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Item #:
99111207
MB Quart Formula 400 Watt 1 Ohm Stable 4 Channel Full Range Class Q1 Car Audio Mobile Amplifier with Bass Remote, FA2-400.4, Black
Item #:
99111207
NAD 4105
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The FA2-400.4 is a 400 watt bridgeable car audio amplifier that features innovative sound quality and power technology.
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What Stands Out
High Power Output
Delivering 400 watts of power, this amplifier ensures robust audio performance, making it ideal for users who crave high-volume sound quality in their vehicles.
1 Ohm Stability
Designed to be stable at 1 ohm, this amplifier efficiently drives a variety of speaker configurations without sacrificing performance, giving users flexibility in setup.
Bass Remote Included
The inclusion of a bass remote allows for on-the-fly adjustments, providing users with control over low frequencies for a personalized listening experience.
Product Details
| Minimum Supply Voltage | 0.2 volts_of_direct_current |
| Mounting Type | Surface Mount |
| Number of Channels | 4 |
| Output Power | 400 watts |
| Supply Current | 33 A |
| Maximum Output Power | 400 watts |
| Material Type | Metal |
| Specification Met | FCC |
| Manufacturer | MB Quart |
| Model | FA2-400.4 |
| Brand Name | MB Quart |
| Unit Count | 1 Count |
| UPC | 806576233756 |
| Included Components | FA2-400.4 |
| Item Weight | 3.9 pounds (1.77 kg) |
| Part Number | FA2-400.4 |
| Brand | MB Quart |
Who Should Buy?
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Bass Enthusiasts
Ideal for users who love deep bass, offering powerful amplification and bass remote control functionality.
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Small Car Audio Upgrades
Perfect for upgrading a small car’s sound system without taking up too much space or weight.
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DIY Installers
Great for audio enthusiasts comfortable with DIY installations, due to its straightforward setup and connection options.
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Compact Vehicles
May not fit well in compact spaces, as its build could be bulky for very small cars.
Product Description
MB Quart Formula 400 Watt 1 Ohm Stable 4 Channel Full Range Class Q1 Car Audio Mobile Amplifier with Bass Remote, FA2-400.4, Black
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Customer Questions & Answers
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Question:
What is the power output of the MB Quart Formula FA2-400.4 amplifier?
Answer: The MB Quart Formula FA2-400.4 amplifier provides a robust output of 400 watts. This power is significant for most car audio systems, allowing it to drive multiple speakers while maintaining clear sound quality. The amplifier's 1 ohm stability ensures that it can effectively power demanding setups, such as subwoofers or multiple driver configurations, without compromising on performance. Whether you're looking to enhance bass response or achieve a well-rounded sound profile, this amplifier meets your needs. -
Question:
Is the MB Quart Formula FA2-400.4 amplifier suitable for all car audio systems?
Answer: Yes, the MB Quart Formula FA2-400.4 is designed to integrate with various car audio systems. Being a 4-channel amplifier, it can power both front and rear speakers or be bridged to enhance bass performance through a subwoofer. This versatility makes it compatible with a wide range of car models and audio setups. Users looking to upgrade their factory audio or fully customize their system will find this amplifier a great choice. -
Question:
What is Class Q1 technology and how does it benefit sound quality?
Answer: Class Q1 technology in the MB Quart Formula FA2-400.4 amplifier is engineered to enhance audio clarity and output efficiency. This class of amplification reduces distortion and improves thermal performance, allowing the amp to operate cooler while delivering high-quality sound. This means that users can enjoy crisp vocals and deep bass without experiencing sound degradation, making it ideal for long drives or spirited listening sessions. -
Question:
Does the MB Quart Formula FA2-400.4 include a bass remote, and what is its purpose?
Answer: Yes, the MB Quart Formula FA2-400.4 comes with a bass remote. This remote allows you to adjust the bass levels directly from your driver’s seat, giving you control over your listening experience. For example, you can boost the bass for certain tracks while toning it down for others without needing to access the amplifier itself. This feature enhances convenience and helps tailor your sound to match your preferences on the fly. -
Question:
What are the installation requirements for the MB Quart Formula FA2-400.4?
Answer: Installing the MB Quart Formula FA2-400.4 amplifier typically requires basic tools and knowledge of car audio systems. Users need power and ground wiring, speaker wire, and potentially an RCA cable for the connection. For those less familiar with car audio installations, it may be beneficial to consult a professional. This amplifier's design accommodates easy mounting in various locations within a vehicle, making it manageable for both DIY enthusiasts and installers. -
Question:
Can I use the MB Quart Formula FA2-400.4 with an aftermarket head unit?
