In addition to the Rotary CLS-222, FX Collection 4 brings together previously available effects that were sold separately. These include the Dist Coldfire distortion plugin, the Filter MS-20 inspired by Korg synthesizers, and an upgraded version of the Rev LX-24 ’80s reverb box. Several tools within the collection have also received enhancements, such as 40 new presets for Efx Fragments, expanded functionality for the Bus Force and Rev Spring-636 effects, and support for NKS VS3 and Apple Silicon AAX.