Like 1950s records (4)
I believe the answer is:
mono
(Other definitions for mono that I've seen before include "Transmitting over one channel" , "Not stereo" , "Single-speaker sound" , "Single-channel sound" .)
I believe the answer is:
mono
(Other definitions for mono that I've seen before include "Transmitting over one channel" , "Not stereo" , "Single-speaker sound" , "Single-channel sound" .)