Mastering Tool Demo is a dedicated audio utility designed for macOS, catering specifically to audio content creators. This free software offers three essential modules: The Infinite Wheel, Beast Equalizer, and Master Limiter, all built using Apple’s AVAudioUnit technologies. These tools are aimed at enhancing audio files for a professional finish, allowing users to achieve optimal sound levels that meet industry standards.

The Infinite Wheel module provides an endless fader for precise gain adjustments, while the Beast Equalizer features a 66-band equalizer combined with a relative linear spectrometer to ensure sound fidelity after modifications. Lastly, the Master Limiter prevents audio levels from exceeding specified thresholds, such as 0 dBFS or -14 LUFS. This combination of features makes Mastering Tool Demo a valuable asset for those looking to refine their audio projects.