MEMPHIS 16-SRX1.250 AMP MONO BLOCK CLASS AB 500W MAX CAR AUDIO STEREO BASS COMPONENT SPEAKERS SUBWOOFERS AMPLIFIER Memphis 16-SRX1.250 500W Monoblock Car Audio Amplifier Dimensions: 8.875 Remote Gain Control / Variable Sub Sonic Filter for Precise Subwoofer Control Power Handling: 4-Ohms: 150 W x 1 Chan. 2-Ohms: 250 W x 1 Chan High Current MOSFET Power Supply / Input Voltage Range: 100mV - 6V