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Old 10th Sep 2019, 8:39 am   #3
Andrew2
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Join Date: Mar 2010
Location: Dukinfield, Cheshire, UK.
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Default Re: Cathode follower line out - best practice

I don't have the cct in front of me, but it sounds like the HT supply for the new stage is being taken from a fairly high resistance part of the supply, maybe the part that supplies the low-level stages?
I'd suggest going directly to the main smoothing cap and installing a dedicated R/C decoupled branch for the cathode follower.

Oops, Frank beat me to it!
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