3 pin chassis mount microphone jack (male pins) , solder style
Brand name(s) : Mode Electronics

Image for illustrative purpose only , picture shown is part# 25-735-1
Packaged/Carded

Features:
7A @ 125V
Contact Resistance: 10mΩ @ 1ADC
Insulation Resistance: 1500MΩ @ 500VDC
Dielectric Strength: 1500VAC for 1 minute