• 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.

Does anyone recognize this circuit?

First time tube enthusiast, always been fascinated by tube technology and looking to dip my toes in for pennies by getting some affordable Chinese copies. Came across this 100 dollar pre-amp that's advertised as based on the McIntosh 2200 (questionable) and uses 6H3n tubes. Any information on what it really is and what to expect would be highly appreciated.

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