A guide to audio connectors and cable types - SoundGuys
FRONTX - Panel Mount Headphone 1/8" (3.5 mm) - bulkhead headphone female socket to male jack
Amazon.com: ANNNWZZD 3.5 mm to 6.35 mm Cable,6.35mm Male(1/4 inch) to 3.5mm Female (1/8 inch) Headphone Jack Adapter for Mixer Guitar Piano Amplifier Speaker and More (1.5ft) : Musical Instruments
Apple investigating new headphone connection, which won't fit existing earphones | What Hi-Fi?
Headphone Jacks and Plugs: Everything You Need to Know - Headphonesty
Headphone Jacks and Plugs: Types, Sizes, and Uses
3.5mm TRRS Headphone Jack - DIY Keyboards
Microsoft patents expanding 3.5mm headphone jack - Audio Visual - News - HEXUS.net
What is the normal headphone jack size? - Quora
Apple patents half-height 3.5mm headphone jack, ready for slimmer future iPhones - 9to5Mac
PJ-612A 6.35mm Audio Headphone Jack 1/4 inch 5 Pin Audio Microphone Female Socket Plug Panel Mount Solder Conenctor with Nut - AliExpress
Phone connector (audio) - Wikipedia
Tens Lead Wires - 3.5mm plug to Two 2mm Pin Connectors (2) - Discount Tens - Walmart.com
Sherwood Receiver Replacement Headphone Jack 1/4" 3-Pin (1-Piece) | eBay