• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

EAR 869

Maybe the first part of this text will help?
Inner Magazine - EAR 869 & EAR 834P

exactly same text everywhere on the web , without specific info I'm asking for

Years ago in HFN&RR. The schematic was posted in the article. Search HFN and see if there. If not I might be able to dig up article and scan. I was thinking or going this way recently but decided on a Tubelab SSE.


will try ,but I'm not having much hope , considering that I already invested decent amount of time searching the web .
to repeat - I have 859 schematic (from Sound Practices , presumably published with Tim's blessing) ..... and I'm interested what exact changes are for 869

not interested in cloning ,but proper analysis

tnx to both
Last edited:
hello ,

so your possible help ... look the pic ...

good luck ;)


  • EAR 859 - EL 509 - PCC 88.jpg
    EAR 859 - EL 509 - PCC 88.jpg
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