Name: MB Quart - Nautic 560W Class AB Multichannel MOSFET Amplifier with Variable Crossovers - White
Brand: MB Quart
SKU: 6412783
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Key Specs
- Continuous Watts x Channel @ Ohms: 70 Watts x 4 @ 4 Ohm
- Amplifier Class: AB (An amplifier's mode of operation, specifically the conditions in which its electrical current flows for the duration of an audio signal, determines its class. Each class has its strengths and weaknesses when it comes to power efficiency, levels of crossover distortion, and overall sound quality.)
- Number Of Channels: 4
- Bass Boost: Variable (Circuitry that boosts the bass response of the amplifier, improving audio reproduction enhancing the sound of low frequencies. Fixed boost means the level of bass response is preset, whereas variable boost allows the user to make adjustments.)
- Low-Pass Crossover: Variable (Devices with this function allow only audio frequencies below a chosen cut-off frequency to pass through to a speaker or sound system. A device may have a cut-off frequency predetermined by its manufacturer (fixed), multiple cut-off frequency options to choose from (selectable), or have the capability for the frequency to be configured by the user (variable).)
- High-Pass Crossover: Variable (Devices with this function allow only audio frequencies above a chosen cut-off frequency to pass through to a speaker or sound system. A device may have a cut-off frequency predetermined by its manufacturer (fixed), multiple cut-off frequency options to choose from (selectable), or have the capability for the frequency to be configured by the user (variable).)
General
- Product Name: Nautic 560W Class AB Multichannel MOSFET Amplifier with Variable Crossovers
- Brand: MB Quart
- Model Number: NA3-560.4
- Color: White
Audio Power
- Continuous Watts x Channel @ Ohms: 70 Watts x 4 @ 4 Ohm
- Total Power Handling RMS: 280 watts
- Watts Per Channel RMS: 70 watts
- Amplifier Class: AB (An amplifier's mode of operation, specifically the conditions in which its electrical current flows for the duration of an audio signal, determines its class. Each class has its strengths and weaknesses when it comes to power efficiency, levels of crossover distortion, and overall sound quality.)
Audio
- Number Of Channels: 4
- Minimum Frequency Response: 10 hertz (Describes the maximum range of frequencies or musical tones a product can reproduce, from very low tones to very high treble tones. The minimum frequency or musical tone the speaker can reproduce. High treble tones have higher frequencies while low tones and deep bass have lower frequencies.)
- Maximum Frequency Response: 45 kilohertz (Describes the maximum range of frequencies or musical tones a product can reproduce, from very low tones to very high treble tones. The maximum frequency or musical tone the speaker can reproduce. High treble tones have higher frequencies while low tones and deep bass have lower frequencies.)
- Total Harmonic Distortion: 0.2 percent (Measurement of the harmonic sound distortion. The lower the percentage, the cleaner the sound.)
- Signal-to-Noise Ratio (SNR): 90 decibels (The ratio of the desired signal's strength to the level of background noise. A ratio higher than 1:1, which equates to greater than 0 decibels, indicates more signal than noise.)
- Bass Boost: Variable (Circuitry that boosts the bass response of the amplifier, improving audio reproduction enhancing the sound of low frequencies. Fixed boost means the level of bass response is preset, whereas variable boost allows the user to make adjustments.)
Features
- Low-Pass Crossover: Variable (Devices with this function allow only audio frequencies below a chosen cut-off frequency to pass through to a speaker or sound system. A device may have a cut-off frequency predetermined by its manufacturer (fixed), multiple cut-off frequency options to choose from (selectable), or have the capability for the frequency to be configured by the user (variable).)
- High-Pass Crossover: Variable (Devices with this function allow only audio frequencies above a chosen cut-off frequency to pass through to a speaker or sound system. A device may have a cut-off frequency predetermined by its manufacturer (fixed), multiple cut-off frequency options to choose from (selectable), or have the capability for the frequency to be configured by the user (variable).)
- MOSFET Power Supply: true (A specific type of power supply with the advantages of high switching speed and efficiency at low voltages.)
- Remote Control Included: No
- Marine: true
Input
- Line-Level Inputs: true (Also referred to as low-level inputs. Enables the amplifier to receive a sound signal from another device via RCA cables.)
Other
- UPC: 806576230014

Equip your boat with this four-channel MB Quartz Nautic marine amplifier for enhanced sound quality. Sound control is retained using variable electronic crossovers, while ,FLUID-FETs produce powerful, high-quality sound. This MB Quartz Nautic marine amplifier boasts marine-grade protection from water and dust and a heavy-duty heat sink for effective cooling.

560W total power: RMS rating of 140W x 4 @ 2 ohms, 4 channels driven for robust audio.
Variable high- and low-pass crossovers: Ensure flexible operation.
4 ohms impedance: Conducts power evenly to keep the speaker at an appropriate level.
0.2% THD (Total Harmonic Distortion): Provides clean sound.
90dB signal-to-noise ratio: Offers crisp audio.
0-9dB bass boost: Lets you add punchy bass to your music.
MOSFET power supply: Delivers efficient performance.
4-channel output: Allows easy system expansion.
Class AB circuitry: Ensures reliable power handling.