tempus fugit wrote:

Eeyore wrote :

The IC mic amps that are around are internally quite like their discrete
counterparts but just not quite as good and vastly more expensive.

They're a boon for 'designers' who can't actually really design though.


Guys like me.....

lol

Actually Graham that does bring up an interesting question though. The
SSM2019 is only a couple bucks apiece in for 100 or more. I'm sure you must
have close to that in parts in your design.

Nowhere near that much. Both need the pot, so lets take that out of the
equation.

My discrete design needs 2 or 4 transistors ( 2 of them very low noise) and 1 or
2 halves of a dual op-amp plus a few passives.

Total cost in manufacturing quantities is under 50 cents.


There seems to be a preference for discrete designs - what makes them better
than something like the 2019? Or are they actually better?

They actually can outperform a 2019. The later version I posted with overall
differential feedback most certainly so.

Graham