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One power supply for Raspi with DAC2 HD or Digi2 Pro

I would like to use one power supply for Raspi 3B+ with DAC2 HD or Digi2 Pro (5V/3A) AND for a pre-amp (12V/1,6A). I would put them in one case.

I would power them with one 12V power supply with Y-cable. I would reduce 12V to 5V for Raspi with this:

https://www.reichelt.de/entwic…0H6ey1cybfzhoCoy0QAvD_BwE

Would it not affect the sound quality of DAC2 HD or Digi2 Pro having them attached to the same power supply? I of course assume that the power supply has enough power (A) to power both of them. The power supply would have at least 35 Watt Power (12x1,6 + 5x3).

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