Quote Originally Posted by Qwin View Post
Calling all you guys with Paul Haynes power supplies.

Where are you feeding the power into the RPi ?
Into the stock power socket?

Reason I ask, is there is talk of nasty power switching and protection circuitry in the Pi itself that is best avoided.

Folks using the Hifiberry digi+Pro top hat are feeding power into that board which then supplies the Pi instead of the other way round, its supposed to work better this way by avoiding said nasties. They are also splitting the input to 5v and 3.3v for the digital and analogue elements in some DAC boards.

I don't know if any of this is possible on other spdif boards or DAC boards, but I'm putting the theory out there FYI.
I used to use the micro usb socket with the supplied adaptor. Recently I changed to using pins 1 and 5 on the GPIO header. I also use an Audioquest Jitterbug in between Raspberry Pi and USB DAC.

Regards

Cyclopse