@soix:
I've been listening to the Hegel with the Silver Reference IC's. The sound can be a touch bright with some CDs and given that 1) the Hegel is much more resolving than the Wells and 2) I'd prefer more warmth if I can get it and still maintain the same resolution, I can't help but wonder whether trying the Matrix or Absolute Coppers wouldn't constitute "due diligence".
@barrysandy:
Thanks so much for your descriptions. I read a comment on another site that concurs with your characterization of the Matrix. To my ears, the Silver Reference were just right for the Wells and Aqua DAC but each to his/her own. Looks like borrowing some Absolute Coppers from the Cable Co's lending library will be my next step.