The compact apartments included a wall of appliances and cabinets built into one side, including a kitchen stove, a refrigerator, a television set, and a reel-to-reel tape deck.
A typical cassette adapter uses a single-sided writing tape head (similar to the recording head on a traditional tape deck) connected to a stereo minijack connector with a cord.
He was also responsible for nearly single-handedly inventing many of the engineering methods used in modern recordings, from microphone placement and cabling to board and tape deck tricks.