Yes, Steve Jobs was CEO of Next when they got bought

that seems like it had way more to do with the decision that anything technical. What the team at Next built is quite impressive as well, but the goal was to get Steve Jobs back.

But it's great at dissolving bones, and it does that even if you just get it on your skin

That has the center earth pin. Doesn't fit in to Schuko

If you find a schuko in Italy, it will have the center earth pin.

440V would be split phase. We have 400 3phase here

Even 5 cm is more than enough for home use, or do you know a chip that is bigger?

If it's also used as an analog phone line don't touch, if it's ringing you will get shocked

Is that enough for just the TCP ACKs?

You can record it with a PC. Just make sure to use a lossless format

How well does this work with lossy compression? I would trust only lossless formats and analog with digital data encoded as audio, but I have zero hands-on experience with this

The bit rate of a speccy tape recording was only about 1500 bps, and we routinely recorded on the cheapest tapes, and tape machines that were little better. I'm sure it'll be fine.

Technical details for those interested: https://sinclair.wiki.zxnet.co.uk/wiki/Spectrum_tape_interfa...

Minimodem at 300BPS with the audio encoded to OPUS at 64 KBPS makes pretty reliable dumps with a relative small space per hour (~30MB).

Both the CD and the ZX Spectrum came out in 1982

If you had a CD playing device at home by 1982, it would be like having an 8K 60" TV today.

Or, as a better match, a high end VR device able to push 4k games to each eye at 120FPS.

Everyone and his grandma used tapes/cassetes until mid 90's.

Yeah, I was about to respond with something like this. I knew that CDs came out in the early 80's, but I still more or less associate them with the 90's; it wasn't expected that you bought a CD for music until then. As a very little kid I had cassettes for my sing-along tunes, by the time 6 or 7 (1997-1998), it feels like pretty much everyone had made the jump to CDs.