Reply To: Gu50 signal path

[Sondre]

This is ok, the tube is grounded-pin7. But now, if i use my multimeter in “beep” mode,(cannot remember what it is in english) and check between phono socket ground, the outer part/ negative, there is No continuity to amp ground/chassis plate. So the incoming ground/negative signal from my preamp is not connected as per following build istructions. The schematic clearly States that the phono negative in the socket must be connected to ground. And this has been the case with every other amp i have built and repaired. So using the signal wire that was prepared in the video that only has the positive White lead connected to the driver board is confusing for me at the moment.