Flex 5 with 3.5mm tip positive mini-jack plug (black) – Eventide Store
SiYear 3-Pole 3.5mm Stereo Headphone Jack Male Plug Repair Replacement Solder Adapter, 3.5mm (1/8inch ) Solder Type DIY Audio Cable Connector(2PACK)
Amazon.com: Fancasee 2 Pack Replacement 3.5mm Female Jack to Bare Wire Open End TS 2 Pole Mono 1/8" 3.5mm Jack Plug Connector Audio Cable Repair : Electronics