For my project, I use a AC/DC converter (230v > 5v). A friend of mine mentioned that many AC/DC converters put out high frequencies. So a possible cause of noise and hum. He advised to change the one I am currently using (this one) into this type.
The model that fits best is the 5 volt/2 Amp version.
The Acrylic manual for the Up2Stream Mini mentions “Warning: Up2Stream Mini must use 5V-1A DC input, higher voltage power supply may damage the board”
Does this mean that a 5 volt/2 Amp power supply is ok?