This is a Synergy Series bass package by MA Audio. This system includes: two 500 watt 12 3-way sub enclosures and a 1600 watt 2-channel amplifier. Each enclosure comes pre-loaded with a Synergy Series 12 sub featuring an aluminum finished polypropylene cones and a triple treated surround, a 1 wide dispersion piezo horn tweeter, and a 3.5 midrange driver. TheSynergy Series 2-channel MOSFET amp's fine-tuned audio controls, extreme durability, and proprietary technologies deliver stronger, more reliable performance than most amplifiers on the market today. It features 200 watts RMS to 400 watts of power x 2 channels at 4 ohm bridged, the perfect match to these subs . Other features include: blue LED lighting, power/protection LEDs, 0-12dB bass boost (FREE remote bass knob), selectable LP/FULL/HP crossovers, variable LP/HP crossover filters, and RCA line and speaker line inputs.