I’ve got the Pulsars (non-graphene), and use a BAT VK-33 pre-amp and a BAT VK-235se power amp. Great sound. Whatever amp you get, make sure it’s at least 60 wpc as that’s what Jeff Joseph recommends.
I am looking at possibly changing my Bel Canto E1X amp. It is a nice amp but I haven't tried any Class A, Class A/B, or Tube amps with it. It could also be an Integrated amp. The Pre-amp is a Goldnote DS-1000 mkii deluxe version. Some of the brands I have access to are Alluxity, Electrocompaniet, Accuphase, Goldnote, Krell, Hegel, Rogue, Nad, and Coda. If anyone has had experience with any of these brands and Joseph Audio Speakers I would like your to hear your thoughts. Thanks in advance.