250 Watts x 4 Output500 Watts x 2 idged Output 250W x 2 + 500W x 1 Tri-Mode Output Dual Variable Hi/Lo Electronic Crossover Network Dual Variable Bass Boost Dual MOSFET PWM Power Supplies Variable Input Level (Gain) Control Power ON LED Indicator LED Protection Indicator Remote Bass Boost Hi/Lo Impedance Input Thermal / Overload / Short Circuit Protection Anti-Thump Turn-On Tri-Mode Configurable Dimensions: 1.97-Inch H x 11.42-Inch W x 12-Inch L