What amp are you using with your Zu Essences?

Sorry for creating a bit of a storm in a teapot, but thanks for the suggestions. Currently I'm using a Sharp SM-SX1 digital integrated. And I'm kinda stunned how good it is. It puts out 52 watts per side which is plenty. And they're good watts, crystal clear without sibilance, nice tight bass. I can only imagine how much better tubes are going to be. I'm definitely going to check out the Decware and First Watt suggestions--any more?

Well, I just sent away for a new tube compliment for my LA-Audio 100r. KT-94s produce plenty of grunt (90 wpc into 8ohm) and a good deal of image saturation, which is something that is missing with the Sharp. Less pristine and sweet than the Sharp, I'm betting that Essence tweeter gives a more artful presentation with the LA Audio.

I'm curious to know, why are the Essences considered different from the more typical Zu sound/models. I know they are less sensitive, but how does that actually play out in the listening arena?

After reading up on some suggestions I'd really like to hear the Pass XA30.5; thanks again all--fascinating discussion.

Okay the jury is in for me. The KT-94s in my LA Audio 100r really are beasts. They could drive a truck through a wall. People may say that the Essence is refined, but not with these tubes--my Essences are clearly hard rock speakers now. There's some bloom in the bass that I'm not fond of, but for being as sensitive as they are the Essences really do crave power. A further benefit is that the LA Audio 100r brings balance to the attack; they curb the ribbon's natural etching affect which gets rid of any listener fatigue, but still provides more than adequate detail and transparency as can be got with a Zu product.

The Sharp digital amp I used to run these on really was a detail freak and made taut every bass note, but it's a 5500 dollar integrated 10 years ago and so should do somethings expertly, but it never got the mid-range right, suffering from a dose of sterility.