Boom is a simple volume booster app for Mac that boosts the system-wide volume and also provides a sound equalizer option.
Boom can boost the audio in the music/video files, which can then be synced to the iTunes and ultimately listen to the boosted audio on the iPhone/iPad.
Boom works on the system level and so is independent of any running media app. Thus Boom can help boost the audio output if you are watching a video on YouTube, making a Skype call, watching a movie on Netflix, listening to online radios or enjoying movies and music on the iTunes.
Boom volume booster demoAdded: 12/17/11