Thanks for fast response!
I won't use the FiiO's with USB, but with S/PDIF only... for the moment anyway. Power supply for the E17 will come only from the E09k's DC source. I'm still waiting for my beyers to arrive...
So the E17 ONLY charges if the USB Charge is set to ON, in both cases, docked and undocked to the E09k. When I turn the E09k off, the docked E17 does also. Please correct me if I am wrong.
Now, how is it if USB Charge is off and the battery goes empty while it's docked. Does the E17 turn off, or does it get power from the E09k?
What I actually want to ask: How can I use the E17 with the E09k WITHOUT making use of its battery? Maybe I should remove it? I want to conserve the battery life and just make it 1-2 times per month empty. Like said. I'll use it only at home with tie E09k.
It was purple, but after I changed the USB Charge setting, I noticed that it can turned to blue.