BRAND NEW HIFONICS TPSA5001 500 Watts Max THOR Series Class-D Monoblock 2 Ohms MOSFET Car Stereo Amplifier Key Features: Hifonics TPS-A500.1 Class-D 2-Ohm Stable Monoblock Powersports Amplifier Peak Power Rating: 4 ohms: 250 watts x 1 chan. 2 ohms: 500 watts x 1 chan. Total power output: 500 watts Tested to withstand water dust mud and vibration Pulse Width Modulated MOSFET power supply Single channel operation 3-way protection circuitry (thermal overload and speaker short protection) Heavy duty aluminum alloy heat-sink Frequency Response: 10 - 300 Hz Signal to Noise Ration: > 100 dB Variable Bass Boost: 0 to +12 dB bass boost Fuse Rating: 30 A x 1 Product Weight: Approx. 2 lbs. / 32 oz. Product Dimensions: Approx. 3.7 W x 5.51 L x 1.77 H