Does anyone know?

Hello
This is my first writing on the forum. Who knows this preamp or heard anything.
It is Sohn No.63.
Made only 100 pcs. and all of them are sold in USA.
Made in South Korea. Basic construction from Rossner&Sohn.I know only that.
Thanks for everyones help

photo

http://www.audio-kontakt.com/index.php?page=view_ad&id=18455