Wow. I got offered this Esoteric unit at a relatively low cost by a local dealer.I have tried the Focal arche amp and Naim. But the best I have heard straight out all-in-one for the Utopia is the Esoteric N-05XD streaming DAC's headphone output. It is really at another level with Esoteric's proprietary r2r dac. The dynamic and punch of the bass is really at another level, strings are also so dynamic to a point that you can feel them plugging right next to your ears. Obviously, there are some Esoteric coloration to it, but it is so nice.
Was and continue to be too enamored with my Holo May to buy it blind.