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Re: copper cap rectifier

Solid state diodes plus a current inrush limiter plus a resistor simulating the voltage drop is not the same a tube rectifier. Garden variety diodes (iN1007, etc) produces switching noise when the current goes into reversal, which is less with better types but still present. Hexfreds and high speed/high efficiency diodes help here, however, a reverse recovery spike filter will smooth the sound considerably.

Considering that there are sonic differences between different manufacturers tube rectifiers of the same type, I would expect the Copper Cap to have a distinctly different sound than a tube rectifier.


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