Im very very very interested in a krell 2ch integrated amp. But I have also looked into a sunfire classic tube preamp and solid state amp. I can get the krell Im looking at for $1000. I can get the Sunfire Setup for $2000. Is it worth the extra money? I have never heard a tube preamp before. But I love the way the krell sounds. Does anyone know any shops in colorado springs or denver where I may be able to listen to one?