Hi!
4 years ago i builded this project with OPA445 with upgraded parts to 5A and it is working fine. I used 4 pieces of 2N3055 in parallel, for R7 i used 2 pieces of 0,56 ohm/9W in parallel, for C1 i used 2 pieces of 10.000uF/50V.
I desided to build a new one and i dont know if i will use...