If you want another rabbit hole to start down, I can also recommend Techmoan. He doesn't do teardowns, but instead likes to buy old HiFi gear and reviews them.

If you want another rabbit hole to start down, I can also recommend Techmoan. He doesn't do teardowns, but instead likes to buy old HiFi gear and reviews them. Some of them are incredibly obscure such as the Tefifon: https://www.youtube.com/watch?v=nBNTAmLRmUg https://www.youtube.com/watch?v=nBNTAmLRmUg