I actually communicated with Mr Park directly regarding a Silvaweld phono stage. Before there was Allnic, Mr Park was the brains behind Silvaweld, where he designed and produced many excellent products in the late 90s/early 2000s. Despite the fact that there was nothing in it for him, Mr Park was most cordial and helpful in supplying information regarding my SWH550 phono stage.
I will also say the same, in spades, for Ralph Karsten of Atma-sphere. He is a great guy and a very patient one as well, as he has talked me through a few crises of my own making, because I insisted on modifying his gear. Never once did he remind me that the problems were my fault entirely.