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preamplifier for a microfon

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serjmd

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Hi,

I am looking a preamplifier for a microfon (unidirectional 450 Ohm). I made one on operational apm, but it is not what i expected to be :(

Thanks
 

which kind of mic u r using? if its condenser mic then LM324(OP amp) gives a great result.
 

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