I bought the ASUS ZenPad, great little Tablet. Hell of a time getting full specs out of the manufacturers. What type of DAC was the main question. But would be nice to know Headphone output/Impedance. Did the unit have OTG and USB Audio. Contacted ASUS, they fumbled for an answer and then came...

I'm looking for the exact same thing. 10" with a focus on the audio performance. So far I've found Sony Xperia Z2, Surface 3 4 gig / 64 / 128. Lenovo yoga 3 pro, and the Asus Z580CA-C1-BK. The Sony specifically sells the HR audio quality. A couple with advanced Dolby, so figure a little more...