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In the Forum: Audio Discussions
In the Thread: Single Ended Pentode to go?
Post Subject: The "gridy" mystery of pentodesPosted by Romy the Cat on: 5/20/2014
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With my limited experience of using pentodes (primary as phono corrector first stage) I think that the most mysterious in them is power supply of bias to  "other" grids. Looking at the Milq schematics it is obvious that I pay too much attention to the bias power supplies and I very much see the difference. With pentodes, which has a suppressor grid and screens, I find the sensitivity  of those secondary grids  to PS is critical. If somebody did find a good configuration of powering those grids then it would be wonderful.

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