$1.50 - 1/8" (3.5mm) 3 Pole Audio Jack TRS Stereo PCB Mount - Tinkersphere
Amazon.com: TNP Premium 3.5mm TRS to Dual 1/4 Inch TS Audio Cable (6FT) - Male 3.5mm 1/8" Stereo AUX Auxiliary to 6.35mm 1/4" Y Adapter Connector Wire Cord Plug Jack : Electronics
Oyaide 3.5mm Ultrasone DIY Connector P-3.5 ghp
Wilcox Sound Locking Right Angle 3.5mm TRS Connector Kit For Sennheiser, Sony, Etc. | Wilcox Sound and Communications
Monoprice Metal 3.5mm TS Mono Plug to 3.5mm TRS Stereo Jack Adapter, Gold Plated - Monoprice.com
Amazon.com: UGREEN 6.35mm 1/4 Male to 3.5mm 1/8 Male TRS Stereo Audio Cable with Zinc Alloy Housing and Nylon Braid Compatible with iPod, Laptop, Home Theater Devices, and Amplifiers 6FT : Electronics
Digital iVision Labs!: How Do 3.5mm Jacks (TRS Connectors) Works? | Audio, Diagram, Wire
1/4 IN Mono Male to 3.5mm Stereo Female Adapter – DiamondBoxx
3.5 mm Jack (1/8 inch) TRS / HeadPhones Audio Plug Connector broken & stuck tip inside Headphones socket - TehnoBlog.org
Hosa Technology 3.5mm TRS to 1/4" TRS Headphone Adapter GHP-105
90 Degree Audio Jack 3.5mm trs connector to 3/4 Pole 3.5/2.5mm trrs Headphone Stereo Audio AUX Spring Coiled Spiral Cable| | - AliExpress
TRS 3.5mm Audio Plug (Headphone Plug) - BC Robotics