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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: Cathode Follower Designs ?? posted by rochester on September 28, 2000 at 17:37:19:
A cathode follower takes its output from the cathode. As such, it has 100% negative feedback and therefore the gain is slightly less than one. Because of the feedback, it has very low output impedence. It is therefore used as a buffer stage to provide a low impedence output.
Because it has 100% feedback, it should have very low distortion. However, many enthusiasts shun it because of a reputation for poor sound quality. My EAR 834P uses a CF at the output and it doesn't sound all that objectionable. There are ways to improve the performance, the most important of which is the use of a constant current sink as cathode load.
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- Re: Cathode Follower Designs ?? - Adrian 18:46:28 09/28/00 (0)
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