@fatdaddy2, is this helpful?
https://www.customanalogue.com/jlti_phono_stage.htm
I have what I believe was the 2nd generation black box design. It includes toggled MM/MC selection. When purchased JLTi insisted an outboard PS was not needed, full performance was available with the wall wart. But a friend built a regulated PS for mine which certainly upgraded the performance.
It has been some years now but I still consider the JLTi one of the better phono stage bargains

