Re: Copying Op Amps to Make Mic Amps



Andy Peters wrote:

Anyways, I think the most obvious reason for differences in the sound
of mic preamps is simply the input loading. Change the input
impedance and how it reacts with a dynamic mic changes.

That's one of the ways. Any 'boutique' mic pre I may ever make will have selectable input Z.

The other main things influencing their sound is transformer colouration and (for old designs) the small but
measurable amount of THD from the Class A stages.

Graham

.