• 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.

new opt for s5 k16ls?

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Edcor opt

I have the Edcor opt in my kit and the improvement is about ten percent. For the money, the best improvement to date was the upgraded Ruby Gold caps mentioned in other threads. The caps were around twenty five dollars verses one hundred for the opt. With the total in mods and kit I am at around five hundred. This kit has been a ton of fun and very educational.
 
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