Listening at very low volume

Having owned many different speakers after 30 years of audiophoolishness, I own, for the first time, a pair of very efficient speakers. My Zucable Definitions are 101db! I have never been able to listen at such a low volume to music and experience the micro detail that I can with the Defs. Maybe it is because I'm getting older?--the fact that I enjoy listening at such ridiculously low levels? Of course, I can still go to earbleed levels with some good Marley, The Stones and the like, but the satisfaction of a four string bass in a jazz trio, quartet, etc. at low volumes was never in the equation with my previous speakers. The combination, as well, of SET with this efficiency is quite incredible. There are oodles of other wonderful characteristics regarding the Defintions, but after a long listening session last night, I was so taken back that I was not itching to crank my rig up because I was missing things. Anybody relate? peace, warren :)