No headphone jack in your amp? No problem! Old style “can openers” Pioneer JB-21, Heco UT 3, Canton Connect 50 | Audio-room
modern legacy: 3.5mm headphone jack - techspire
The 19th Century plug that's still being used - BBC News
Amazon.com: 2.5mm Female to 3.5mm Male Plug Adapter Stereo 10 Pack Lot 2.5 mm Female to 3.5 mm Male Stereo Headphone Audio Jack Signal MP3 Plug Connector : Electronics
These are the best phones that still have a headphone jack
Breathe New Life Into Old Headphones : 8 Steps (with Pictures) - Instructables
Replacing an old Headphone Jack : r/3DO
Apple kills headphone jack (1878 – 2016). RIP. | TechCrunch
Amazon.com: Professional Cable 3.5 Mini Stereo Jack (Headphone) to 1/4 Stereo Plug (Large Headphone) : Electronics
Amazon.com: Cubilux Lightning to 3.5mm TRS Microphone Adapter with Headphone Jack Compatible with iPhone 14 Pro Max 14 Plus/13/12/11/SE 2/Xr/Xs Max/8/7, 1/8” Audio & MIC Splitter for Old iPad (Lightning Version) :
How to repair Nokia Earphone, How to repair Old Nokia Earphone jack,Nokia earphone Convert Android - YouTube
How to Hack a Headphone Jack
Intel also wants to replace the 3.5mm headphone jack | KitGuru