The Hifonics TPS-A500.1 THOR is a compact 500 watt mono Powersports amplifier built to drive a single subwoofer or subwoofer system. Its Full Range Class D topology and PWM MOSFET power supply deliver stable power from a small heatsink, while the low-noise preamplifier stage keeps incoming source noise to a minimum.

Marine-grade conformal-coated circuitry resists salt spray and moisture, and nickel-plated RCA and power connections stay corrosion-free. Quick-disconnect wires let you pull the amplifier for winter storage or as a security precaution, and the three-stage protection circuitry monitors thermal, overload, DC, and speaker short conditions with lighted indicators.