For that project is it just the
(2) Pearl 2 PCB Boards plus 6 Matched JFETS per Board.
I guess the power supply is up to me.
The website is pretty vague.
I built a Pass Pearl II for my ZYX Omega. It is phenomenal!!!
There is good filtering on the DC input. Some people claim to have success with very modest power supplies, wall wart kinds of things.
I did not put the power supply in the PP II case. Iuse lab grade analog power supplies and will soon build a DIY analog power supply that will have a DC ripple value in the microvolts.
There is a design on the diyAudio site for a power supply.