[Timberwolf]

What I like about the '70s stuff is almost everything uses standard parts you can get from any reasonable factor, and the few unique components are usually still simple enough that some hobbyist or small machine shop will be turning them out and selling them. Providing it hasn't been abused it's possible to refurbish something using only simple tools and a bit of testing, and some of the equipment is seriously good even by modern standards. (One of the main reasons I ended up with a '70s turntable is I couldn't find anything new under £1000 with the same sound quality, or that didn't require directly fiddling with belts and pulleys to change the speed.)

By comparison, whenever any of my modern kit breaks down I find the offending part will be unique to that unit, the spare parts supply is nonexistent, and there will be no published specs allowing one to cobble something together.