• 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.

Sansui BA-303

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LinuksGuru

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Joined 2008
Yes, CFB, and better construction overall.
I have built it with my own transformers and 6550 instead of 6L6GC.
50W RMS, very low distortions at power less <= 10W.

PS. You can transform AU-111 into ulra-linear if you don't have transformer with separate CFB winding. It will change sonic signature, however.
 
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