Which preamp to go with pass labs x150.8

+1 for Aric Audio. I'm using his Super 6SN7 (with upgraded PS and volume control) with my Pass X30.8. A great combo and big step up from my previous preamp, CJ CT-5. Aric has great customer service and can taylor his preamp to your needs.

Good luck

+1

@swarksone

Okay, my .02.

While my equipment is different it might be revelant, I currently have a Pass 260.8 and run it wilth an ARC 5se. Before that I also used a ARC 28se (which is currently running with a ML 23.5)

Have always liked the sq of the mix of tubes and ss and had tried a number of tube and ss pre with these amps until I got to my current rigs. Not even considering a upgrade of either, but you never know when the bug will bite... 

Audio-gd Vacuum HE1 XLR Tube Preamplifier Review - HomeTheaterHifi.com           For the money...This Monster Tubed pre could well be the most musical pre under 10K

+2 for Aric Audio. As I’m typing,I’m listening to Aric’s Motherlode II,and a First Watt J2.  I find the combination pure magic.