I wonder how coherent the sound of that setup is.
There's a very interesting dynamic between the two Koreas. Other than the vast political and economic differences, they act much like competing siblings. When one country built a visitor center in Panmunjom, the other responded by building a larger one. When one installed a large flag on a tall pole, the other responded with an even larger flag and taller pole. And so it goes back and forth.
Regarding Korean speakers, my band opened for S. Korean artist Insooni in 2006 in Songtan, Pyeongtaek. The Korean-made line array, subs, and monitor rig were quite impressive sounding. Knowing how things are often done there, it was likely built based on another company's design.