• 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.

Search for thread/article about phono preamp design


There is a very nice article/thread here about a tube based phono preamp. I read this article a while ago but now I can´t find it any more. I would like to go more "in deep" and I remember that this articel was very well written.

Is is a "step by step" description how to desing first stage including discussion about noise of resistors and tubes. It might be a penthode design but I´m not sure. Some schematic parts and equations are included until a complete design.

My hope is, that someone remember the link....??

Thanks a lot!