40-644 | Stereo 2 Way Audio Input Selector (A+B). Enables 2 audio inputs to be switched to 1 output. Slim metal chassis with black finish. Mounts with velcro, included or double stick tape. 2 L+R inputs, Female RCA jacks. Output cable with L+R Male RCA plugs, 5' long. Size: 3" (W) x 1" (H) x 2.9" (D).