• 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.

IN26 - new hi-level input xfmr 39Vrms out

New input transformer, higher than usual output voltage level - check the peak to peak voltage in the 10kHz square graph, 100Ω source, 200k load, no Zobel network whatsoever. In the 10Hz-200kHz sweep graph, level response x2, x4, x6 for the x1 input (green)
Compared with triode 26 (in photo) I think it does about the same thing but with way lower distortion :) - still, not comparing apples with oranges...
 

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