Sound Control - App-specific volume control
Mimi.io - Clear music and sound customized by your hearing profile
EarTrumpet - Volume Control for Windows
Pandora Thumbprint Radio - A hyper-personalized station based on the songs you've liked
Volume2 - Volume2 is an advanced Windows audio mixer, a complete replacement for the standard Volume Control.
NOISESUPPLY - Pandora for SoundCloud