Upgrading a channel strip

[godzofguitar]

Hi all !
today is my first post in the group and I’m looking for some feedback on a mic input circuit design for upgrades or some basic clean up to drop the noise floor any help is much appreciated…

 

[JohnRoberts]

You could brute force it some with lower noise components but that preamp input stage is running open loop so will have higher distortion than preamps with negative feedback returned to the input device emitters. Most typical preamps require one or two more op amps to do that.

JR