I know zero about the technical issues being discussed in this thread. I can speak only of my own experience. I ran a Krell KAV 250a with an Audible Illusions Modulus 3A preamp for over 20 years….without a single technical problem. And it sounded great. YMMV
Vacuum Tube preamp with my KRELL KAV 250a, a no no......WHY?
I have an older Krell KAV amp that has been recapped and refreshed. A technician that I respect very much said do NOT use a vacuum tube preamp with my KAV 250, or any other Krell amp for that matter. Can someone with more technical knowledge than myself tell me why I should not be using a vacuum tube preamp with my Krell? Are there some technical specs that I should be aware of when pairing?
Thanks