The Coincident Total Eclipse II were built from the ground up to be very compatible with tube amplifiers and this includes SET amplifiers (Thus the high 14 ohm impedance and 94 db sensitivity), The other aspect to ensure successful pairing with tube amplifiers is the tuning of the woofers. So the chosen Q factor was addressed to provide sufficient damping and bass control.
In my opinion Coincident got this 'very right' excellent control without being overdamped. I've used 3 different tube amplifiers, 100 watt push pull KT 88/ 40 watt push pull el 34/8 watt SET 300b. No issues whatsoever with any of them.
I also have used a loaned Lamm 90 watt push pull amplifier and a First Watt S.I.T ( 35 push pull D.I,Y. version). The bass control, impact and texture was really good with each despite their distinct sonic signatures being easily preserved.
In general terms I can say that the Coincident sound is high resolution/low degree of coloration/very open presentation. With good placement the speakers seem to disappear from the room (Depending on the recording in use). Definitely high resolution and clarity but thankfully not analytical or clinical sounding by any stretch.
The Super Victory III with the ribbon tweeter could be perhaps more resolved than my speaker with the soft dome tweeter (But perfect for me😊). One more comment, the musical pace and flow characteristics are very fluid and natural. Definitely not a stiff or mechanical type of presentation. I hope that this helps somewhat. I've had the Total Eclipse II for over 12 years and they along with my 300b SET mono blocks are not going anywhere.
Charles