When I got my first real turntable, a Technics belt drive... and I put a $250 MM cart on it. When I was 16. Listening to my metal albums (I was 16, what do you expect), hearing layers of information and nuance I had no idea were there. Also Supertramp, Pink Floyd, Tangerine Dream, etc.
This is the Ken half of Teo Audio. Taras, the other half of Teo, was into other music...certainly not metal, I'm sure. By the time I was 20 I gave up any metal tunes, anyway. But I'd been playing those albums very carefully and I've still got them.