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In the Forum: Melquiades Amplifier
In the Thread: Full range Melquiades implementation
Post Subject: I can’t say anything about YO-186Posted by Romy the Cat on: 3/28/2015
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I can’t say anything about YO-186. It looks like it is fine and the bias voltage or plate current did not move since I started to use it. I do not know how YO-186 edges however, it might be possible that she loose the cathode emission while holding the plate current.  Subjectively the sound is fine and since the tube is being used at a very conservative operation point I doubt that it somewhere at alarming cathode exhaustion. I wish I was able to test it with objective tester but I never was successful with DHT. I have a very interesting tube tested that might do it, the Royce Rolls of the tubes testers – the Russian L3, but I need to spend a good few days to become comfortable with it…

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