Dynamics at lower volumes?

As with certain tube designs, some Class A designs sound particularly good at lower level. I think it would maybe follow that more efficient speakers are probably better at low levels than greatly inefficient speakers, as they need less juice to open up, but I'll defer to the more technically inclined audiogoners to confirm or disconfirm that.

That's one think I liked about my friends Audio Physics.Some just can sound really nice at lower volume levels some don't.That's one think I like about my Odeon Horns they do sound good at low levels.And as above some electrostatics as opposed to most planars like Maggies and Apogee's can sound good at low volume.
Chazz

I have yet to arrive at :"Dynamics at lower volumes?". My system sounds fab,indeed. I do have to crank it a bit to get the goose bumps. No matter what combinations I have run in the past,it has always been this way.--Meaning it sounds good at low volumes but ever so much better with more volume.

Peter Walker (Quad) maintained that every recording has a specific volume at which it sounded best. Loudness controls are band-aids at best. I use a digital dynamic loudness control that I can program as I wish (a Tact DRC program). It is enjoyable, but does not restore what has been lost by using the "wrong" volume.