If you can't find what you want commercially and you don't want to deal with adapters it would be a relatively simple job to make one yourself with three pair of chassis-mount RCA jacks, a small project box and a switch.
Audio switch with 1 input and 2 outputs
I'm planning to set up a vintage system in parallel with my main system. I'd like to be able to switch the RCA output from an AR turntable between the phono stage that drives my main system and the built in phono stage of my Marantz Model 18 receiver. I found one that seem to do the job, but it has mini plugs. Any suggestions?
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