Damping Factor vs speaker sensitivity

Damping factor is pretty much meaningless unless one is talking about a tube amp with extremely low damping factor, like around 4 or less.  Beyond 8, the numbers don’t really matter that much unless the speakers have a really low impedance.  

theaudioamp, I have already seen >900 DF on a Hegel publication. Looks like they changed the way they measure it?

mike_in_nc, May be a greater smoothness give the impression that the high frequency did not sparkle as it is suppose to be, for my taste ?

A high damping factor (DF) is indicative of two things

The amplifier has a low output impedance (Which is inversely related to DF).
Generous application of negative feedback (NFB).

I have yet to come across a reasonable explanation as to why a DF of > than 40-50 or so offers any meaningful sonic benefit. I agree with the comments/perspective of @larryi above.

Charles

@audiosens 

Yes technically an amp can have a damping factor that is very high as it is measured at the amp terminals.  I was listing all the parasitic values in a system between the amp and speaker driver that makes this value meaningless.