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MB Quart 4CHANNEL Waterproof AMP,4X140W (NA3-560.4)

4.6 (2) Write Review
Free shipping on orders over $29.99

$149.99

$ 70 .99 $70.99

In Stock

About this item

  • MARINE AMPLIFIER: 4-channel waterproof boat sound amplifier with marine-specific connectors built to withstand extreme weather and salt spray
  • RESISTS MARINE CONDITIONS: IPX standard for water-resisting so you can confidently enjoy all of your music while on the water
  • LOW DISTORTION: Low-noise preamplifier circuit maximizes power at low voltage without creating distortion, producing only quality music audio
  • CONNECTS TO PC: Prewired inputs connect directly to PC board for additional protection; Always leave connector closed over RCA jacks when not in use
  • SPECS: Class: SQ (Class A/B); Power: 560 watts; Distortion: Less than 0.20 percent; Dimensions (L x W x H): 10 x 6.50 x 2 inches; Weight: 6.70 pounds


Four Channel nautic waterproof amplifier with marine specific connectors. Top mounted sound contouring with onboard crossovers, bass boost and adjustable input sensitivity all concealed Behind top mounted controls.


James P. George
2025-04-08 17:54:09
Works great! Used in a Harley.
Change Your Oil
2025-02-14 14:51:54
Plenty of power for 4 channels in my Jeep. Mounted inside center console in place of original stock subwoofer. High and dry and I can hear music with no doors and top on the highway again.