Hoping my order comes with the appropriate power supply. If not, looks like the vendor will make good on it. For reference on my Amazon order from Hifi Booster Store:
Thanks for your order of the A30. I send this message to you in order to tell you that your parcel may be only included European power cord, but not have US power cord. This is due to an error in the packing process.
Don't worry, Please take a photo of the power cords and send it via the attachment to me. We have two options for you to choose.
1. Leave us your address, We will arrange staff to deliver the US power cord to your home from US.
2. If you have the power cord, no need us send you again, we can give you $5 refund as compensation.