Horizon HZ-100.4 4-Channel Full-Range Amplifier - 100W RMS x4 @ 4 Ohm, Compact Class D Amp with Adjustable HPF/LPF on All Channels for Car Speakers, Component Sets, and Factory Integration

Sundown Audio Horizon HZ-100.4Step up your system with the Sundown Audio Horizon HZ-100.4 4-Channel Amplifier, Sundown’s high-output solution for your mids and highs. Delivering 100 watts RMS per channel at 4 ohms—or a massive 170W x4 at 2 ohms—this amp gives you the headroom to push component speakers, pro audio drivers, or full-range coaxials harder, with less strain and superior sonic clarity. This amplifier was made for audio lovers who demand total control.Refined Power and Total Crossover ControlThe HZ-100.4 provides the foundation your sound system needs to go from average to outstanding:RMS Power Output @ 14.4V:100W x4 @ 4 Ohm170W x4 @ 2 OhmDimensions: Efficient size at just 8.63" x 4.63" x 2.2".Control Features:Full Crossover Capability: Includes fully adjustable High Pass Filter (HPF: 27Hz – 250Hz) and Low Pass Filter (LPF: 27Hz – 250Hz) on all four channels. Run it active, passive, or bridged with surgical precision.Input Sensitivity: Up to 6VIntegration and System ReliabilityBuilt for versatility, the HZ-100.4 is just as effective in factory integration as it is in custom builds:Factory Friendly: Features High-Level Input capability and DC Sense turn-on to simplify connection to stock head units.Protection: Includes a robust 4-way protection circuit to monitor and guard against heat, voltage, shorts, and DC offset.Audio Purity: Maintains an outstanding 95dB Signal-to-Noise Ratio for clean, distortion-free sound.Durability: A robust design and 60A fuse rating ensure stable and reliable long-term performance.If you're ready to upgrade your audio with tools and power, the HZ-100.4 gives you the capability to make it happen, all in one clean, efficient package.

• Versatile Power for Mids & Highs: The HZ-100.4 delivers 100W RMS x4 @ 4 Ohm (130W x4 @ 2 Ohm) of clean, full-range power. Ideal for component speaker upgrades, providing enhanced clarity and volume across all mids and highs without distortion.
• Total Frequency Control: Achieve precise sound with adjustable HPF/LPF on all 4 channels (27Hz – 250Hz). This feature allows maximum flexibility for active or passive setups, ensuring superior, controlled sound quality and perfect speaker blending.
• Compact & Discreet Installation: With a tiny footprint (7.4" L), the HZ-100.4 fits virtually anywhere. This compact chassis is perfect for discreet installation in vehicles with limited space, delivering powerful output from a tiny form factor.
• Seamless Integration & Expansion: Features high-level input for easy connection to factory radios and full-range passthrough. Simplifies wiring for factory upgrades and allows the signal to be easily sent to additional amplifiers for future system expansion.
• Protected Performance & Clarity: System is safeguarded by a 4-way protection circuit and a robust 95dB Signal-to-Noise Ratio. Ensures clean, distortion-free output and stable operation, providing the foundation for tight control and crisp highs.