Hi Mr. Ribbon,
I have that amp, KST-150.
So far I have only heard it on Mark Danial Aragon speakers, a/b sessions compared with Eagle 2c. one afternoon in Denver.
The music was mesmerizing with the Luminance, flowing sweet transparent highs, midrange and firm bass.
Those speakers are 4 ohm and 85db sensitivity I think, and have the reputation of being power hungry
as I understand it.
As a musician I have to say that the emotion of presentation was wonderful for a wide variety of demanding musical cuts. Mui Goosebumps! We listened and time passed unnoticed!
I only see sparse comments most audioweb sites, but Sam Telling gushes in May Stereophile, for what its worth.
Private mail me for more if needed.
Rod