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Atma-sphere MA-1 Bias and DC offset adjustment (older model)

I have an older version of the MA-1 Amplifier with 5 6sn7 driver tubes and 12 6As7 output tubes (serial # 065). I can not find any information on Bias and DC offset adjustments. Please help. Ken


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Topic - Atma-sphere MA-1 Bias and DC offset adjustment (older model) - kngo44@gmail.com 10:21:24 10/01/16 (7)

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