Mr. Dj PROSUB12AMP -Channel Stage Subwoofer 12 Active/Pre Amplified Bass Reflex 4500 Watts P.M.P.O Subwoofer Design for great Sound reinforcement and monitoring during show Balanced XLR & 1/4'' Input XLR Output, Speak on Jack Output to connect an Passive Speaker or Subwoofer Woofer 12 60 Oz Magnet 3 Voice Coil, Class D Amplifier, 4500 Watts Power P.M.P.O, 500 Watts RMS, Satellite and Subwoofer Balanced Volume, 200Hz High Pass Filter ,4-8 Ohms Banana Output