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Vintage Asylum Classic gear from yesteryear; vintage audio standing the test of time. |
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Vintage Asylum Classic gear from yesteryear; vintage audio standing the test of time. |
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In Reply to: RE: Marantz 8B - Tube Rolling posted by sony6060 on November 4, 2014 at 06:18:24:
Be aware that the 8B circuit makes use of the fact that 6CA7 & EL34 bring out g3 to a separate pin instead of the more common practice of tying it internally to the cathode. If you roll in tubes such as KT77, KT66, 6L6, 5881, 7581, 6P3cE, 6550 etc, you bypass this subtle circuit detail. The amp will operate safely with these tubes but not as designed.
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Follow Ups
- RE: Marantz 8B - Tube Rolling - Steve O 12:06:54 11/04/14 (0)
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