If you like 1970s rock music, particularly hard rock music, something you love was recorded or mixed in a Record Plant studio. If you have a favorite live album from the '70s or '80s, it was likely recorded by a Record Plant Mobile truck.

The all-in-one stereo component occupies the same territory as those Italian restaurants that also serve sushi and Texas barbecue. Every instinct says it's a dubious overreach: Few chefs master two or more distinct cuisines. But then you experience that rare eatery that somehow nails the California roll, the carbonara, and the brisket, and you realize that dismissing it on principle could mean missing something that's genuinely excellent.

Like many vinyl obsessives, I've amassed a considerable CD collection—a 10' × 15' wall of them, behind dark blue curtains in my listening room. It is almost as if I was concealing a dirty secret from purist analog snobs, including me.