• 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.

Modified Van Waarde OTL HPA w/ 0D3 regulator

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#21
How I would have built this amp:
- bring L and R ground separated to the volume control
- connect L and R ground from VC to the base of the cathode resistor and run from there to star ground (per channel)
- connect grounds as per these drawings, earth sign indicates starground connection
 

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