Get powerful, clean low-end performance with this used QSC KS212C Powered Subwoofer, offered in great condition and ready to deliver chest-thumping bass. This dual 12-inch, powered cardioid subwoofer features a 3600-watt Class D amplifier module for remarkable output and reduced stage noise through its innovative cardioid design, projecting sound forward while minimizing rear energy by up to 15 dB. Ideal for mobile entertainers, AV professionals, and rental setups, the KS212C operates with impressive clarity and low-frequency extension ranging from 44 Hz to 104 Hz. Its rugged enclosure includes durable casters for easy transport, while onboard DSP provides sophisticated control and crossover options. Whether you're enhancing a live sound rig or expanding your event audio setup, this gently used KS212C delivers premium sonic performance at a value price.