What about a tube integrated? I just purchased an all tube integrated, a Graaf GM50 with my Verity Parsifals (original). Graaf are well known for their OTL amp designs, I believe Verity's loudspeakers were presented at various shows with Tenor Audio OTL amps driving them.
The GM50 drives the Parsifals easily for a 50w tube push-pull design. It's a really sweet and refined sounding combination with a black background. Voicing is lifelike. My source is a McCormack UDP-1 Deluxe.
Other tube amps suggestions include the Einstein The Absolute Tune integrated (50w per channel, see Soundstage review), perhaps a higher end hybrid from Unison Research, a Pathos TT (30 watts Class A may be adequate).
I cannot comment on the Pass or Dynalab. Sorry. As far as ss amps, you may consider the latest Rowland Continuum 250 or 500 integrated amps. Some folks feel these better the Pass INT-150.
Good luck in your decision, lots of wonderful choices.