IMHO, I've never heard a Krell preamp that I liked, YMMV!
Before you buy any of the preamps you list I would suggest you take home a BAT VK50SE. I've yet to hear better in my system and I took home and demo'd quite a few, including the 380S and the Spectral on your list.
Paul
Before you buy any of the preamps you list I would suggest you take home a BAT VK50SE. I've yet to hear better in my system and I took home and demo'd quite a few, including the 380S and the Spectral on your list.
Paul