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Durability, reliability, and guaranteed power make Thunder Marine amplifiers some of the best performing power amplifiers on the water. Thunder Marine amplifiers are loaded with technology that allows them to consistently produce higher levels of power while being water and vibration resistant. And they look good doing it. The TM904 is a four-channel MOSFET marine amp delivering a clean 900 watts max/300 watts RMS.
Features

Features
- Designed to meet the durability and reliability requirements of the Marine environment
- All controls are covered by plexi to guard them from water
- Stainless steel screws and gold plated terminals against corrosion
- RCA connectors with rubber boots to protect the internals from condensation
- The circuit board is conformal coated, twice!
- MTX ISMT technology for very high vibration resistance
- Corosion resistant FET bars that are screwed in place to ensure optimum cooling of all MOSFETS
- "Smart Engage" technology (High level input with automatic switch on, cables included)
- Low impedance protection
- Thermal protection
- Regulated PWM MOSFET power supply
- 100% garanteed power according to CEA norms
