Preamp to mate with Krell KSA-50 mkII

I have owned the Krell 400xi, 300iL, and 500i. The KSA-50 sounds better than all of them. I used Transparent Ultra interconnects and speaker cables with both the 400xi and 500i. Transparent cables match Krell very well and many Krell dealers I have seen use Transparent cables on their display systems. I have tried over 100 pairs of speakers (anywhere from $1000-$10000) over the last 11 years and keep coming back to my KEF 's and Energy's!!

My old Krell KSA 50MkII worked very well with an Audio Research SP11. ARC gear serems to work well with Krell amps, and I imagine CJ might as well.

Keep the KSA 50, it is a remarkable amp.

Krell never made a 500i and a system is only as good as it's weakest link so try before you buy if possible and don't forget the power cord issue..transparent MM reference PC's are magical!!