Pass amps with Tube pre-amps


Is anyone doing this..Pass amps with a tube pre-amp?If so what pre-amp have you used?Thanks
spaz
I run X250,5/Revel Salon with CJ Premier Ten and with ss Premier 18 for different sound but overall tubes are better
I run Pass Labs X250.5 with Audio Research LS-25 linestage, balanced.
Sounds great. No issues.
I did call Pass Labs and spoke to a tech there before buying the amp just to make sure there were no problems running this combo and gave all the specs of my preamp to Pass Labs tech. He said that my ARC preamp should be an excellent match with the X250.5 and as far as I can tell, he was right.
Excellent results, no problems, with Pass X250 and ARC LS25mkll and also ARC LS15.
The Joule 150 MKII is able to drive relatively low input impedances, but it is single ended only and it seems many Pass owners prefer to connect in balanced mode.