I have an old project....it's a headphone amp, and/or used as a high gain preamp.
It's a data-sheet inspired circuit.
It uses a vintage LH0033 buffer, with a buffer in an opamp loop...... and a few other parts.
LH0033's are hard to find, but I have dozens, new-old-stock, in the box.
I've built a few test circuits that work, but I'm no EE.
Here's the basic idea
Here, it is more detailed as drawn by me............
