Anyone have Coincident Frankenstein amps?

My experience with Coincident Frankenstein amps is a mix. The amps really sound warm and the clarity is second to none. These characters make listening to jazz, classic and vocal fantastic pleasant to the ears that I would not want anything more. On the other hands, I am disappointed in these amp when I am listening to pop, rock or and some modern jazz. I believe the drum sound too soft and does not reproduce the drum beat well. Drum beats sound flimsy lack of impact.

FYI: I used 300B tube black bottles, speakers are Tekton Lore, and preamps are Lightspeed passive or Dodd buffer.

My source is Oppo 103, set at fixed volume, connected to passive Lightspeed Attenuator before feeds to the Franks. The Tekton Lore can reproduce cymbals like live music, but it seems to have difficult to make the drum snare, tom and kick as live music. I thought it could be my passive, so I tried Dodd Buffer, and it did not improve drum beats, slightly less transparent as the passive. It could mean that a better pre-amp or a change of speakers.

I may try to get a Audio Research LS3 (solid state) or save up for a more expensive pre-amp or different speakers. What are your preamp and speakers that used with the Franks?

Coincident statement is very desirable, but pricey. That is why I want to know other alternative preamps that are likely to improve the sound of drum beats (over Lightspeed and Dodd), but does not break $5.5K