OTG Y Cable with Power to Samsung 8 Tab

[ripblade]

I'm trying to find  OTG Cable with a Y connector that can be used to provide power to a tablet and a USB Connected DAC (Dragonfly Red).  I have tried one that provides power to the DAC but not the Tablet.  The connection I would like to have is OTG to tablet.  A Y connector (with a Regular USB and female Micro USB) on the other end with the DAC in the USB port and the regular Tablet power connector connected to the other Y connector (Female Micro USB) to provide power to both the DAC and Tablet (in this case a Samsung Galaxy 8 Tablet).

Thanks for any help

I'm interested in an answer to this as well, though I'd also like to know if some kind of handshake is done for the app to sense the presence of a DAC, or is the grounded Sense pin of the OTG cable all that's required?