Building a power supply for ACP+

Dear fellow DIYers!
I have built an ACA into an old Mac G5 (cheap aluminium) and an ACP+ with it. Now I borrowed a BA3 with "real power supply" and find it such a great improvement that I was wondering how I could build a power supply with toroidal transformer myself (for ACP+). Can somebody help me out with a BOM or guide or so? I'm quite new to building. Also I was wondering whether it might have to do more with the BA3 Vs. ACP+ or rather power supply? Thanks in advance for all your help!
Kind regards,
Johannes
 
The diyAudio Store sells a (bare, unpopulated) circuit board they call Universal Power Supply . It is very well documented, including a step by step photographic Build Guide. Even if you decide not to buy and build this particular linear power supply, carefully studying its support information might prove to be very educational.