PSP Twin-LPSP Twin L is a dual algorithm classic limiter effect. The aim of this plug in is to provide a wide variety of shaping options. PSP Twin L is able to emulate the main features of two types of limiter: VCA limiters, which is a modern type of analog limiter, and Opto limiters which are vintage optical limiters. PSP Twin Ls limiting algorithms are not intended to emulate any specific hardware, but rather to bring the capabilities of both types into a