I got tired of guessing the total gain, so I made a spreadsheet.
I hid any setting where PGA #2 was higher than PGA #1 since you want to have more gain in the 1st stage.
I sorted by total gain. There is a column for dB (decibels).
Made several corrections, wrong order, duplicates etc. Who proofread this thing anyways?
Apparently not me...
Enjoy.
Greg H.