The MB Quart PA1-400.4 is a 4-channel Class D car audio amplifier designed to deliver clean, efficient power to a complete vehicle sound system. Its 4-channel configuration makes it a versatile choice for powering front and rear speakers in a car audio upgrade.
Whether you're enhancing factory audio or building a full custom system, the PA1-400.4 offers the flexibility, power, and reliability needed for high-performance sound.
Key Features
- 400 Watts Total Power Output
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Minimal Footprint: 3.82 x 4.41 x 2.01
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Full Range Class D Technology for high efficiency and compact size
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4-Channel Operation or bridgeable to 2-channel mono (2 x 200W)
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Variable High & Low Pass Crossovers (45Hz–850Hz)
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High & Low Level Inputs for OEM and aftermarket systems
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Low Noise Preamplifier Circuit for cleaner audio signal
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Nickel-Plated RCA Inputs for corrosion resistance and solid connection
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Three-Stage Protection Circuitry (thermal, overload, DC, short)
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Compact Extruded Aluminum Heat Sink for efficient cooling
Performance Specifications
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Max Power: 400 Watts
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Power @ 2 Ohms: 4 x 100W
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Power @ 4 Ohms: 4 x 50W
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Bridged @ 4 Ohms: 2 x 200W
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Frequency Response: 10Hz – 30kHz
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Signal to Noise Ratio: > 100dB
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Total Harmonic Distortion: 1.0%
Installation & Compatibility
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Universal Fit for most vehicles
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Speaker Level Inputs for easy OEM integration
- 8 AWG Power/Ground Terminals
- 10 AWG Speaker Terminals
- External 40A Fuse
Build & Technology
This amplifier features a PWM MOSFET power supply for stable, efficient power delivery and reduced strain on your vehicle’s electrical system. The extruded aluminum heat sink ensures consistent performance by dissipating heat quickly, allowing the amplifier to run at lower impedance for longer durations.
With flexible crossover controls and multiple input options, the PA1-400.4 gives you complete control over your audio system setup.
Warranty
1 Year Manufacturer Warranty
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