Ah, Zu Audio, ever the chameleon, albeit with a distinctive color. At the California Audio Show last August, Zu paired their loudspeakers with gray-tinged tube electronics that toned down their sometimes metallic leading edge; at RMAF, with Peachtree Audio’s Grand Integrated ($4500), whose design let the true nature of Zu’s Druid Mk.V loudspeakers ($5200/pair), Submission sub ($3995/each), and Zu Event cabling, emerge in the best possible light.