TBProAudio tells us that LA xLimit is an advanced look ahead, wideband linked-stereo limiter including ISP (inter sample peak) detection and oversampling. They say that the goal of the design was to cover a broad range of limiting applications in today's mixing and mastering situations with strong focus on low aliasing. Here's the details in the company's own words...
LA xLimit is specifically designed for mastering, digital editing, multimedia and any application that requires limiting of the digital signal with top notch quality and lowest aliasing.
LA xLimiter guarantees ultra fast and overshot free response by using advanced look ahead algorithms.
In order to fulfill today's TV, broadcast and music production requirements LA xLimiter offers True-Peak limiting (ISP) based on ITU-1770 specification and on top of it up to 8x "real" oversampling. Combined with True-Peak limiting reaches even highest production standards.
LA xLimit includes an advanced adaptive release control system which reduces massively artifacts caused by fixed release times.
Both stereo channels can be freely linked/unlinked to increase limiting sensitivity.
click-free 64-bit internal processing
state of the art low aliasing look ahead limiter design
"real" oversampling, up to 8x
4 limiter modes: hard to smooth
2 level detection modes: peak and ISP based on ITU 1770