I’ve had a Krell Illusions ii, Zesto Leto, Coda and now the PS Audio BHK Pre. Synergy is so important, my amp is a Krell duo 300xd. I also tried a Lumin P1 to use as an all in one solution, pre, streamer, DAC. My favorites are the PS Audio and Coda. LTA makes outstanding gear and I’m sure there Pre’s would be a home run, again, assuming it pairs well with your amp, gear. Suggestions on looking at a Mac pre make a lot of sense. Aric Audio if you are looking for exotic, custom, high quality but made right here in the USA should be on your short list. If you search this forum and others, you’ll find many raving about the gear, owner builds and designs all the gear, will do custom builds.
Good Luck,