How to Hack a Headphone Jack - Circuit Basics TRS Audio Jack. TRS audio plugs are found on standard stereo headphones that don’t have a microphone. After you cut into the cable, you’ll probably find one of three common ways these can be wired: Copper wire ground sheath wrapped around two insulated audio signal wires.Raspberry Pi · Arduino · How to Design a PCB Layout · DIY Electronics · Programming · Resources Audio Connectors - Walmart wwwart›Electronics›ComputersAudio Connectors. Electronics. Computers. Product - 24K Gold Plated Audio Banana Plug Audio Speaker Wire Jack Connector (4/Pack) Product Image. Price $ 6. 65. Product Title. 24K Gold Plated Audio Banana Plug Audio Speaker Wire Jack Connector (4/Pack) Add To Cart. There is a problem adding to cart. Please try again.