[Phil Allison[_4_]]

Adrian Tuddenham wrote:

----------------------


The noise of the pre-amp should be negligible when compared with these
two sources of microphone noise. Most modern pre-amps will achieve this
as long as they are correctly matched to extract the maximum power from
the microphone.



** Fraid that last claim is plain wrong.

Attempting to "power match" a mic output to the pre-amp only makes the s/n ratio worse.

Nearly all mic makers recommend the load impedance be 10 times the mic's impedance for the specified performance including self noise.



..... Phil