Loudness or high sensitive speakers?


Loudness is used for low volume listening. 
But high sensitive speakers are also said to be good for low level listening.
So either I can have speakers with, say 89dB sensitivity and use a amplifier with a loudness button or just have really sensitive speakers.
And both ways will sound good at low volume. Right? Just as good? Or...? 

simna

I can only offer what I experienced first hand.   I had a large pair of Usher floor standers and even with beefy, mono block amps the speakers needed to played at moderate volume to sound full and have proper bass.   I now have Tekton Lore speakers that are efficient powered by a Rega integrated amp.   Difference is these speakers produce full sound, good bass even at low volume.   Being in my 50s my hearing is not what it use to be and I try to avoid moderate to loud music to avoid ringing in my ears.

I’ve read, at many places, that high sensitive speakers will sound more ”full” at low volumes than other speakers. I assumed it was so. Even pdspeci experiences this.

But if high sensitive speakers are not the solution and the almost extinct loudness button is what to do then?

I don’t understand why ”audiophiles” has cursed the wonderful loudness button that almost every receiver had in the 70s and 80s.

Would it be possible to buy an old amplifier/receiver, take out the loudness ”part” and install it in a modern amplifier?