Send Return (also known as a Insert Cable), conventionally wired: TIP = Send, RING = Return. Can be used as a "Y" to split stereo signal into Left and Right. In this case, Right = RING and Left = TIP. 6.6'
Use to connect audio devices with mini mono phone jacks to pro audio gear.
Sums left and right stereo to a single channel - May be used to connect an iPod or similar device to a practice amp -