HED 2-Channel 400W Full Range Class-D Amplifier - H400.2D
Weight: 3.7 lb
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Overview
H400.2D - 2-Channel Full Range Class-D Amplifier
Upgrade your vehicle’s audio system with the Cerwin-Vega H400.2D HED Series 2-Channel Full Range Class-D Amplifier, a compact yet powerful car audio amplifier engineered to deliver clean sound, reliable power, and exceptional efficiency. Designed for car audio enthusiasts who demand high performance without sacrificing space, the H400.2D brings the legendary Cerwin-Vega sound experience to any custom or factory audio upgrade.
The H400.2D 2-channel amplifier features high-efficiency Class-D amplifier technology, allowing it to deliver strong, distortion-free power while generating less heat than traditional amplifier designs. This advanced digital topology maximizes output while maintaining excellent efficiency, making it an ideal choice for modern car audio systems where space, power consumption, and heat management are critical.
Built with durability in mind, the Cerwin-Vega HED Series amplifier includes a lightweight aluminum chassis that acts as an efficient heat sink. This design helps maintain stable operating temperatures even during extended listening sessions at higher volume levels. Combined with high-quality internal components and precision engineering, the H400.2D delivers dependable performance for years of reliable use.
The versatile 2-channel configuration allows for multiple system setups. It can power a pair of component or coaxial speakers with precision and clarity, or the channels can be bridged to deliver increased power to a subwoofer. This flexibility makes the H400.2D an excellent solution for both entry-level upgrades and advanced car audio installations.
Engineered to provide accurate sound reproduction, the amplifier produces tight bass response, detailed midrange frequencies, and crisp high-frequency output. Whether you're upgrading your factory audio system or building a custom setup, the H400.2D ensures your speakers perform at their full potential.
Key Features:
• 2-channel full-range Class-D car audio amplifier
• High-efficiency digital amplifier technology for powerful output
• Lightweight aluminum chassis for superior heat dissipation
• Durable construction for long-lasting reliability
• Bridgeable design for flexible system configurations
• Ideal for powering speakers or small subwoofer systems
Experience powerful, efficient sound performance with the Cerwin-Vega H400.2D HED Series Amplifier, designed to deliver precision and reliability in any car audio system.
Specifications
Cerwin Vega HED Series 2-Channel Full Range Amplifier - H400.2D
POWER RATING
FREQUENCY RESPONSE (HZ): 50HZ-500HZ
RMS POWER PER CHANNEL 4Ω 80W X 2
RMS POWER PER CHANNEL 2Ω 125W X 2
RMS POWER PER CHANNEL RMS 1Ω 200W
RMS POWER PER 2 CHANNELS BRIDGED 4Ω 290W X 1
POWER SUPPLY
- Power Supply: 12V-14.4V
- Power Supply Threshold: 8.4V-16.5V
- Idle Current: (0.5A)
DISTORTION
- THD: <0.3%
- S/N Ratio (A weighted @1W): >90dBA
- S/N Ratio (A weighted @FP): -88dBA
INPUT SENSITIVITY
- Low Input Level:
- High Input Level: 0.3V-8.5V
INPUT IMPEDANCE
- Low Input Level: 22 KΩ
- High Input Level:
OUTPUT STAGE
- Output Impedance: 1Ω
- Damping Factor (50Hz @ 4Ω): >100
- Bandwidth (-3dB): 20Hz-30KHz
CROSSOVER (-12/-24 dB/Oct)
- High Pass: 50Hz-500Hz
- Variable Low-Pass: 50Hz-500Hz
- Variable Sub-Sonic:
FUSE RATINGS
- ATC: 30A x 2
DIMENSIONS
- L x W x H: 9”x 6.3”x 1.9” (229.5mm x 160mm x 48.3mm)
FEATURES
- Selectable X-over: Low Pass/Flat/High Pass
- Selectable Turn On Mode: REM/VOX/DC
- LED Power/Protect Light Indicator
- LED Clipping Indicator - Helps Set Gains
Product Manuals

Power Your Sound!
Discover the incredible performance of Cerwin Vega HED Series Amplifiers, engineered for maximum impact and clarity.
Demand More!
Designed for high-demand audio setups, Cerwin Vega HED Series Amplifiers provide significant power and superior sound quality.