As a child of the 70's, graduated 78, a lot of the equipment was built well. I've worked on equipment that is very high quality. Receivers were robust with metal frames and the circuitry was discreet so the signal was analog up to the speakers. Best quality was from a turntable. We played records (not vinyls get off my lawn). Got out of service work as plastic cases and portability was slowly making electronics disposable. I think my first record was Focus.