• 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.

amp diagram for KT88 and 300B on the same circuit

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Palustris

Palustris

Member
Joined 2006
I designed and built this three stage amp a few years ago. Ultimately I believe that there are two weaknesses to the design: the driver tube should be direct coupled to the output tube and a two stage amp sounds more transparent. There are several good tubes to drive a 300B with a single stage.
 

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