Features: DSP Digital Signal Processor with Boost for Extended Low-Frequency Control, Power-On and Signal Input LED Indicators, Signal Input LED Indicator, Clip Limiter Circuitry with LED Indicator, Balanced XLR + TRS Input Jacks, Balanced XLR Thru Output Jacks for Parallel Connections, Passive Heat Sink with Fan for Cooling, Subwoofer Crossover 80Hz/100hz/120HZ Low Pass, Subwoofer Level Adjustment, Subwoofer Phase Control, Built-in Pole Mount Socket, Built-in Carrying Handles, Custom Metal Grill, What's in the Box: Wooden Subwoofer, Power Cable, Technical Specs: Construction Materials: Wooden Painted Enclosure with MDF Board, Power Supply: 750 Watts RMS / 1500 Watts Program / 3000 Watts Peak Power, Woofer: 18", Magnet: 126oz, Voice Coil: 4'', Maximum SPL: 131dB Peak / 128dB Continuous, Product Dimensions: 20.87'' x 25.98'' x 24.21'' -inches