You are not alone. Buyer beware is indeed an appropriate suffix to the topic title. I too bought the UMCP2 under the impression that it will work with Android L.
There's another thread about this here:
viewtopic.php?f=395&t=33803Seems all the "professionals" posting are completely content with mono, let alone the poor quality of most of the embedded audio devices mentioned.
Do not be mistaken, the audio interface of the UCMP2 does NOT work with android, full stop.