Op Amps for Dummies please

Shure SM 58's are pretty ubiquitous when it comes to vocal mic's and gets pressed into service in some instances that it shouldn't so yes many a recording contains that characteristic presence peak that centered around 2K (but it's fairly broad and is meant to counter the bass boost that occures because most vocalists use them so close to their mouthes)

warmth on a vocal is acheived with careful tuning between 250 and 800 and the right "icing" between 2500 to 5000 so Indy your half way there.

without some subjective terms general sense could not be conveyed.
i half a pretty good idea what is being said when bored 184 is referencing a warm tone.
 
As some of you have read I am in the middle of repairing a Adcom GFP 555 pre in THIS thread. I am at a loss when it comes to op amps. I have a good understanding of what they do but when looking at the specs I get a little confused. I would like to use the Adcom as reference just so I have something tangible to work with and look at. The single channel op amps are labeled LT 8713 the dual channel I don't know off the top of my head.

Questions and assumptions?

Looking at mouser what is the difference between Audio IC and Amplifier IC?

I have read the Adcom GFP 555 has a 22 volt power supply so I am guessing the op amps need to be able to run 22 volts. But some of the recommendations I have read here like THIS one has a rating of 15 volts. To me that doesn't sound right. Then there is THIS one which has a rating of 22 volts but the some of the other specs are different.

It would make sense that over the years the op amps specs have changed because technology has gotten better but which specs do you look at and which ones if any do you ignore?

Hi, I have just repaired a GFP-555 IC101 with NE5534 and can do the job, as is rated to a max 22 volts
 
Put a socket, easier to change out different chips.
If the pre amp has a higher slew rate than the main amp it is enough.
The R/C networks and impedance loads will have to be matched.
Put a multi turn or regular pot on input and output to modify if needed.
And leave well enough alone, you can always make an external unit to play through your amp.
Those chips are not available any more.
So if you blow them up, you are in a tense situation.
Better make another, and do what you wish with it.