This is a XLR (FEMALE) - XLR (MALE) coupler with GROUND LIFT Hum Stopper.
This adaptor is designed to eliminate interference associated with ground loops. Pin 1 is lifted resulting in an ungrounded signal.
• Connector: XLR3F to XLR3M
California Prop 65 -
WARNING: Cancer and Reproductive Harm -
www.P65Warnings.ca.gov