• Complete 5-Channel System Power: Powers an entire vehicle audio system from one chassis with 100W x4 @ 4 ohms and 150W x4 @ 2 ohms on Channels 1-4, plus 200W @ 4 ohms or 500W @ 2 ohms on the dedicated subwoofer channel.
• Dedicated Subwoofer Channel: Channel 5 includes adjustable low-pass (50Hz to 250Hz) and subsonic filter (10Hz to 50Hz) controls for proper bass management and subwoofer protection.
• Fully Adjustable Crossovers: Independent high-pass filters (27Hz to 250Hz) on Channels 1-4 allow precise tuning for mids and highs in active or passive configurations.
• Factory Integration Ready: High-level inputs and DC Sense automatic turn-on make it ideal for OEM head unit upgrades without requiring external converters.
• Compact, All-in-One Design: Saves space while delivering reliable Horizon Series performance with built-in 4-way protection and efficient cooling for daily or custom builds.

Sundown Horizon Compact 5-Channel 900 Watt RMS 4-Ohm Car Audio Amplifier HZ900.5

This Listing Includes

• (1) Sundown Horizon 5-Channel Amplifier HZ900.5

Everything you need. Nothing you do not.

The Horizon HZ-900.5 is engineered as a true all-in-one amplification solution. Channels 1 through 4 power your mids and highs with up to 150 watts RMS per channel at 2 ohms, while Channel 5 delivers up to 500 watts RMS at 2 ohms for your subwoofer. From clean vocals to tight low-frequency impact, this amplifier covers your entire soundstage in one streamlined install.

Advanced crossover controls give you precision where it matters. Channels 1 through 4 feature adjustable high-pass filters, while Channel 5 includes both low-pass and subsonic filtering to properly manage subwoofer performance and protect your system. Whether you are running factory integration or a fully custom build, the HZ-900.5 gives you tuning flexibility without complication.

Built with high-level inputs, DC Sense auto turn-on capability, and 4-way protection circuitry, this amplifier is ready for OEM integration and aftermarket systems alike. Its compact footprint makes it ideal for vehicles where space is limited but performance cannot be compromised.

If you want one amplifier to power everything cleanly and efficiently, the HZ-900.5 delivers serious output with reliable Horizon Series performance.

Features

• 5-channel full-system amplifier


• 100W RMS x4 @ 4 ohms


• 150W RMS x4 @ 2 ohms


• 200W @ 4 ohms (CH5 sub channel)


• 500W @ 2 ohms (CH5 sub channel)


• Adjustable high-pass filters on CH1-4


• Adjustable low-pass and subsonic filters on CH5


• High-level input capability


• DC Sense automatic turn-on


• Compact design for easy installation


• 4-way protection circuitry

Specifications:

• CH 1-4 RMS Power (@ 14.4V): 100W x4 @4-Ohms


• CH 1-4 RMS Power (@ 14.4V): 150W x4 @2-Ohms


• CH 5 RMS Power (@ 14.4V): 200W @4-Ohms


• CH 5 RMS Power (@ 14.4V): 500W @2-Ohms


• High Pass Filter (CH 1–4): 27Hz – 250Hz


• Low Pass Filter (CH5): 50Hz to 250Hz


• Subsonic Filter (CH5): 10Hz to 50Hz


• Input Sensitivity: Up to 6V Max


• Signal-to-Noise Ratio: 95dB


• Fuse Rating: 100A


• Weight: 4.12 lbs (1.87 kg)

Dimensions:

• Length: 11.25"


• Width:4.63"


• Depth: 2.2"