More power for better sound at low volumes?

My old Quad ESL57's were champs at low volume, so I have to disagree with Tmsorosk.

Anything you can do to lower the noise floor should help. Do you use any power conditioning?

Why is everyone assuming that noise is the biggest issue at low volume? I would think it is the lack of dynamics and bass.

I'm no longer sure what folks here believe the issue is evidenced by. FWIW I measure the low level resolution by the height/width/depth of the soundstage.

Tmsorosk, FWIW I agree with you in part. My experience with electostatic speakers (Quad 63s and Accoustats) which I used over 8 years, support the observation in you first sentence.

Where we part ways is in the second sentence. For example my Silverline Boleros (92db) sensitivity have excellent low level clarity and create a fully dimensional soundstage at SPLs in the low-mid 70's when driven by low power tube amps or high power tube amps. I believe this is not unique. To further contest your statement I owned Paragon dynamic speakers with a 86db sensitivity, 5ohm min/8ohm average impedance, that when driven by 160 tube watts still did not open up until you reached the 80 to 85db spl level. A big difference, for me at least. Think crossover issues perhaps.

I have noticed better low volume sound as the efficiency of the speakers goes up.

... and i think i have also noticed that low efficiency speakers tend to sound better at higher volumes than high efficiency speakers. I could well be wrong of course. Others here have wider experience than me.