MB Quart PA1-800.4 800W 4-Channel Class D Amplifier

The MB Quart PA1-800.4 is an 800-watt 4-channel Class D car audio amplifier designed to provide powerful, efficient performance in a complete vehicle sound system. Its 4-channel design makes it a versatile option for powering front and rear speakers or expanding an upgraded car audio setup.

Designed for both factory and aftermarket systems, the PA1-800.4 provides flexible installation options and advanced tuning controls, making it the perfect solution for serious audio upgrades.

Key Features

• 800 Watts Max Power Output
• Minimal Footprint: 4.92 x 4.41 x 2.01
• Full Range Class D Technology for efficiency and compact size
• 4-Channel Operation or bridgeable to 2-channel mono (2 x 400W)
• Variable High & Low Pass Crossovers (45Hz–850Hz)
• High & Low Level Inputs for OEM and aftermarket integration
• Low Noise Preamplifier Circuit for improved sound clarity
• Nickel-Plated RCA Inputs for corrosion-resistant connections
• Built-In Cooling System with Fan & Heat Sink for reliable performance
• Three-Stage Protection Circuitry (thermal, overload, DC, short)

Performance Specifications

• Max Power: 800 Watts
• Power @ 2 Ohms: 4 x 200W
• Power @ 4 Ohms: 4 x 100W
• Bridged @ 4 Ohms: 2 x 400W
• Frequency Response: 10Hz – 30kHz
• Signal to Noise Ratio: > 102dB
• Total Harmonic Distortion: 1.0%

Installation & Compatibility

• Universal Fit for most vehicles
• Speaker Level Inputs for easy OEM integration
• 8 AWG Power/Ground Terminals
• 10 AWG Speaker Terminals
• External 80A Fuse

Advanced Technology

Equipped with a PWM MOSFET power supply, this amplifier delivers stable and efficient power while minimizing heat. The extruded aluminum heat sink with integrated fan ensures optimal cooling, allowing extended performance even under demanding conditions.

Flexible crossover controls (HPF / FULL / LPF) give you complete control over your system tuning, making it ideal for multi-amplifier setups.

Warranty

1 Year Manufacturer Warranty

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov 

• car audio amplifiers 

• 6.5-inch car speakers 

• car audio subwoofers