• 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.

6C33C Production

If the amplifier is Both a single ended amplifier, And is Not a Parallel single ended amplifier, the matching of tubes is not very important.

Both OTL amplifiers, and Push Pull amplifiers usually need very well matched tubes in order to get good performance.

Just my general opinions.
 
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