In the XBase HiHat, Rim, Clap, Ride and Crash are samples stored as 8 bit data on a chip. Xrom is a circuit that replaces this chip and adds four times the memory. There are four sample banks available which can be selected by holding the button SHIFT/FUNC while pressing ENTER one to four times. What samples are on the extension? It is your choice! Samples can be loaded over MIDI Sysex - you create your own sample banks...
Optional three LEDs can be mounted in the case which will show you the status of the module. Two LEDs for the bank number, one for the general status and sample transmission...
Using the converter software, audio files can be converted into the Sysex format and then sent to the XBase using a MIDI software like MIDI-OX for PC or SysExLibrarian for Mac.