I hate the 4 Channels didn't catch on.
I had one back in the early 70's and it was fun to sit in the middle of a room and let the music spin around you.
The speakers could blow out a match from a foot away
Yup...
I'd get home from pulling alert and flying an eight hour mission, put on the Sansui 9001 QRX, lay on the floor in the middle of the living room and relax to The Dark Side of the Moon. Our neighbors knew that I was back home...
