Nautic Amplifiers

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High End Marine

The marine environment is a brutal place for equipment. The MB Quart Nautic series is the perfect choice for your boat, wave runner or river float audio system.

On Board Equalization

Nautic Series amplifiers have built in equalization to fine tune the system with variable Frequency adjustment & Level Control & Bass EQ active at 45hz while in LP/BP operation.


The highly engineered Q-Stasis pre-amplifier stage is designed to keep incoming noise from source units at nearly immeasurable levels, dramatically improving quality.

Class SQ and Class Q1

Multi channel and mono Nautic amplifiers utilize sound quality circuitry Class SQ and Class Q1, the same found in the high end Reference line.


MB Quart output devices, FLUID-FETS are painstakingly selected for their ability to efficiently product power and mimic the sound quality of the highest end home amplifiers.

Conformal Coating

Nautic are ABYC & ASTM certified to define that marine amplifiers must use conformal coated PC boards to resist corrosion from salt spray & moisture.

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Audiophile Marine

Nautic amplifiers are not automotive amplifiers. While they will work just fine in a car or truck, they are purposely built to very strict standards set forth by both the American Boat and Yacht Council (ABYC) marine electronics standards and the American Society for Testing and Materials, ASTM International™. Specific for marine installations the Nautic amplifiers are available in 2, 4, 5 and a 6 channel configurations so you can drive speakers on the deck or in the cabin and have plenty of power for subwoofer channels. It is possible to have “great” sound on the water, the solution is Nautic from MB Quart. More information

Nautic Specs

Model 1-Ohm 2-Ohms 4-Ohms Mono Bridged @ 4-Ohms
NA180.2 n/a 2 x 90 2 x 60 1 x 180
NA360.4 n/a 4 x 90 4 x 60 2 x 180
NA710.5 n/a 4 x 90 + 1 x 350 4 x 60 + 1 x 200 2 x 180
NA540.6 n/a 6 x 90 6 x 60 3 x 180
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