These power supply modules were puchased from a vendor over on DIY Audio. They are the later 'blue' versions of the boards. Just solder the jumpers to set the required output voltage, connect a suitable transformer and you have a low noise DC supply.
Here's a link to the DIY Audio thread;
https://www.diyaudio.com/forums/vendor- ... r-pcb.html
I have three of the modules, which are still sealed in their bags.
£20 plus postage and PayPal fees. I'll consider splitting and selling them for £7each but I would have to open the bags to separate the parts.
TPS7A4700 LDO Low Noise Power Supply modules
#1 TPS7A4700 LDO Low Noise Power Supply modules
Sorry, I couldn't resist!