KORG EP-1 v1.0.4 Win | 193.1 MB The EP-1 electric piano sound engine debuted in 2011 in KORG's flagship workstation synthesizer, KRONOS, using the newly developed MDS (Multi-Dimensional Synthesis) technology. This technology allows for smooth and dynamic tonal changes that respond finely to key touch, surpassing the capabilities of previous sample playback methods.