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edited Jan 10, 2021 at 0:04

Loo

What's the difference in sound quality between using 3.7v and 9v as phantom for electret mic?

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asked Jan 9, 2021 at 20:26

Loo

What's the difference in sound quality between using 3.7v and 9v as phantom for electret mic?

I'd like to pass from a mic/filter/amp circuit with the LM386 and powered by a 9v battery in single supply to a 3.7v equivalent using the PAM8403. In hi-fi audio the phantom DC is 48v. Is there any downside in using a voltage as low as 3.7?