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Simple electret "pre-amp"

I am using a Logitech/Labtech USB microphone which is doing an okay job but could benefit from some more gain. I don't want to touch their ADC and USB circuit but would prefer adding something in-line. Given that their 2-wire electret micro is powered by 2.5v on the signal line what would be a simple way to say double the signal seen by the circuit downstream ?

Reply to
grubertm
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Use an opamp configured to provide a gain of 2.

The o-l-d LM1458 dual opamp would work fine and it runs on a single ended supply.

Reply to
Lord Garth

It's doesn't run on 2.5V though does it ?

A TLC271 might be ok.

Graham

Reply to
Eeyore

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