Krell KRC-3 or Pass X1 Preamp

Just for 2-channel, any opinions on sound quality, reliability.....
Fed from theta gro gen 3 balanced, going to krell ksa-250 amp.
I just sold a passive pre and want to try something different and these are on the short list.
I had the Krell KRC-3 for nine years, it's a great preamp. They say that it's a classic!

That said, I've never heard the Pass X-1 but would believe that it might be better.

Hopefully someone with experience with both will be able to answer your question.
I owned the Krc-3, one of the best kept secrets in high end audio. I highly recommend it. Unfortunately I've never listened to the X-1.