• 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.

Preamp - DIY vs Audio Research (or similar)

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Zen Mod

Zen Mod

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fourrings said:
Would you recommend any particular 12B4 project? I've found numerous schematics in circulation:

Brett's 12B4A

Another one

I've read great things about the 12B4, but I'm yet to find complete information on such project. Being new, it'd be helpful to know things such as types and voltage ratings of capacitors, types and power ratings of resistors, ideal PSU, etc.
Click to expand...


is it somewhere in the thread:
 

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