I would certainly check the archives of Audio Asylum before I'd match a BAT Pre with a Krell Amp.
I tried a Spectral Pre with an ARC VT130se & it didn't work IMHO. I ended up with a BAT VK30SE and an ARC VT130 and a pair of Coincident Super Towers which seems to work.
I tried a Spectral Pre with an ARC VT130se & it didn't work IMHO. I ended up with a BAT VK30SE and an ARC VT130 and a pair of Coincident Super Towers which seems to work.