Change Volume Level in Chrome Browser with Volume Master
15 must-try audio extensions for Google Chrome - Softonic
Amazon.com: BOSS Audio Systems MC625BA Motorcycle Speaker Sound System - Bluetooth, Amplified, Weatherproof, 3 Inch Speakers, Multi-Function Volume Control, Also Use with ATVs UTVs : Electronics
MP3 Volume Changer, Cloud MP3Gain
How to Normalize or Change the Volume of Your MP3 Files
SoundAssistant for Samsung Galaxy gives you app-specific volume controls - gHacks Tech News
VolumeUp - Sound booster
Google Chrome - Control The Individual Volume of Each Tab
How to Make MP3 Files Louder? (Increase or Decrease the MP3 File Volume) - Appuals.com