Z-150.2 LX - Zapco 2/1-Channel 500W RMS Class A/B Bridgeable Amplifier Class AB Bridgeable 12V Amplifier | Ultra High Speed PWM MOSFET Power Supply | Stable into 4-Ohms Bridged or 2-Ohms Stereo Load 4-Way protection circuitry (thermal/over current/speaker short/DC | Tested voltage & THD: 11.5~15V & less than 0.05% THD at Rated Power | Operating Voltage: DC10V~15.5V Power Input Rated Power Output | RMS Power, 4-Ohms Stereo: 150W x 2 Ch | RMS Power, 2-Ohms Stereo: 250W x 2 Ch | RMS Power, 4-Ohms Bridged: 500W x 1 Ch Signal-to-Noise Ratio: &gt;90dB | Frequency Response: 10Hz~30KHz (+/-1 dB) | THD @ RMS Watts: 0.05% | Channel Separation: &gt;50dB Fuse Rating: 35A x 2 | Input Sensitivity: 200mV~8V (+/- 5%) | Dimensions: 7.48" W x 2.46" H x 12.83" L