I agree with the comments that the 3010 is not remotely bright. I own a 3010s2 pre/power, as well as a bunch of older Exposure gear, some EAR valve amps and others, and the Exposure amps are a little on the warm side - not bright at all. And neither are the Spendors. I suspect those DNM cables are the culprit.
Try some inexpensive van Damme or Mogami cables.
Try some inexpensive van Damme or Mogami cables.