
Some mixes require a bit of balancing the information spread between the channels, and Stereo Tool v3 is prefect for this application. The five different themes allow the user to change the look to various classic VU and PPM Meters, which is a nice touch. Its five modules include: RMS compressor, peak limiter, high-frequency limiter, clipper, and true peak limiter.

It offers more control than LoudMax, which can be helpful if your program material requires detailed tweaking.

This is a more complex and versatile take on limiting. The interface is simple, clear, and even somewhat customizable. It provides spectral analysis, correlation metering and clipping detection, as well as displaying RMS and max crest factor. As I cover in the course, Metering is absolutely essential to mastering, and SPAN is a versatile and free utility plugin. Here are some completely free plugins that you can work into your in the box mastering workflow ….

Although nothing can replace an experienced engineer, working in an expertly designed room, on high-end equipment, there are some fantastic free tools available online that will aid engineers working on projects with limited budgets. As I cover in my new course Mastering in the Boxthere are some incredible plugins available for anyone interested in computer-based mastering.
