Hansen's Active DI Box PUBLIC

Work in progress build of Bo Hansen's 1975 Active DI Box. I believe the circuits are properly placed, but the inputs/outputs need work. I'm trying to simulate a high impedance input (electric guitar) on the instrument input side, but I don't think the values or placement of the voltage generator are correct. Likewise on the output to the console, I'm trying to simulate 48v phantom power, but again I'm not sure how to place the voltage source. Finally, the grounding is thoroughly confused, and I suspect the audio grounding is wrong (not to mention the lack of ground on the phantom power input).

Not provided.