Got hold of Primaluna Prologue 2 integrated with KT88 output valves for use with my Essence, it was certainly interesting, having never used valve amps before it did open my ears to the philosophy behind the Zu speakers designs, so much so I got some Svetlana EL34 output valves and Philips control valves for it, now it is sounding sweet.
Next step is to try out the Zu cables in place of the Mogami I currently use.
Next step is to try out the Zu cables in place of the Mogami I currently use.