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MB Quart compact Two Channel, 400 watt Powersports amplifier with on-board equalization and simple installation with quick release connectors.


  • MARINE GRADE PROTECTION:  YES/  Amplifiers are ABYC & ASTM certified which defines that marine amplifiers must use conformal coated PC boards to resist corrosion from salt spray & moisture.   
  • PRE-AMP CIRCUITRY:  Q-Stasis Pre Amplifier Stage The highly engineered Q-Stasis pre-amplifier stage reduces incoming noise      from source units dramatically improving sound quality
  • INPUTS:  2 Pair, RCA Nickel-PlatedHigh temperature impact resistant with hex screw terminals that allow for secure connections and is erosion resistant
  • OPERATION MODE:  Mono operationDeisgned to power 1 subwoofer or subwoofer system
  • CROSSOVER / SIGNAL SHAPING:  LPFComplete control of amplifier signal, essential when using two or more amplifiers
  • CLASS / TOPOLOGY:  Full Range Class DHighly efficient circuit topology which helps the amplifer develop a lot of power in a very small heatsink.
  • OUTPUT DEVICES TECHNOLOGY:  PWM MOSFET Power SupplyStable power through the PC board with minimal heat generation
  • HEAT SINK:  AluminumQuickly dissapates heat to allow the amplifer to run lower impedance for longer duration
  • POWER SUPPLY:  Simpatico Coil DesignThe dual coil Pulse Width Modulated power supply keeps voltage constant through the Ultra-Fi output devices
  • BASS REMOTE:  IncludedWired Bass Remote allows adjustments to bass frequencies to be made from the control mounted anywhere in the vehicle.
  • OUTPUT CONNECTIONS: Quick Dissconect Wires, RCA ConnectionsQuickly remove amplifer when you are putting machine up for the winter of as a security precaution
  • CONNECTIONS TYPE: Gold-plated connectionsGold-plated power, ground, speaker and RCA corrosion resistant connections
  • DIAGNOSTICS: Three-stage protection circuitsMonitor thermal, overload, DC, and speaker short protection with lighted indicators on the amplifier end panel
  • MARINIZED / WATERPROOF: YESWater resistant for durability in any environment


  • Class Full Range:  Class D
  • Variable Voltage:  0.2V~9V
  • Signal To Noise Ratio:   >90dB
  • Frequency Response:  20Hz-20kHz
  • Crossover Type Electronic:  12dB Per Octave
  • Low Pass Crossover Switch Low Pass:  300 HZ
  • Bass Boots:  0-12dB@45Hz
  • Subsonic Filter:  60Hz
  • Power @ 2-OHMS:  2 x 250W
  • Power @ 4-OHMS:  2 x 125W
  • Total Channels:  2
  • Audio Inputs:  RCA
  • Power Terminal:  12V/GND Molex 10 ga
  • Speaker Terminal Wire Gauge Molex Plug Connector
  • Fusing: 1 x 30 Amps
  • Certifications:  Marine & Powersports
  • Dimensions:  3.70 X 5.51 X 1.77 in, 9.4 X 14.0 X 4.5 cm
  • Weight: 2.12 lbs (0.96 kg)