Even if you aren’t going to listen loud, higher efficiency translates to better micro and macro dynamics even at lower volumes.
I agree with the above statement @ozzy62!
I don't think you will find a true high sensitivity, 8Ohm speaker, for $1500 a pair, if you did there would be no useful output below 55Hz. With that said I do like Zu speakers, but, 1500$ for a pair? OMEN DIRTY WEEKEND MK. II maybe. To me high efficiency is 2.7% or higher, remember efficiency is not the same as sensitivity. See below efficiency and sensitivity ratings.
Mike
Loudspeaker data | |||
Efficiency | Percent | Sensitivity | |
0.2 | 20 % | 105 dB | |
0.1 | 10 % | 102 dB | |
0.05 | 5 % | 99 dB | |
0.02 | 2 % | 95 dB | |
0.01 | 1 % | 92 dB | |
0.005 | 0.5 % | 89 dB | |
0.002 | 0.2 % | 85 dB | |
0.001 | 0.1 % | 82 dB |