Infinity Marine M3004A – 4-Channel Marine Amplifier - 75 Watt RMS x 4 | Class D

Upgrade your boat’s sound system with the Infinity Marine M3004A, a 4-channel Class D marine amplifier designed for powerful, crystal-clear sound on the water. Delivering 75 watts RMS x 4 at 4 ohms, 100 watts RMS x 4 at 2 ohms, or 200 watts RMS x 2 bridged at 4 ohms, this amp drives your full-range marine speakers or tower setup with impressive clarity and control.

Built for marine environments, the M3004A features corrosion-resistant components, conformal-coated circuit boards, and a sealed chassis that protects against salt, spray, and UV exposure. The amp’s variable high- and low-pass filters (32–320 Hz, 12 dB/octave) let you fine-tune your audio response, while preamp and speaker-level inputs ensure flexible integration into any system.

Compact, efficient, and powerful, this Infinity amplifier offers marine-grade performance with the sound quality expected from one of the world’s most trusted audio brands.

Key Features

• 4-channel marine amplifier

• Power Output:

  • 75 watts RMS x 4 @ 4 ohms

  • 100 watts RMS x 4 @ 2 ohms

  • 200 watts RMS x 2 bridged @ 4 ohms

• Variable filters: High- and low-pass (32–320 Hz, 12 dB/octave)

• Preamp and speaker-level inputs for flexible installation

• RCA adapters included for high-level input

• Preamp outputs for easy system expansion

• Class D amplifier technology for efficiency and reduced heat

• Marine-rated protection: corrosion-resistant hardware, sealed chassis, UV and salt resistance

Additional Information

• Wiring & hardware: Not included (8-gauge power and ground leads recommended)

• Fuse rating: 30A x 2

• Dimensions: 12.56” W x 2.17” H x 7.06” D

• Warranty: 1 year limited manufacturer warranty

• MFR #: INFM3004AAM

• Item #: 108M3004A

• Extended holiday returns thru Jan 15