If someone (like me) have problems with Windows Drivers and ODAC working you can use this Tenor TE7022 drivers set, that works!   If use ASIO please go to this web site download Asio driver: http://www.ab-system.hk/product_driver/usb3pkg_v0p7p3p2a_20100401.zip Teralink X2 Win7 64bit...

ODAC + O2 combo portable mod As currently there are plenty of mobile phones/tablets http://forum.xda-developers.com/showpost.php?p=27631058&postcount=10 and Apple devices supporting external DAC output it makes sense to issue a version of ODAC + O2 portable combo that can work from 9-8.4V...

ODAC + O2 combo portable mod http://www.head-fi.org/t/616331/o2-amp-odac/45#post_8527670

Here it is, you don't need to wait. Nook touch is just $60 on eBay other tablets are more http://www.head-fi.org/t/595071/android-phones-and-usb-dacs-how-to-increase-the-issues-priority-with-google/75#post_8469189  

Quote:   what about comparing it to ODAC+O2?  

Quote: you Also can use  external DAC with other portable devices such as Galaxy S III $700 Android phone ARCHOS G9 $250+ Android tablet (looks like the key is OMAP chipset kernel drivers) Squeezebox Touch $250 - propriatary logitech linux box Ainol Novo 7/8 Advance 8gb 100$ Android...

Here is a what I found on USB AUDIO output with Android (maybe it makes sense to put and update this table to the first topic) NOTE: as of now SOME (not all!) USB AUDIO Android support implementations stream data through Android MUX that disturbs the original PCM stream for changing volume...