I know this is also a late replay.
I've owned a Classe-CA100 amplifier for 16 years and have also a Goldmund Mimesis 27+ preamp. The Classe is pleasant sounding with a slightly dark in nature sound that is absolutely comfortable and enjoyable to listen to. It has plenty of power but provides a nice relaxed yet still engaging sound. I my experience, it does not have much of the sonic harsh edges that may be found more in amps that push an analytical, extended nature. The dimensionality of the sound stage is very good but not as good as some more expensive amps of course. However, I fully appreciate the Classe sound. The amps does vary significantly depending on the preamp that it's mated to. As for the Goldmund, mine is a higher end preamp but I think it is generally represents their character. It has great strength in transparency, impact slam, purity. it has a strong bass foundation and a very transparent midrange that is still full and rich sounding. It is not quite as extended and airy in the high as my Ayre preamp but it excels in dynamics and body meshed with transparency and imaging. it is not as neutral as my Bryston preamp but I feel when compared with the Bryston, the Goldmund give a fuller, more complete sonic picture on a clean background. Both Classe and Goldmund have their strengths and many people enjoy their aspects, I'm sure. it just depends on what you like. I have also tube amps and preamps and comparison to these solid state amps is a different story. I live in New England. The only other person I know who knows Goldmund very well is the owner of Natural Sound in Framingham, MA.