Has anyone heard the NAT Utopia preamp


I was wondering if anyone has heard this preamp? I read the review of the Plasma in Tone. I was wondering how the big brother of this preamp would perform in comparison to the Plasma?
Convert?fit=crop&h=128&policy=eyjlehbpcnkioje1mdu5nzi5mdcsimnhbgwiolsicmvhzcisimnvbnzlcnqixx0%3d&rotate=exif&signature=69c8ba1f679a7c8c02589dd13b2c4b4d1b149492471d772b6f5f724e47f160d9&w=128baranyi
I have the Plasma preamp in my system along with the Se2se mono amps. All I can say its one of the best I have so far. Its slightly on the warmer side but its got fantastic dynamics and bass response. I like its signature. Definitely you should audition it.
I have not hear any of the other preamps.