I ran snakes thru my walls for studio use, about 75 ft, plus sometimes 30-40 feet of mic cable, yes that is balanced, but I also use them for the return trip down for headphone monitoring for musicians, total run there, UNBALANCED, 125 feet. In a prior life I ran unbalanced (rarely, but did do it) trough 50 foot snakes to a patch bay then to the sound board at front of house that had snakes running through the floors and walls, all total ???200 feet???, might lose a little in signal strength at 50 feet. And you don't have the common mode rejection of balanced so you may pick up a LITTLE noise but really 50 feet is plenty fine.