Headphones too Quiet? How to Make Headphones Louder on Windows 11 PC - YouTube
Avantree Duet - Dual Wireless Headphones for TV Watching with Transmitter/Charging Stand 2-in-1, Clear Dialogue Mode & Volume Boost for Seniors, Scalable to 100 Headphones - Black - Walmart.com
Improve your phone's sound: Headphone volume booster apps and more