Pass amps with Tube pre-amps

tried arc ref3, bat 51se, hovland hp 100. All worked well. (Theoretically, hovland has some impedance mismatch and it was single ended.) I prefered all these over the x1.

VTl would be great too

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.