Hi Maniac,

I think that most people are setting the PSU without load.

Remember that you have a diode and a few tappings from the 15.3v voltage you have set the PSU at (and the 15.36v will be without load). I think that if you have the PSU connected and the DAC powered up and then read the voltage directly in front of the 12v reg I bet that you are well below the 15.36v you set. You may have to turn the PSU up to achieve say 14v at the reg.

Regards