Hi Guys. I'm a long-time head-fi lurker. Firstly, I'd like to thank all of you here who have helped me spend my cash. I'd be considerably richer without you. Most of my headphone listening is done via a Hisound Studio V, usually with M-audio Q40s or Superlux HD681 Evo's (until the left channel developed problems). I'm very intrigued by this Android-> USB DAC 'craze', so decided to try it out. I recently bought a ZTE Nubia Z7 Max. I have an unused Behringer UCA202 lying around, so I hooked them up and got it working without any problems. I tested it using the Kenwood music control app, the Onkyo HF player and the stock music player. All of these worked fine. The Onkyo HF player has a nice 11-band graphics EQ if you like that kind of thing. I was pretty pleased to have got this working so easily, but the UCA202 seems like a POS. The headphone out on it is especially bad. I struggled to get a decent volume out of my Q40's even at max volume. The headphone out on my phone sounded better. I then hooked the line-out of the UCA202 into my Fanmusic mk2 headphone amp. Whilst far from mind-blowing, this sounded a lot better. Finally I did a quick A/B test with the phone/uca202 and the dugood hdap-01 both plugged into a nad c355bee amp, powering some monitor audio bronze bookshelf speakers. The hdap-01 wiped the floor with the uca202, which should really be expected considering the price difference. If anyone's on the look-out for a phone to feed a usb dac and like bargain-hunting in China, check out the ZTE Nubia. I has a nice screen, pretty good camera and the all-important smooth swipe action. I picked mine up for under 250 british pounds on aliexpress, with shipping in under a week.