Have been driven the latest Parsifal Encores with Pass X350.5. Agree with the comments above that they need power. I had some discussion with Julian at Verity and he had indicated that they are fairly easy to drive. I tried my other amp, Pass Aleph Os (40wpc) and it could not do the job. So back went the X350.5. I had been using a pair of Discovery jumpers from Verity and I think that contributed to the darkness indicated in the post above. I just switched over to a pair of Nordost Norse jumpers and it opened up the highs. All my interconnects and speaker cables are the Synergistic Research Reference X2 series. A recent change of tubes in my phonostage (ARC PH-3SE) and linestage (ARC LS-25 Mk I, GNSC Ref mod) from Amperex Bugle Boys 6DJ8s to orange & white label Amperex PQ 6922s also improve the highs as well.
FrankC
FrankC