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In the Forum: Melquiades Amplifier
In the Thread: A different breed of 6C33C amplifier.
Post Subject: 2 out 3... not bad.Posted by KOTriode on: 10/4/2011
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After burn-in the heater for 24 hrs, I tested all 3 Golden grid tubes on a bench power supply , 2 of the tubes worked fines, 1 tubes does not have current. The tube seller gladly refund for the non functional tube.
I talked to a 6C33C OTL amp manufacturer in the far east and learned that about 20% of the tubes he received are not usable, he added that the good ones seemed to run reliably well.

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