What was the Shure SA-10?
In the mid 1960s, Shure offered the SA-10 portable Solo-Phone system. It consisted of a four-speed Garrard record changer, a Shure M44C phono cartridge, and a stereo headphone amplifier with a level control and a balance control. Two sets of headphones could be used simultaneously. The entire unit was enclosed in a vinyl-covered wooden case with a carrying handle.
Also available were Shure stereo headphones, model HP-25, that retailed for $41 in 1965.