• 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.

Diy tube preamp with extern dc Power supply, what is it?

Hello, I recently bought an old diy preamp, i though it was a curcio Daniel design but i am not so sure anymore. My preamp has a riaa and different control for left / right phono, it uses 8 ecc83 and 2 ecc 82. The dc Power supply had a El 34 tube plus another i dont know what it is, small tube like ecc83. The preamp was build in Norway in the 80s or 90s. I have very litle info on it but I post some pictures, perhaps someone knows what design this is. It plays very nice, the Power supply is quite heavy. Any input on design and build quality is very much apreciated, I dont have any info on it.
 

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