Yes, you can replace the microphone with one with a 3.5mm plug, such as a Lavalier or similar, as the headset has a dedicated 3.5mm port on the left earcup. This port allows a compatible 3.5mm microphone to be plugged in directly, and specific plug-and-play replacement microphones are available for this model. The original microphone is detachable and cannot be lifted, and there is a mute button on the headset.