6N3 5670 6H3n vacuum tube preamplifier 40W transformer output single AC60V +6V Audio amplifier toroidal transformer

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2

5.0

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1

5.0

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6

10

4.8

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7

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2

4.0

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2

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1

1

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5.0

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5.0

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5.0

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-1%

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Incomplete data

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3

1.0

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1

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0

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0