Do forget all you have known about dynamics. No, I mean all. The one who has heard the Everest, must forget some believes. For example, that pur power and fine dynamics exclude each other. The JBL can both in absolut perfection. Fulminating Heavy Metal like Dream Theaters "Awake" will be mastered with concert level, just as well the nuances of level differences in the piano trio of Schönbergs "Verklärte Nacht" (Antes Edition) are followed just as by a high end small monitor (Kleinmonitor).
Another dogma that melts away after a listening session with the JBL, is the fairy tale of horn colorations. There arn't any, the bolide (?) keeps dramatically forced voices in Wagners "Ring des Nibelungen" (EMI, Haitink) just as clean as a well respected high end speaker a la Backes & Müller BM 35.