Connectors 1: 3.5mm 1/8" TRRS (4-Pole) Male jack, Connectors 2: AV 4-Pin Screw Terminal Block jack
Connecting single wires with open cable heads to your 3.5mm jack.
It has four total conductors - three signal and a ground as opposed to a more common stereo jack's two.
No soldering required! Use stranded or solid core wire and a small screw driver to create custom wiring jigs.
It is more convenient to use more quickly without welding.