Phantom Power Block Cables are fitted with passive components to protect from phantom power. An initial voltage spike will occur when phantom power is turned on. When ever possible plug the XLR connector in first, wait 5 seconds for internal bleeder resistor to reduce voltage and then plug 3.5mm connector in.
Components have an estimated 2,000 hour life. Periodically test cables with a voltage meter to ensure correct function.
End user accepts all responsibility for damages to equipment.