Do let us know what you think if you get to hear it.I have not heard Robert's gear as there aren't any places in my neck of the woods that have it. I did speak to him a few times via email and we had a very cordial conversation as I was interested in discussing US representation.
I think that his original training ground of Kondo San in Japan, his extreme purist ethos...but also his inclination to be absolutely agnostic as to design approach, seeking only what extreme form of design he thinks suits his sound best...is clear in his current sound.
He started out with SS preamps and the K70 tubed amp...3-box version. And then over 11 years has finally designed extremely powerful (230Watt Pure Class A into 4 ohm) amps which by all accounts are truly Robert Koda hallmarks in sound quality/character. As for design, he moved to SS, but he does not have massive capacitors, instead using his power reactor design, does not have global negative feedback (but still manages insanely low levels of distortion that go toe to toe with major high end names that do)...I candidly do not understand it, but could see the difference between the inside of the Gryphon and the K160s (no, no photos).
In speaking with him and several owners, I gravitated towards his design approach, ethos and priorities in sound. And in speaking with him, found myself more and more interested...frankly blown away after taking the plunge on the preamp. And then going full guns blazing with the K160 monos which have proven to be arguably even more remarkable by the standard they set than his mighty preamp.