Volume Booster for Mac

Hear greatly improves audio quality in movies and music throughout all of your Mac OS X applications. With Hear, music is richer, movie sound and dialog is clearer and games will blow you out of your chair! - 3D Sound - Like movies?

Audio Hijack Pro is an advanced program that allows you to easily record audio content from sources such as built-in microphone, system audio, applications or online radio;

Boom is a simple volume booster that lets you boost the volume of your Mac and your music files. Using Boom is simple. You know the ways to change the volume of your Mac. Boom provides the same easy access to boost sound.

SoundBunny is a helpful Mac application that provides you with a quick and easy way to adjust the sound volume of any program running on your computer.

MP3Gain Express is a program that helps you analyze and, eventually, increase or reduce the volume of MP3 files. The application comes with an intuitive interface which allows you to understand easily how this tool works.

Are you looking for better control of the sound volume in OS X? BetterVolume is a replacement for the stock volume control that provides more granular control of the volume level.

I often forget to decrease the system volume when shutting down my Mac and when I turn it back on, the noise in my headphones almost gets me out of my chair.