Pyle PDGA440 Gear X Series 2000 Watt 4-Channel Power Amplifier 4 x 250 Watts RMS Power at 4 Ohms - Variable High Pass Filter : 50Hz -500Hz - Frequency Response : 20Hz -50KHz - Double Side Epoxy PCB Circuit Board - Thermal, Over load & Speaker Short Protection 4 x 500 Watts Peak Power at 4 Ohms - Input Sensitivity: 250mV-8V - High Technology SMD Circuit - Nickel Plated RCA Inputs - Soft Turn-on/Turn-Off 2 x 500 Watts RMS Power at 4 Ohms Bridged - THD : &lt;0.05% - Bridgeable at 4 Ohms - Low Pass Filter Controls - Fuse Rating: 30A x 1 2 x 1,000 Watts Peak Power at 4 Ohms Bridged - S/N Ratio : &gt;90dB - 2 Ohm Stereo Stable - High Pass Filter Controls - Dimensions: 6.88"(W) x 2.02"(H) x 7.17"(L) Variable Low Pass Filter : 50Hz -500Hz - Channel Separation : &gt;60dB - Tri-mode Capable - Power & Protection LED Indicator