Innersound ESL 300 Mark II.

Hello everyone.
What is the best preamp for my amp? Looking for something older with XLR IC, possible tube preamp with remote. Sound stage with depth behind speakers, it is what I'm looking for. Sound reproduction is very important to.
This amp is very picky, each time I change something in my system, I have extreme differences. Possible that there is more problems in my system.
I realized, that I need help from you guys :]
My system;
- Rega P3, SME ser.3 arm, Shure ME97HE/Pickering XSV 3000 cartage.
- Bellari 129 phono preamp.
- Sonic Frontiers SFCD1 CD player.
- Krell KRC-3 preamp.
- Innersound ESL 300 Mark II,or modified Radii Audio MMSKT88 mono blocks.
- Thiel CS 3.5 speakers.
- Transparent cables.

"It's the journey that's most fun ........... not the destination."
Good Day. Greg.