What do you mean by, "the converter up there?"
Is that an iPod Classic or iPod Touch 5G? If it;s a Class, make sure that it does USB Audio, the Touch 5G definitely does as I use one.
Don't know what you mean by "power."
The E18 DAC does not draw power from the USB source and I find that it does not need a powered USB HUB,
My desktop DAC does draw significant power and requires a powered USB Hub.
Without a powered USB Hub:
- My Verizon Samsung Galaxy S3 burns out as in self destructs and requires replacement.
- My iPod Touch 5G pops up a message about power requirements and refuses to operate unless a powered USB Hub is introduced in the connection.
I have also used by GS3 with a split OTG cable powered by a USB wall wart. If one uses a Hub that will pass through power from the phone if the Hub's power source is disconnected the phone will fry. Other phones do not seem to have this problem, Caveat Emptor.