Some room info: The room is 13' wide and 21' deep, with 8' ceilings. My listening chair is about 10.5' away from the speakers.

I've been using a Marantz 2265B and listen to 99% vinyl in this particular setup.

From above "Focal towers usually have a low impedance and electrical phase angle that requires a good amount of current for bass."

This is possibly the answer to your question in the Torii Jr for sale thread.
His speakers have an extra woofer (3) and is even more difficult to drive than yours.

From Stereophile's test measurements of the 936:
"The Aria 936 is specified as having a nominal impedance of 8 ohms and a minimum impedance of 2.8 ohms; my measurement (fig.1) confirmed the minimum value at 108Hz, but as the impedance stays below 4 ohms from the upper bass though the lower midrange, where music has high levels of energy, I would recommended using a amplifier rated into 4 ohms with this speaker."

High power/ high current solid state amplifiers tend to work better with speakers like this.

Based on your use of and being "pretty happy" with a Marantz 2265B which is neither high power or high current is the reason I feel that any of the push pull amps should work with your speakers.

Is that 2265B updated?

I had my 2226B completely gone over the Tom the Catrafter over on Audiokarma. Everything was replaced inside.