3.5mm TRS to XLR Adapter Cable (15FT) - Male to Male Stereo XLR Pinout Breakout Y Adapter Splitter Dual XLR to 3.5mm 1/8" TRS Auxiliary AUX Headphone Audio Jack Plug Converter Wire
How to get the pinout for a 3.5mm female audio jack (audio, connector, pinout, electronics) - Quora