Man this thing is small. Sitting next to my Fiio E7+E9 combo, it takes up way less desk real estate. I'm looking forward to going portable with this.
My 600 ohm Beyerdynamic DT990's can be driven louder than I care to listen, although the E9 definitely goes louder. A quick A/B comparison with my Fiio rig shows the UHA having a much richer sound with way, way more air. It totally opens up the presentation.
Really excited how this amp will play with my Merlins!