Over the past year and a half I've struggled mightily to extract bass from these speakers despite using many different amplifiers ranging from 8 - 250 watts (and 300B SET, Class A, OTL, and Digital topologies). Adding in the Daytons on the subwoofers was a revelation that finally allowed me to hear them as designed.
I'm using a 25W DIY First Watt F4 (or SIT3) on the head units and the 500W Daytons on the subs and they finally sound like the reference speaker they're supposed to be... and I am not losing imaging coherence as I have in previous attempts at biamping. The adjustments on the sub amps have allowed me to nicely dial them in for system matching. Not a ton of Coincident PRE owners out there, but I think anyone with this speaker simply must try out the amps to see what they're missing/getting with their current amplification. The 45 day trial period makes it risk free.
Thanks for posting Duke, I so appreciate what you bring to the community.