• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

VTA ST120 Dual Rectifier Board V3 Installation

This post has been edited to simply show correct wiring for the DR board on an ST120.

Edit:
Spoke with Tubes4Hifi owner this morning and have updated the below graphic to show correct wiring. Hope this may help others in the future.


ST-120_DR_Complete-1.jpg
 

Attachments

  • ST-120_DR_Complete.jpg
    ST-120_DR_Complete.jpg
    236.4 KB · Views: 87
Last edited:
Actually they are 330k resistors, not 100.
I think I I simply copied a resistor drawing from some other area of the drawing I made a few years ago.

I just updated my drawing and updated the initial post to show the correct value.

Yes, a circuit diagram would be beneficial but none was provided.
 
Last edited: