I recall reading something in a design journal, several decades ago, that black was associated with "professional" equipment, beginning in the early 60's. They referenced both chrome and black Nikons, Canon's and Leica's.
In the 70's, higher end separates, from mainstream companies like Technics, Kenwood and Sansui, would have black faceplates while their receivers were generally available only in silver.
In the 70's, higher end separates, from mainstream companies like Technics, Kenwood and Sansui, would have black faceplates while their receivers were generally available only in silver.