Attaching the schematic too. This is for a Mccurdy AT305A, the red markings are the revisions of the A circuit
The cap was strapped across R21 3K resistor. There is only one capacitor here - based on the colors I assumed this might be the 25pf capacitor? I'm not seeing any 120pf or 220pf capacitors anywhere, and I have several of these amplifiers. All of them only have one capacitor in this part of the circuit.