Coincident Frankenstein mk.2 amps

Cal,
On  paper the Coincident Eclipse line and the Victory line of speakers had very similar specifications. In reality the Eclipse models were the easier to drive speakers. I believe that they had
1 higher ohms (load impedance).
2 Probably simpler crossover design. I can confirm the crossover in my Total Eclipse II are quite simple/minimal. The music JUST flows and fills my room when driven by the Frankensteins. One of Israel’s best speakers ever IMHO.

No question the flagship Pure Reference Extreme (PRE) is a superb speaker but requires more power than the Eclipse. Perhaps the Zu Audio speakers are more similar to the Eclipse in terms of ease of driving them. This would be fantastic for tswisla.
Charles

Well, the Frankensteins arrived and I have been listening to them for 12+ hours/day for the last 3 days. I can confirm that they are truly wonderful. They don’t seem to be missing anything. My Soul Supremes arrive Wednesday and I can’t image what I will hear as it sounds wonderful right now.

tswista, 
Congratulations on acquiring the Frankenstein mono blocks. I'm happy to read that they're sounding "wonderful " in your system. I suspect the pairing with your incoming Zu Soul Supremes will be a genuine example of music listening bliss.
Charles 

The Supremes are arriving today.  I wanted to add to my previous post as I was rushing and merely wanted to give an update.  As wonderful as the Dynamo was, the Franks are a huge upgrade.  What stands out the most is the perceived power, but the soundstage is enormous and all the instruments have more weight.  Dynamics are simply amazing.  Stop/starts in music are incredibly sharp and crisp.  Everything comes from a silent, dead black background.  Goosebumps are a regular occurrence.  I wanted to ask if there was a consensus on tubes.  What 300bs and rectifiers are being used?  I had a suggestion for Black Bottle Psvanes from Mr. Blume as well as a Mullard CV 378 rectifier.  I'd love to hear what everyone is using.  Thank you.

I copied @charles1dad and got the Mullard's and eml xls 300bs. Loved that combination.