This is a standard RCA plug with a detachable plastic relief. Simply unscrew the plastic relief to connect your wires to the plug.
The OPA2132 is a highspeed, FET input, dual channel operational amplifier.
This 3.5mm stereo plug comes with a metal relief. Simply unscrew the metal relief and connect your wires to it to make an audio connection!
This is a general purpose 20Hz-16KHz SMD microphone.
The LM386 is a low voltage audio power amplifier.
The OPA2134 is a high performance audio operational amplifier.