from $299
The Kenwood eXcelon Class-D Mono Marine Power Amplifier is a compact, single-channel amplifier designed for marine audio systems. This Class D amplifier delivers 300W RMS at 4 ohms or 500W RMS at 2 ohms, and features a bass boost function and speaker line input sensor for enhanced audio control. Its durable aluminum finish and marine-grade construction ensure reliable performance in challenging environments, making it ideal for powering a subwoofer on your boat. Measuring 8.38" W x 5.88" H x 2.06" D, it comes with a 2-year warranty on both parts and labor.
Match your amplifier's power output (Watts RMS) to your speakers' sensitivity and impedance (Ohms). Do not obsess over astronomical peak wattage claims; RMS is the true measure of sustained power. Available from $299.
Amplifiers have practically zero ongoing costs aside from electricity, which is highly variable based on usage volume and class type (Class A uses more power than Class D). Good amplifiers can last decades with proper care. Consumables are virtually non-existent unless using tube amps.
Common Failure Modes
Solid-state amplifiers are extremely reliable. Failures usually stem from blown capacitors, overheated output transistors, or physical wear on volume potentiometers. Proper ventilation prevents 90% of heat-related failures.
Match your amplifier's power output (Watts RMS) to your speakers' sensitivity and impedance (Ohms). Do not obsess over astronomical peak wattage claims; RMS is the true measure of sustained power. Class D amplifiers run cool and are compact, while Class A/B offer traditional warm sound at the expense of heat and size.
Solid-state amplifiers can last 20+ years. Capacitors may eventually dry out and need replacement.
The Kenwood eXcelon Class-D Mono Marine Power Amplifier is available at abt, crutchfield, starting at $299.
Amplifiers have practically zero ongoing costs aside from electricity, which is highly variable based on usage volume and class type (Class A uses more power than Class D). Good amplifiers can last decades with proper care. Consumables are virtually non-existent unless using tube amps.
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