SpeaKa Professional SP-5741548 4 ports RCA audio switch | Conrad.com
Buy LINEPAUDIO Audio Switcher 3.5mm 2 in 1 Out / 1 in 2 Out A/B Switch Stereo Audio Splitter Box with at affordable prices — free shipping, real reviews with photos — Joom
Mini 2(1)-IN-1(2)-OUT 3.5mm Stereo Audio Switcher Passive Selector Splitter Box