Pass amps with Tube pre-amps

I have a Pass XA 350.5 with a Sonic Frontiers Line 3 and the combination works very nicely.

Due to the relatively low input impedance of Pass amplifiers, some tube preamps are not what might be considered, ideal matches.

Consult your preamp and Pass reps for specific information.

Good luck.

Disclaimer: Pass retailer

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.