Diamond Audio 4-Channel HEX Series Full Range Class D Amplifier - HX480.4

Diamond Audio 4-Channel HEX Series Full Range Class D Amplifier - HX480.4

Unleash clean, dynamic power with the Diamond Audio HX480.4 HEX Series 4-Channel Full Range Class D Amplifier, engineered for audiophiles who demand precision, efficiency, and premium sound quality. Designed with high-tolerance components and advanced circuitry, this 4-channel car audio amplifier delivers exceptional clarity and reliable performance for component speakers, coaxial speakers, and custom audio systems.

Built on advanced Class D amplifier technology, the Diamond Audio HX480.4 amplifier maximizes efficiency while minimizing heat, ensuring consistent output even during extended listening sessions. With 120W x 4 at 4 ohms, 185W x 4 at 2 ohms, and 370W x 2 bridged at 4 ohms, this high power 4-channel amplifier offers flexible configuration for full-range speakers or bridged applications.

The HX480.4 HEX Series amplifier features a 4-layer PCB board with balanced differential inputs, delivering clean, noise-free signal transmission and accurate sound reproduction. Premium audiophile-grade components and SNAP capacitors ensure precise performance and long-term reliability in demanding audio setups.

For advanced tuning, the Diamond Audio HX480.4 Class D amplifier includes fully variable high-pass and low-pass crossovers (40Hz–400Hz) with a 24dB per octave slope, along with phase control for optimized system integration. The output clip indicators and top-mounted controls make setup easy and precise, ensuring optimal performance.

Designed with a durable anodized extruded aluminum heat sink, this compact amplifier provides superior thermal management while maintaining a sleek, modern appearance. Fully concealed mounting and an illuminated logo add a premium touch to any installation.

The Diamond Audio HX480.4 HEX Series Amplifier delivers powerful, distortion-free sound with exceptional precision, making it the perfect choice for high-end car audio systems seeking clarity, control, and performance.

Features

• 4-channel full range Class D amplifier
• 120W x 4 @ 4Ω / 185W x 4 @ 2Ω / 370W x 2 bridged
• Audiophile-grade high-tolerance components
• 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

What our Experts Think  

 
Q&A    

Q: What is the Diamond Audio HX480.4 designed for?
A: It is a 4-channel full-range Class D amplifier designed to power multiple speakers in car and custom audio systems.

Q: What are the benefits of a 4-channel amplifier?
A: It can power front and rear speakers or be bridged for flexible system configurations.

Q: What are the advantages of Class D amplification?
A: Class D technology delivers high efficiency, strong power output, reduced heat, and a compact design.

Q: Can the HX480.4 improve factory audio systems?
A: Yes. It provides cleaner power, higher volume, and improved overall sound quality when paired with compatible speakers.

Q: Is this amplifier suitable for custom vehicle audio builds?
A: Yes. It is ideal for car, truck, and powersports audio upgrades requiring reliable multi-channel amplification.

Maintenance Tips