Live in the mix! Functional, sweet sounding preamp is back! Was a lot of changes at once, output cap change happened, also heavy duty on/off switch too. Been listening without it for 3 to 4 weeks. Immediately could tell it's going to be a lot of fun having it back. Engaging. Completely black at very high levels when music goes quiet, not that it wasn't before, just probably a good sign?!
A few things I think the next iteration could end up with: using the same red & black wire as sent with the kit, parts express wire coating is minimal. Probably add an on light. Not sure what chassis changes yet but probably stay the same external dimensions, finish the base. Reposition RCA jacks and iec power cord to the back.
Thanks again guys! Rockstars!