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.