Goldmund mimesis 9.5 and Wilson system 8

Hi, I am auditioning a Goldmund mimesis 9.5.

I really like the sound of this amplifier. Powerfull and detailed but I'm no audiophile. I cannot find any literature on the amp. at all. I think it may be a peach but not sure. I would like some recommendation of other amps (solid state) of similar quality from those in the know (ML / Krell?)

Im concerend the amplifier is getting a little long in the tooth and maybe should be buying something a little newer, but there are rare and hard to find.

My budget is about USD 5k. Used, High End well maintained is my preference.

my system is 60/40 multi channel 2 channel

Classe ssp600 pre pro.
Wilson System 8 / Cub centre / bw 805's rear
Goldmund Mimesis 9.5
Theta Dreadnaught for centre / surround
Esoteric UXPI for digital

Cardas Cross for int/ speaker.

Any comments regardign the Goldmund with Wilsons or other recommendations would be hugely welcome as I am a new comer to high end audio.

Thanks,

Rob