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This Post Has Been Edited by the Author
In Reply to: RE: No this is not an comersial product posted by pix on April 03, 2017 at 22:59:28
"even though not carbon composition I think they are suitable for this application."
No, they're not. Only carbon composition is suitable for use as a grid stopper. All others risk creating oscillation that can be difficult to identify and troubleshoot.
No reason to have a 25K input Z. Also, if you're interested in a pentode front end, the EF86 is one of the best. Internally shielded, stable, low distortion, minimal microphonics, etc. I won't use anything else.
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