Fusion Apollo MKII MS‑AP61800 – Marine Power Amplifier, 6-Channel, 1800 W, Class D

The Fusion Apollo MKII MS‑AP61800 is a powerful 6‑channel marine power amplifier that takes your existing onboard Fusion audio system to a new level of sound. With 150 W RMS per channel at 4 ohms and a total power output of 1800 W, it delivers powerful, clear, low-distortion sound—ideal for multiple audio zones and demanding marine setups.

Thanks to efficient Class D technology, the amplifier operates with low power consumption and generates less heat than conventional Class AB amplifiers. The integrated high-power mode provides additional power reserves when needed, while the DSP integration optimally tunes each zone, ensuring consistently high sound quality.

Setup is particularly convenient: With the Easy‑Tune function, audio settings are automatically optimized for the best sound quality when used with a Fusion audio system with DSP and compatible Fusion speakers—no manual tuning required. Complex audio settings can be adjusted wirelessly via smartphone using the Fusion‑Link app, and suitable DSP audio profiles can be selected.

An included mounting plate enables quick and secure installation on board. The compact, marine-certified design is specially engineered to withstand moisture, vibrations, and temperature extremes. Status LEDs serve as reliable fault indicators for temperature, short circuit, or voltage issues.

Product features:

• 6‑channel power amplifier, 1800 W total power output
• 150 W RMS per channel at 4 ohms
• Class D technology—high efficiency, low power consumption
• High-power mode for additional dynamics
• Easy‑Tune automatic sound optimization*
• Selection of DSP audio profiles via Fusion‑Link app
• Wireless configuration via smartphone
• LEDs as fault indicators (temperature, short circuit, voltage)
• Mounting plate included for easy installation
• Compact, marine-certified enclosure

*Easy‑Tune is only available with Fusion audio systems with DSP functionality and Fusion speakers.

Compatible Fusion stereo systems:

• Apollo MS‑RA770
• Apollo MS‑RA670
• Apollo MS‑WB670
• MS‑RA210

Other variants in the Apollo MKII series:

• 2000 W monoblock—650 W RMS per channel (4 ohms)
• 1200 W 4‑channel—150 W RMS per channel (4 ohms)
• 1800 W 6‑channel—150 W RMS per channel (4 ohms)
• 2400 W 8‑channel—150 W RMS per channel (4 ohms)
• 140 W zone amplifier—20 W RMS per channel (12 V / 24 V)