see the lack of infrastructure NACS offers on a state-by-state basis here: https://public.tableau.com/views/EVFastChargingPlugStandards/PublicDCFastCharingPlugs

Maybe consider starting to play with Darktable. Get a sense if it is a viable alternative to support.