dB-L boosts the volume of your final mix. Don't be fooled by the simple appearance - this is an intelligent lookahead limiter which boosts volume without introducing distortion or other audible nasties. Typical mixes (which have already been normalized to 0dB) can usually be boosted by between 6 & 12dB without any problems.
dB-L can also be used as a brickwall limiter. Stick it on the end of a chain of effects to guarantee your output does not exceed 0dB (or whatever level you set), no matter how hard you push the input.
Also useful for generating heavy pumping compression effects on drum tracks etc.
With optional 16 bit dithering (normal or noise-shaped) for creating CD masters, 64 bit internal accuracy, and support for sample rates up to 24bit/96kHz, this is a truly professional loudness maximizer and mastering limiter.