Tube pre + Pass power amp

Just wondering if anyone has had success using tubes (specifically BAT) with a Pass power amp. I intend on purchasing a X250.5 but am concerned about the volume control problems that were experienced by another member.
Why don't you e-mail Audphile1, he has a ARC tube preamp with his Pass X250.5 amp.

Search the virtual systems for Pass amps and see who is running tube preamps with them and contact them. I've done this before, and most audiophile's are polite enough to answer if you are polite to them.

I am using CJ Premier Ten to a great result.
Thanks John - I actually have done as you suggested with very informative responses. However, the results were mixed so I'm hoping to gain a little more information this way.