I have kinki amp. Nothing but great communication. Not sure why you didn't go to them in the first place. Didn't you buy it direct? I did.
My experience with Kinki warranty
I wish anybody who has this integrated luck as the after sales support is complete garbage. Been waiting months to get a board so that I can fix a stuck volume control. Today I was hung up on by the rep from Kinki when I complained about not getting the board and then they tried to ask for all of the same info I had given months ago. Todd over at tek audio specialties is the person who is supposed to be in charge of US warranties but seems to lack any customer support skills.
Has anyone else had problems getting support on Kinki products?