Well, Sean Casey chief Zu designer, cut his teeth on PA spkrs, setting up sound systems for gigs, both horns based and cones based. He grew up w horns, and wrangled PA. He's got a great insight into what makes a great all-round spkr, and this has been distilled thru multiple generations of various models of Zu. What I'm hearing right now is a fantastic synthesis of great open and transparent SQ on classical, jazz and vocals, and supremely immersive SQ on rock, prog, fusion, electric jazz, electronica and ambient, with great mids tone density and flow.
For me I'm realising all the reservations I had w my Zus on acoustic music were a function of a poor TT setup, and stupidly challenging room acoustics.