Lanzar OPTIHC2004 4 Channel Digital High Current Full Range Power Amplifier<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> 4x100W RMS at 4 Ohms - Input Sensitivity : 130mV~7V - S/N Ratio : 100dB - Tri-Mode Capable - Fuse Rating : 30Ax2 </span></li><li><span class="a-list-item"> 4x200W MAX at 4 Ohms - Variable Low Pass Filter : 40Hz~350Hz - High Technology SMD Circuit - Double Side Epoxy PCB Circuit Board - Dimensions : 8.11''(W) x 1.97''(H) x 11.4''(L) </span></li><li><span class="a-list-item"> 2x380W MAX at 4 Ohms Bridged - Variable High Pass Filter : 40Hz~3KHz - Digital High Current Power Amplifier - Power and Protection LED Indicators </span></li><li><span class="a-list-item"> 4x180W RMS at 2 Ohms - Frequency Response : 10Hz~30KHz - Electronic Crossover Network - Thermal， Overload and Short Protection </span></li><li><span class="a-list-item"> 2 Ohm Full Range Stereo Stable - THD: 0.1% - Bridgeable at 4 Ohms - Soft Turn-on/Turn-off </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41h2mROtn5L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/415iCrCFmKL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41rK2by99tL.jpg" noproxy>