Who is using a tube preamp with your Pass X-250???

I just heard the new CAT Ultimate tube preamp with my Pass X-250 power amp and it did enhance the sound to make my system sound more there and live over my X-1. I would like to know if you have any experience with a tube preamp mated to your X-250. I would really like a tube preamp that has balanced outputs and a remote control. I previously owned the BAT VK-30SE but felt the X-1 was just a better mate to the X-250.

Comments and suggestions welcome.

Happy Listening.