which power supply for raspy+topping?

[Jandu]

hi all,
iam trying to set a clean source of power for my raspy4 and my topping e30.

Iam thinking about a power bank , powerfully enough to supply both of them.

Does anybody already tested it? Could i know, please, what you used or recommend?

thanks in advance.

UPDATE: i see Raspy need 5,1V 3A  and Topping  just 5V 1A

simply speaking...could i use a powerbank of 5V 4A?  Could i use it just only for Topping? thank you

I have used a power bank for RPi4 and it works. Normally, after the RPi4B is booted up and running, it takes less than 1.5 A for power draw. Some may even say it takes less than 1 A assuming you have not much power drain from your USB ports. 

It also works with a Topping D10 DAC. I don't know enough about Topping E30, so I cannot comment on that one.