non-os DAC power supply..

Hi there,

I'm planning to build a non-filtering DAC with the TDA1543 and CS8412. Although I didn't start to build yet, I'm buying all kinds of components now. I allready purchased the LM7805 and LM7508 voltage regulators and simple diodes for the power supply.

Next is the transformator...
As I am intrigued by the sound of the 47labs Shigaraki DAC I'm wondering how THEY build their power supply? Does anyone have ANY info about that? I believe they don't just use a transformator and four diodes..but what do they do....

Btw, this is my first DIY-project....you know what that means ;)