So iFi guys,
If the micro iDSD spends the vast majority of its time on my desktop plugged into my iUSB Power, should I just turn it on after the computer and all are started up (to run in bus-power mode) and then just leave it on after that? (no matter how much turning the computer off-and-on I do?) From what you said that would provide the best battery life, correct?
Also, when running in bus-power mode, will the headphone amp also draw on the battery when needed for power output, say in Turbo or Normal mode?
If the iDSD micro is plugged into the iUSB Power just turn on after connecting and leave both on, regardless of the state of the PC.
This way the battery will be maintained at optimum charge for "float" (aka standby) operation.
And yes, the iDSD will draw on the battery whenever it needs more power than provided by the USB port, to make up the shortfall.