I like those guys too! Xraytonyb rebuilt a mitsubishi amp and preamp I own that was my dads. I think I will rebuilt it in the future and his 2 part vids on it will be super helpful!

Very very generous when people like those share their knowledge. Dlab electronics is another good one. He’s all about tube radio gear and guitar amps.

Johnaudiotech is awesome as a way to help me fall asleep when I’m restless thinking about work. Bad sleeper as I get older.