By Diamond Audio

2-Channel HEX Series Full Range Class D Amplifier - HX400.2

$529.99
$529.99
Brand: Diamond Audio
SKU: HX400.2

Diamond Audio HEX Pro Series

The ultimate choice for audiophiles who demand unmatched sound quality and power.

Top-of-the-line features and user-friendly controls

Seamlessly blending advanced technology with convenience.

2-Channel Full Range Class D Amplifier 

Experience precision-engineered performance with the Diamond Audio HX400.2 HEX Series 2-Channel Full Range Class D Amplifier, designed for audiophiles who demand clean power, dynamic response, and superior sound clarity. Built with premium components and advanced engineering, this 2-channel car audio amplifier delivers high-end performance for component speakers, coaxial speakers, and subwoofer applications.

Powered by full-range Class D amplifier technology, the Diamond Audio HX400.2 amplifier provides outstanding efficiency while minimizing heat and maximizing output. With 200W x 2 at 4 ohms, 350W x 2 at 2 ohms, and 700W x 1 bridged at 4 ohms, this high power 2-channel amplifier offers the flexibility to power full-range speakers or bridge channels for increased subwoofer performance.

Engineered for accuracy, the HX400.2 HEX Series amplifier features a 4-layer PCB board with balanced differential inputs, ensuring noise-free signal transmission and exceptional audio clarity. Audiophile-grade components, including high-tolerance circuitry and SNAP capacitors, contribute to precise sound reproduction and reliable long-term performance.

The Diamond Audio HX400.2 Class D amplifier includes fully variable high-pass and low-pass crossovers (40Hz–400Hz) with a 24dB per octave slope, allowing precise tuning for optimal system performance. Additional features such as output clip indicators, phase control, and top-mounted controls make system setup simple and accurate.

Built with a durable anodized extruded aluminum heat sink, this compact amplifier offers superior thermal management while maintaining a sleek and modern design. The fully concealed mounting and illuminated logo add a premium aesthetic to any installation.

Key Features

• 2-channel full range Class D amplifier
• 200W x 2 @ 4Ω / 350W x 2 @ 2Ω / 700W x 1 bridged
• Audiophile-grade components and high-tolerance design
• 4-layer PCB with balanced differential inputs
• Variable HPF / LPF crossovers (24dB slope)
• Output clip indicators and phase control
• Anodized aluminum heat sink for cooling efficiency
• Compact design with premium aesthetics

The Diamond Audio HX400.2 HEX Series Amplifier delivers refined, powerful, and distortion-free sound, making it the perfect choice for high-end car audio systems seeking precision and performance.

 

Specifications

  • RMS Power (4 Ω): 200 W X 2
  • RMS Power (2 Ω): 350 W X 2
  • Bridged (mono 4 Ω): 700 X 1
  • Bridged (mono 2 Ω): N/A
  • Bridged (stereo 4 Ω): N/A
  • Power Supply: Full PWM
  • Power Supply Threshold: 10.0V-17.0V (DC)
  • Idle Current: (0.7A)
  • THD 4 (1KHz @4Ω): 0.06%
  • S/N Ratio (A weighted @1W): -80dBA
  • S/N Ratio (A weighted @FP): -95dBA
  • Low Input Level: 200mV-5.0V
  • High Input Level: N/A
  • Low Input Level: 20 KΩ
  • High Input Level: N/A
  • Output Impedance: 0.011Ω
  • Damping Factor (50Hz @ 4Ω): >250
  • Bandwidth (-3dB): 10Hz-35KHz

CROSSOVER (-24 dB/Oct)

  • Variable High-Pass: 40Hz - 400Hz
  • Variable Low-Pass: 40Hz - 400Hz
  • Variable Sub-Sonic: N/A

FUSE RATINGS

  • ATC: 30A x 2

DIMENSIONS

  • L x W x H: 8.75” x 6.8” x 2” (222mm x 195mm x 51.5mm)

Specifications

Brand

Diamond audio

Type

Motor vehicle amplifier

HEX Amplifiers - Frequently Asked Questions

Q1: What are HEX Amplifiers designed for?
A: They are designed for high-performance aftermarket car audio systems that need strong, clean, and reliable power.

Q2: What amplifier technology does the HEX Series use?
A: HEX Amplifiers use Class D amplification, providing efficient power output in a compact design.

Q3: Can HEX Amplifiers power speakers and subwoofers?
A: Yes. Depending on the configuration, the series can be used to power full-range speakers or subwoofer systems.

Q4: Are HEX Amplifiers suitable for custom audio builds?
A: Yes. Their flexible configurations and compact chassis make them suitable for a wide range of aftermarket system designs.

Q5: Why choose HEX Amplifiers?
A: HEX combines efficient power, compact installation, and reliable performance, making it a practical choice for serious car audio upgrades.