Answer: Absolutely, the MB Quart Formula FA2-400.4 is compatible with aftermarket head units. This amplifier can take audio signals from any head unit that provides RCA outputs. Integrating it with a quality aftermarket head unit can significantly enhance audio fidelity and expand your system’s capabilities, such as adding custom EQ settings and more extensive connectivity options for sources like Bluetooth or digital music players. -
Question:
What type of speakers work best with the MB Quart Formula FA2-400.4 amplifier?
Answer: The MB Quart Formula FA2-400.4 amplifier pairs well with a variety of speakers, particularly those designed for car audio use. Ideally, 4-ohm and 2-ohm speakers can be effectively powered by this amplifier, providing optimal performance. For best results, consider using it with high-quality coaxial or component speakers that can handle the wattage output without distortion. This combination will maximize sound clarity and overall listening enjoyment. -
Question:
Does the MB Quart Formula FA2-400.4 have built-in protection features?
Answer: Yes, the MB Quart Formula FA2-400.4 includes built-in protection features that guard against short circuits, thermal overload, and other potential issues. These protective elements ensure that the amplifier remains operational without risk of damage, contributing to its longevity. Users can feel confident in their investment, knowing that the amplifier is safeguarded during use, making it suitable for various audio environments. -
Question:
What are the dimensions of the MB Quart Formula FA2-400.4 amplifier?
Answer: The MB Quart Formula FA2-400.4 amplifier has compact dimensions, making it easy to install in various vehicle spaces. Generally, its design allows for flexible placement, whether under a seat or in the trunk, accommodating different vehicles without challenging spatial constraints. This versatility is crucial for car owners looking to enhance their audio without compromising on space. -
Question:
Where can I buy the MB Quart Formula FA2-400.4 amplifier in Namibia?
Answer: You can purchase the MB Quart Formula 400 Watt 1 Ohm Stable 4 Channel Full Range Class Q1 Car Audio Mobile Amplifier with Bass Remote, FA2-400.4, Black on Ubuy. Ubuy offers a wide selection of automotive audio products and ensures a smooth shopping experience. With robust service and customer support, it’s an excellent platform for buying this amplifier and getting it delivered to your location.
MB Quart Amplifiers Editorial Review
The FA2-400.4 Formula 400 Watt Amplifier has garnered a diverse array of customer feedback, reflecting a generally positive reception among users. Reviewers commend the amplifier for its sound quality, noting that it delivers clear and powerful audio. Many users are impressed with the amount of power it provides, suitable for enhancing their audio systems in cars. The amplifier's ability to drive multiple speakers effectively has also been highlighted, which is a significant advantage for those looking to build a robust sound system. On the technical side, users have appreciated the ease of installation, with many reporting that the setup process was straightforward. The compact design of the amplifier has been mentioned as a plus, making it easier to find suitable locations within vehicles without compromising space. Furthermore, the build quality has received praise, with customers noting that it appears sturdy and well-made, which is important for a device intended for high power use. However, some users expressed subtle concerns regarding the heat generated during prolonged use, suggesting that while performance is impressive, thermal management could be improved. A few reviews also mention that the manual could be more detailed, particularly for those who are less experienced with audio installations. Overall, the FA2-400.4 Formula 400 Watt Amplifier stands out for its impressive sound performance and solid build quality, making it an attractive option for audio enthusiasts looking to elevate their in-car listening experience. **
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Pros
- Excellent sound quality with clear audio output
- Powerful performance suitable for multiple speakers
- Easy installation process
- Compact design for space-saving installation
- Sturdy and well-built Construction
Cons
- Generates heat during prolonged use
Platform Trust & Buyer Confidence
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“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”
23 July 2026 · via Trustpilot
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NAD 4105
Order now and get it around Sunday, August 16
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Features & Benefits
- 400 watts of powerful, bridgeable car audio amplification.
- Innovative Q-Stasis Pre Amplifier Stage for minimal distortion.
- Built-in DC SIGNAL SENSE for easy integration with OEM systems.
- Heavy-duty, nickel-plated RCA inputs ensure secure connections.
- Class Q1 technology combines efficiency with superior sound quality.
- Protection features monitor overload and speaker shorts for reliability.
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