The Hosa STP-201 Stereo 1/4" Male to 2 Mono 1/4" Male Y-Cable is a "Send Return"
cable (also known as a Insert Cable), conventionally wired: TIP = Send,
RING = Return. It can also be used as a "Y" cable to split stereo signal
into Left and Right. In this case, Right = RING and Left = TIP.