Fab Filter has just introduced a major upgrade to what was already one of the “Gold Standard” Limiters for Bus Limiting and Mastering. It is one of the few that can truly live up to the term “Transparent”. They’ve added lots of new and useful metering options, True Peak Limiting, new algorithms and a “1:1” feature that let’s you hear what the limiter is doing without adding the hype of increased volume. This is not a new concept…Both the L1 and The Slate Mastering Limiter implement it. But I found that the feature in those plug ins revealed just how much damage they were doing to the audio. The Pro-L2 doesn’t flinch, even when pushed hard…essential and the one to beat.