Pls share your experience with Zu Soul or Zu in general

I have had Zu Definition speakers for several years, initially 1.5s then 2s and now Definition 4s. I was not thrilled with the 1.5s, more so with the 2s, and I very much enjoy the 4s. (I also have Zu interconnects and power cords.) But of course, it is all subjective. I listen to a wide range of music from Renaissance Polyphony to Alternative Rock, from full scale orchestra and chorus to solo vocal or instrumental performances; but boring music is boring, and poorly recorded music is hard to tolerate. The Def 4s have the tone and gravitas that I was seeking without being even a little bit fatiguing. I drive them with a good 300b SET. (Lesser powered SETs lacked the necessary oomph.) I have also heard them at the Capitol Audio Fest, the only show that I attend. The music that they play at shows may also influence perception of their house sound. My Def 4s were set up and positioned by Sean when he was in DC for CAF.  I have not heard their less expensive speakers such as the Druid or the Soul (or their flagship Dominance, for that matter). As noted by everyone - even individuals who are not thrilled with the Zu sound - the people who work at Zu are a pleasure to deal with and are happy to share their knowledge and opinions. Speakers should be auditioned at home, even if it is not particularly practical. Showrooms (and audio shows) cannot duplicate the unique environment of one's own listening space. I have loved speakers at a showroom, but hated them at home - and vice versa. Zu is one of a growing number of manufacturers that offers an in-home audition program. 

I had a pair of Zu Druid IV for several months. I bought them second hand from a guy that had them a couple of years

Never could get them to sound good in my room. They have a very loyal following but in my case weren't for me. I only used SS amps, no tubes- but I tried every position and gap I could think of.  (bottom has a gap that can/must be adjusted for bass response.)

Most baffled I've been with a pair of speakers. May have been my room, 15x18 with some openings, or unsophisticated ears...

Owned Definiiton IIs/IVs for 6 years - great speaker, great company. Takes some effort with amplifier matching however. They love 845 type power in SET land or Class A SS like FirstWatt.