By Diamond Audio

4-Channel DES Series Full Range Class D Amplifier - DES400.4D

$415.99
$519.99 $415.99
-20%
Brand: Diamond Audio
SKU: DES400.4D

Diamond Elite DES Series:

Advanced features for superior sound and flexible installation.

Elevate your audio with Diamond Elite DES Series

Experience cutting-edge engineering and superior design for unparalleled sound. Feel the difference.

4-Channel Full Range Class D Amplifier

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.

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 (35Hz–350Hz), 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.

Key Features

• 4-channel full range Class D amplifier
• 170W x 4 @ 2Ω / 140W x 4 @ 4Ω / 400W x 2 bridged
• Diamond Elite DES Series flagship performance
• Advanced digital chipset with full PWM power supply
• Variable HPF/LPF crossover controls (35Hz–350Hz)
• VOX / DC / REM auto turn-on options
• Balanced differential inputs for clean signal
• High damping factor for precise speaker control
• Compact, premium design for easy installation

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.

 

Specifications

  • 170W RMS x 4 @2Ω
  • 140W RMS x 4 @4Ω
  • Bridged (Mono @4Ω) 400W x 2 (4Ω Only)
  • Power Supply: Full PWM
  • Power Supply Threshold: 10.0V-17.0V (DC)
  • Idle Current: 0.7A
  • THD (1kHz@4Ω): 0.07%
  • S/N Ratio (A Weighted @ 1W): -77.4dBA
  • S/N Ratio (A Weighted @ FP): -97.4dBA
  • Low Input Level: 0.2mV-12.0V
  • High Input Level: Up to 25W RMS
  • Low Input Level: 22KΩ
  • Output Impedance: 0.047Ω
  • Damping Factor (50Hz@4Ω): >250
  • Bandwidth (-3dB): 10Hz-350Hz

Crossover (-12dB/Oct)

  • Variable High Pass: 35Hz-350Hz
  • Variable Low Pass: 35Hz-350Hz

Fuse Rating

  • ATC: 30A x 2

Dimensions (Length x Height x Width)

  • 11.81"x7.25"x2.0"(299.99mm x 184.2mm x 50.8mm)

Specifications

Brand

Diamond audio

Type

Motor vehicle amplifier

DES Amplifiers - Frequently Asked Questions

Q1: What are DES Amplifiers designed for?
A: They are designed for aftermarket car audio systems that need clean, powerful, and reliable amplification.

Q2: What type of amplifier technology does the DES Series use?
A: DES Amplifiers use full-range Class D technology, providing efficient power output with reduced heat generation.

Q3: Can DES Amplifiers power both speakers and subwoofers?
A: Yes. The series is designed to power full-range speakers as well as high-performance subwoofer systems, depending on the amplifier configuration.

Q4: Can DES Amplifiers be used to upgrade a factory audio system?
A: Yes. They are designed for aftermarket system upgrades and integration with aftermarket speakers and subwoofers.

Q5: Why choose DES Amplifiers?
A: DES combines clean Class D power, adjustable gain, precision crossovers, compact construction, and reliable performance for serious car audio upgrades.