The brand stands for Radio Corporation of America, and I believe the connection type comes from the company as RCA/Victor was the developer of the commerical Phonograph machine and early radio equipment that first utilized the connector.
I think that RCA brought the Victor company sometime way back. Anywho, RCA invented the RCA plug & socket combo, but yes, mainly for use with record players.
The RCA type connector may predate electronic phonographs - remember the early phonographs were acoustic only. My grandparents were ham radio operators back into the 1920's and IIRC there were RCA jacks on some of their really old radio gear.
I thought a Japanese company bought Victor Co and renamed the company to JVC, not trying to do a spin-off of any sort. Anyone else got some info on this?
jvc is the victor corporations american (and possibly european) branch. if you looked for jvc products in japan you would only find the same product labeled victor.