Diamond Audio 4-Channel DES Series Full Range Class D Amplifier - DES400.4D
Elevate your system with the Diamond Audio DES Series 4-Channel Full Range Class D Amplifier, engineered for audiophiles who demand clean power, precision control, and dynamic performance. As part of the flagship Diamond Elite DES Series, this amplifier delivers premium sound quality, installation flexibility, and consistent power across all impedance levels.
The Diamond Audio DES Series 4-Channel Amplifier delivers powerful, refined, and distortion-free performance, making it the ideal solution for high-end car audio systems seeking superior clarity, control, and output.
Built with advanced Class D digital amplifier technology, the Diamond Audio 4-channel amplifier produces 170W RMS x 4 at 2 ohms and 140W RMS x 4 at 4 ohms, with the ability to bridge into 400W x 2 at 4 ohms. This versatile configuration makes it ideal for powering component speakers, coaxial speakers, or bridging channels for subwoofer applications, delivering rich, detailed sound across the full frequency range.
Engineered using the latest digital chipset and full PWM power supply, the DES Series amplifier ensures efficient operation with minimal distortion. With THD as low as 0.07% and a signal-to-noise ratio up to -97.4dBA, this amplifier delivers clean, accurate audio reproduction for high-end systems.
Fine-tune your system with variable high-pass and low-pass crossover controls (35Hzā350Hz), allowing precise tuning for optimal speaker performance and sound staging. The Diamond Audio DES amplifier also features balanced differential inputs for noise-free signal transmission and a high damping factor (>250) for improved speaker control and tighter response.
Designed for seamless integration, this full-range Class D amplifier includes multiple auto turn-on options (VOX, DC offset, and REM), ensuring compatibility with both factory and aftermarket head units. Built-in short circuit, thermal, and voltage protection ensures long-lasting durability and system safety.
Features
ā¢ 4-channel full range Class D amplifier
ā¢ 170W x 4 @ 2Ī© / 140W x 4 @ 4Ī© / 400W x 2 bridged
ā¢ Diamond Elite DES Series flagship performance
ā¢ Advanced digital chipset with full PWM power supply
ā¢ Variable HPF/LPF crossover controls (35Hzā350Hz)
ā¢ VOX / DC / REM auto turn-on options
ā¢ Balanced differential inputs for clean signal
ā¢ High damping factor for precise speaker control
ā¢ Compact, premium design for easy installation
What our Experts Think
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Vehicle-specific saddlebag lid audio upgrade designed for 1998ā2013 Harley-Davidson Touring motorcycles with a precision-fit installation.
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Includes MS692CX2 6x9-inch 2Ī© speakers delivering strong bass, clear vocals, and high-output performance for highway riding.
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Complete lid kit design provides a clean, factory-style appearance while improving rear sound coverage.
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Durable speaker construction helps withstand vibration, road conditions, and everyday motorcycle use.
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An excellent choice for Harley riders seeking louder, fuller rear audio with easy integration and premium sound performance.
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Q&A Ā Ā
Q: What is the Diamond Audio DES400.4D designed for?
A: The DES400.4D is a 4-channel full-range Class D amplifier designed to power speakers, coaxial systems, and custom car audio setups with efficient, clean output.
Q: How much power does the DES400.4D deliver?
A: It delivers 170W x 4 RMS at 2Ī©, 140W x 4 RMS at 4Ī©, and up to 400W x 2 bridged at 4Ī© for flexible system configurations.
Q: Can the DES400.4D power multiple speaker setups?
A: Yes. Its 4-channel design allows it to run front/rear speakers or be bridged for higher-output applications.
Q: Does the DES400.4D include tuning controls?
A: Yes. It features adjustable high-pass and low-pass crossovers, balanced inputs, and multiple turn-on options for easy installation and sound tuning.
Q: Why choose the Diamond Audio DES400.4D?
A: It combines compact size, Class D efficiency, strong multi-channel power, and flexible tuning for a high-performance audio upgrade.
Maintenance Tips Ā Ā
- Clean the amplifier surface with a soft, dry microfiber cloth to prevent dust buildup.
- Maintain proper airflow around the amplifier to ensure efficient cooling and prevent overheating.
- Inspect power, ground, RCA, and speaker connections regularly for secure, corrosion-free contact.
- Check fuses and wiring periodically for wear, damage, or loose connections.
- Keep the amplifier protected from excessive moisture, heat, and direct sunlight.
- Tighten mounting hardware as needed to reduce vibration and maintain reliable performance.
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