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Old 25th May 2021, 4:14 pm   #9
Robert Gribnau
Join Date: May 2017
Location: The Hague, The Netherlands
Posts: 231
Default Re: Advice on this linestage build

What you perhaps could do is use the schematic of the passive tone control on the site you linked to, preceded by an EF86 in triode mode + a 12AU7 cathode-follower (dc-coupled). The EF86 gives you a gain of about 20, so of about 26 dB, while the tone control takes 20 dB off of that. You than have about 6 dB headroom.
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