• 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.

RIAA / Pre mod/upgrade

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Joined 2002
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Hi! I have this RIAA, (from far-east), that is fairly unusable...sounds like it is far off the curve....and no good overall sound...
Please give me some suggestions on how to upgrade, and calculate the riaa-filter...
Maybe go for other tube-types too?

Arne K

RIAA;
 

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