The SoundForce Samples is a 4HP 6-channel drum module.
The 6 sounds available on separate channels are the one-shot sounds from the infamous LinnDrum drum machines. It’s using a big STM32F411 chip to drive the 6 DACs and store the sounds. The samples are baked-in and can’t be changed.
The LD version has 2 banks of sounds for the bottom 3 jacks, the switch at the back allows you to choose between the 2 banks. Please note you cannot choose the sound of each of the 3 bottom jacks, it’s either the tom sounds or the percussion sounds.