High-Efficiency Single Driver Speaker System

One of my three primary systems is, as you say, of the "Dark-side" It includes Auditorium-23 Solovox Hommage speakers, a Shindo Masseto preamp, Wavelength Cardinal mono-block amplification, and multiple digital and analog sources. I use this system mostly for listening to solo vocals, solo instrumentals (especially acoustic), small ensemble classical, jazz, and blues, and small-scale orchestral works. The Solovox speakers disappear like no other speaker I have ever heard. The Solovox's PHY-HP driver is a magical gem of a driver. Even after nearly three years now, I continue to be amazed at this system's capacity for allowing me to believe (almost) that the musicians are in the room with me.

1)What type of music do you mostly listen to, and 2)What do you find are the most appealing characteristics that you find lacking in more traditional lower efficient, high power amplifier-based system

1.) Jazz, Blues, Rock, Bluegrass/Folk,Classical, New Age in that order.
2.) Coherence, micro-dynamic expression, transparency, tonal density (harmonic resolution), and macrodynamic resolution (congestion/compression during more complicated music).

Bottom line for me is that the high efficiency crossoverless speakers I've changed to sound more real to me and are far far far more emotionally engaging. Sounds like you have a good amp to mate with one.

As for me.... I am a huge fan of crossover less speakers, ever since I owned the Eggleston Andra I speakers. Now I have transitioned to the "high efficiency" crossoverless speakers (I have the Zu Essence and the Tekton Lores), and there is no going back! I agree 100% with what German says about the sound above...

I listen to Blues, Classic Rock, Jazz, and some Folk, and I have a real penchant for all things guitar, piano, and vocals.

In addition to above, these single driver speakers have a speed about them that makes everything sound so real, and less electronic (with the right amp of course (SETs for example, but also well executed push pulls using EL84s or EL34s, which are my preferences).