This is sort of a “bread & butter” sample pack for the ESX-1, commonly used sounds with some room left over to work with. It consists of drum kits sampled into one long sample and then sliced into individual hits. In this way, each kit takes up only one sample slot.
In this soundset, you will find 808/909 samples, amen break chops and various other kits. There are also some nice single cycle waveforms which allow you to actually use the ESX to synthesize basslines and such.
The cost is $7.99 and it can be purchased here.