Thanks, Keith. I apologize as I'm not that familiar with audio equipment, but you measure the output of the mic against the gain of the interface to see if it needs a pre-amp, correct? How do those numbers relate as the mic has a negative db number and the interface's gain is a positive db number? Basically, when does the relationship between the numbers indicate a pre-amp is necessary? For example, if the mic was spec'd at -44db and the Audient was spec'd at 61db or if the mic was spec'd at -57 and the Audient was spec'd at 51db, which would require a pre-amp?
Thanks for the info!
Because the microphone sensitivity is a negative number, the bigger the number, the lower the output level, e.g., output given as -58dB is less (
lower) than -53dB, so the latter number will require less gain to achieve the same level on a recorded track. (All things being equal, of course.)
Rob's answer is important to understand, because if you effectively boost the sensitivity/output of a dynamic mic to match that of a condenser, it will "hear" essentially the same thing as the condenser mic. There are differences in actual sensitivity across the audio spectrum based on a microphone's specific type of construction and electronics, as well as mechanical construction/components, so in that case all things are not ever going to be exactly equal, but it is somewhat of a misconception that condenser mics pick up more background noise. Yes, at the same preamp gain setting, you'll get more of everything, but with "gain staging" set to match a dynamic and condenser, then the difference is basically how the individual microphones capture sound across all frequencies (including those ones transmitted up mic stands and cables).
It is a simplification, but if the preamp's max gain exceeds the mic's sensitivity, you should be able to record a track in a range that allows easy mixing without adding any audible noise. At that point, it depends on the volume of the source vs. background noise, how it sounds. (Keep in mind that your *digital* audio signal needs to be recorded with peaks well below 0dBFS to avoid clipping, unlike the old analog/tape thinking where watching needles occasionally bounce even slightly into the red.)
Here's one article - don't know if it helps or not.
audiouniversityonline.com