This is a great resource which I've used many times but the reality is that most of the noise will come from the mic itself. I regularly record very quiet sour

This is a great resource which I've used many times but the reality is that most of the noise will come from the mic itself. I regularly record very quiet sources with the Rode NT1 (one of the mics with lowest self noise) and I've yet to hear any noise from any of my preamps.