Low-frequency closed-loop gain is 1 + 19k/1k = 20 V/V (26.02 dB). CF is in parallel with RF, so feedback increases above roughly 1/(2*pi*19k*330p) = 25.4 kHz and the closed-loop gain rolls toward unity. The finite 1 MHz GBW model also contributes. Confirm midband gain and the onset of high-frequency roll-off.
