Anyone know Ultra Fi Sebring 300B & what preamp?

Been using a Larry Moore Sebring 300B and it has absolutely captured me. I've owned some good amps over the years and this is certainly my favorite.

For the time being I've been using Channel Islands VPC 1 for volume control and even though it seems to be an excellent match, I'm wondering if anyone else has or knows this amp and what you are using (or suggest) as a preamp - vc.

Thanks for any comments.