Yep, above posts state very well the need to optimize full system to hear full potential of horns. I've heard horns sound absolutely shouty and furthest thing from natural to absolutely sublime, every single aspect of system matters with extreme level of resolution, transparency available with horns.
From the very first time I heard completely stock Klipschorns in my system I knew they had potential to be last speaker for me. For me the Khorns have been like a blank canvas on which I could assemble or draw a subjectively perfect work of art. Apart from components, every single little part I've changed out in multiple components, therefore, wire, capacitors, inductors, resistors has been chosen to best present an easy to believe illusion of live performers in room. Horns are amazing in this regard!