is McIntosh known for good dynamics?

@steve59 Damping factor, typically is an indicator that an amplifier has a low output impedance, generates high current and can drive more reactive speaker loads and is also less likely to have variations in frequency response as a result. Mcintosh uses autoformers which mitigates those effects and allows their amps to drive any load to full power. 

My Mc611's have a low damping factor of 40

@steve59 No speaker made needs a damping factor over 20. Additional damping factor (which is a measure of output impedance) won't give you any greater bass impact.

I can appreciate that!

Who here is it that stated the Focal Sopra 2 is 98 db efficient? Focal specs them at 91 db. Most amps would be able to drive a 98db efficient speaker, although they have a measured nominal impedance of 8 ohm, and a low of 3.1 ohms. Just a friendly fyi. MrD.

My error. They are very efficient, I rarely exceed 3watts on the music I generally listen to.  Once, after after a glass too much red wine, playing an SACD of Roger Waters, “Amused to Death” it was going bouncing over 30W, and that was Loud !!!