Problem with usb E1DA Powerdac V2

[3dcnc]

Thank you. When I said portable. I just wanted 1 AC power supply to power the Raspberry 3 and DAC. I was never planning to use a battery. I am not fully electrically proficient , so I could not calculate how many amps I would need to power both using 1 supply and a power splitter cable. The idea was to keep Moode and all my music on a micro SD 128gb to keep the the USB peripheral's to a minimum connected to the Raspberry

Thank you Mike for the links, I will check them out.