Tested Units. In Great Working Condition. Safety Features: Over current protection; Total power protection; Over voltage protection; Short Circuit Protection. NEW AC 120V 60Hz 2A IN Power Cord Outlet Socket Cable Plug Lead Replacement For Harman Infinity Primus PS312 BK PS312BK PS 312 12" 400W Powered Subwoofer Platinum Quality Features: Overload Protection with High Quality Wires, Over-charge/discharge protection, Overheating Protection with Smart Chip, Anti-Interference Feature with better Isolation Materials, Short-circuit protection, Fully compatible with the original adapter, Tested with strict quality control standards Buy with confidence!