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MB Quart FA2-900.5 Formula 900 Watt 5 Channel Class D Car Audio Amplifier

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SKU MB-FA2-900-5

MB Quart FA2-900.5 Formula 900-Watt 5 Channel Class D Car Audio Amplifier

MB Quart Formula series compact five-channel car audio amplifier featuring innovative sound quality and power technology to run four full-range channels and a subwoofer channel. The FA2-900.5 is a 900-watt 1-ohm stable (channel 5 only) car audio amplifier. Formula amplifiers feature DC Sensing to allow any amplifier to be easily integrated into an OEM system by simply adapting an RCA cable from the source unit. A Bass remote is included.

Compact Design: The MB Quart Formula series introduces the FA2-900.5, a sleek and compact five-channel car audio amplifier. Its design is perfect for seamless integration into any vehicle’s audio system.

Powerful Performance: With a robust 900 watts of power, this amplifier is capable of delivering high-quality sound to four full-range channels and a dedicated subwoofer channel. It is 1 ohm stable on channel 5, ensuring consistent and reliable audio performance.

Advanced Technology: The FA2-900.5 features DC Sensing technology, which allows for easy OEM integration by adapting an RCA cable from the source unit. This innovative approach simplifies the installation process and enhances the overall sound experience.

Included Accessories: A bass remote is included with the amplifier, providing convenient control over the subwoofer levels. This allows for fine-tuning of the bass to match personal preferences or to compensate for different music genres.

This amplifier is an excellent choice for car audio enthusiasts looking for a combination of compact size, power, and cutting-edge technology. Whether you’re upgrading your vehicle’s sound system or starting from scratch, the MB Quart FA2-900.5 offers a formidable solution for an immersive audio experience.


  • Weight: 8.18 lbs
  • Dimensions: 20.67 × 7 × 3.23 in
  • Item Weight (lbs): 6.78
  • Item Length (in): 15
  • Item Width (in): 5.82
  • Item Height (in): 2.2
  • Type: Amplifier
  • Brand: MB Quart
  • Series: Formula
  • Category: Mobile
  • Condition: New
  • Color: Black
  • Model Replaced: FA1-900.5
  • Warranty: 1 Year
  • Compatible Vehicles: Universal
  • Amp Class: Class D
  • Amp Total Channels: 5
  • Amp Max Power (watts): 900
  • Amp Power @ 1 Ohm (ch x watts): 1 x 500 (Channel 5 only)
  • Amp Power @ 2 Ohms (ch x watts): 4 x 100 + 1 x 250
  • Amp Power @ 4 Ohms (ch x watts): 4 x 50 + 1 x 200
  • Amp Crossover: Variable Electronic 12dB Per Octave
  • Amp Variable High Pass Crossover 12dB per Octave: 40Hz-400Hz
  • Amp Variable Low Pass Crossover 12dB per Octave: 40Hz-300Hz
  • Amp Tone Control / Parametric EQ: Built-in Bass Control
  • Amp Bass Boost: 0-12dB
  • Amp Subsonic Filter: 10Hz-40Hz
  • Amp Variable Voltage: 0.2-12V
  • Amp Frequency Response: 10Hz – 22KHz
  • Amp Total Harmonic Distortion (THD): < 0.1%
  • Amp Speaker Level Audio Inputs: Yes
  • Amp Power Terminal 12v/GND: 4 AWG
  • Amp Speaker Terminal Wire Gauge: 12 AWG
  • Amp Fusing: External 100A