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Horizon HZ-80.4 4-Channel Amplifier

Sundown Audio HZ-80.4 | Horizon Series 4-Channel Full-Range Amplifier (80W x4)Versatility Meets Clarity.The HZ-80.4 is your go-to solution for adding clean, controlled power across your mids and highs. With 80 watts RMS x 4 channels at 4 ohms, it’s the perfect amp for speaker upgrades, active component setups, or small subwoofers that need headroom without the distortion. This amp runs cool and clean — and with its compact chassis, it fits just about anywhere.The Horizon Series amps don’t cut corners. This model includes adjustable high and low pass filters on all four channels, a full-range passthrough option, and high-level input capability to simplify factory integration. Run it passive or active — bridge it for bigger loads — the HZ-80.4 gives you maximum control and Sundown-grade output from a surprisingly small form factor.Whether you’re upgrading a factory system or building something fresh, the HZ-80.4 gives your sound system the foundation it needs to shine. Clean mids, crisp highs, tight control. Specs: RMS Power @ 14.4V• 4 Ohm: 80W x4• 2 Ohm: 130W x4 High Pass Filter (CH1-4): 27Hz – 250Hz Low Pass Filter (CH1-4): 27Hz – 250Hz Input Sensitivity: Up to 6V Signal-to-Noise Ratio: 95dB Fuse Rating: 50A Dimensions: 7.4" x 4.63" x 2.2" Weight: 2.54 lbs (1.15 kg)

Specifications

channels
4
rms watts
130 W
Compare Prices(1 retailer)
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$469.99
Updated 11/11/2026
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Frequently Asked Questions

What is the Sundown Audio Horizon HZ-80.4 4-Channel Amplifier?

The Sundown Audio Horizon HZ-80.4 4-Channel Amplifier is car audio equipment made by Sundown Audio.

How much does the Sundown Audio Horizon HZ-80.4 4-Channel Amplifier cost?

See the recorded retailer prices in the "Where to Buy" section. Prices and availability can change; confirm both with the retailer before purchasing.

Where can I buy the Sundown Audio Horizon HZ-80.4 4-Channel Amplifier?

The "Where to Buy" section lists retailers we have recorded carrying the Sundown Audio Horizon HZ-80.4 4-Channel Amplifier. Check each listing's availability and confirm warranty coverage with the retailer.

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