Basic question about choosing op amps

[leadbelly]

My question is about how to select an op amp for the application I have shown in the attached image. Forgive me if this is repetitive or way off in some technical sense.

At first I thought, buffer service, no problem, all the favorites mentioned on the forum can do it: OPA2134, NE5532, LM6172, and so on.

Then there I see in the OPA2134 datasheet a blurb about compensating for the impedance of the source, and if not done properly, introducing distortion.

And then I read in the LM6172 datasheet a warning about overshoot in unity gain applications and a suggestion to put a cap in the feedback loop to eliminate this.

So now I think, is 90% of the iceberg beneath the water?

[Elso Kwak]

Hi leadbelly ,
The density of ice is 0.9 that of water so your guess may be right.
I would replace the short between the inverting input and the output by a 1k resistor. Of course the opamp needs to be unity-gain stable.