Typically in small audio amplifiers such as headphone amps, the gain
is fixed and the input is attenuated, or the gain changed. Leaving the
amp to run wide open, and attenuate its output would cause a lot of
distortion.
-Jon

On 5/20/08, alan smith <micro_eng2@yahoo.com> wrote:
> OK, so heres a question.  Small signal (electret mic) preamp stage, then feeding to a unity gain buffer.  Is it better to adjust the gain at the opamp, or max its gain and then attenuate the output in order to tweak the overall gain?
>
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-- 
Jonathan Hallameyer
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