Piggy back RCA

My pre amp just has 1 in 1 out so im going to piggy back the input for turn table and PC any1 know of lack of quality to this befor i buy a double socket? I just dont want to keep swapping cables, scared or weaking the ports messing about with them alot ?

your all good bro. go get a cable that goes from headphones to rca. or an auxillery cord. you can take headphone adapters and make the auxillery cord plugs bigger so they fit the front headphone port. ya know? lol