SmallVolumeStep lets you set a custom number of volume steps
Belkin SoundForm™ Mini Volume-Limited Wireless On-Ear Headphones for Kids White AUD002btWH - Best Buy
Amazon.com: C G CHANGEEK Extra Long Cord Headphones for TV & PC with Volume Control, 18 Feet / 5.5M Extension Spring Coiled Cord, Universal 3.5mm AUX Audio, Wired Over Ear Stereo Headset,
6 Simple Ways To Check If Your Headphones Are Too Loud - Headphonesty
iOS 14: How to Check Headphone Audio Level in Real Time - MacRumors
How to INCREASE Headset volume on Xbox One (Fast Method!) - YouTube
iphone - Volume Randomly Goes to Maximum with Bluetooth Headset - Ask Different
TIL iOS's headphone volume warning is not only for Apple-made equipment. This popped up after I maxed out the volume on my phone while keeping it low on my Qudelix 5K. :
Switchable Stereo/Mono Headphones with Individual Volume Control Per Ear
Wired Over-Ear Headphone, EEEkit Upgrade Bass HiFi Stereo Noise Canceling Headphone, 3.5mm Foldable Music Earphone with Volume Control for Smartphone, Computers, Laptops, MP3 and MP4 Players - Walmart.com
Mpow Kids Headphones with Microphone, Foldable 85/94dB Volume Limit 3D Stereo Adjustable Headband Soft Earcups over Ear Headphones for Kids, Share Function Wired Kids Headphones for School Tablet - Walmart.com
Headphone Volume - Are Your Headphones Safe or Too Loud?
35-4180 - Stellar Labs - Headphone Volume Control, In Line, 3.5 mm Jack
Analog Potentiometer Volume Adjustable TRRS Headset : ID 3959 : $7.50 : Adafruit Industries, Unique & fun DIY electronics and kits
AVID Education AE-25 Early Learner (PK-2) Headset/Headphone with Safe Volume
Volume Control Earphones
Amazon.com: 3.5mm Computer Volume Control Switch, DROK PC Speaker Headset Audio Volume Controller Headphone Sound Switchable Giant Volume Adjuster Knob with 3.5 mm Microphone Interface and 5 Feet Cable : Electronics