LSSP XL is the entire suite of modules in the Large Scale Sequencing Project.
It includes all of the modules in the LSSP 101 and Adroit Toolkit bundles along with many modules that are unique to LSSP XL.
The product comparison page shows the exact differences between LSSP XL, LSSP 101 and the Adroit Toolkit.
Note that LSSP XL is only available for Cherry Audio’s Voltage Modular.
More information about the Large Scale Sequencing Project