I am designing an audio circuit design and it starts with an opamp at the input. (I attached a schematic for the opamp configuration I tried) I built an inverting opamp circuit on a breadboard and measured the output with an oscilloscope and with a speaker but got nothing. Sometimes the opamp will suddenly start to work, giving the expected gain, but if I turn the power off and back on, it won't work. It seems like it might have to do with the capacitors charging up but I am not sure. As an input, I am using a 1kHz sine wave from a signal generator with a 600 ohm output and I am supplying 9V to the opamp. Please help, I really don't understand what is going on!