Sundown Audio HZ-900.5 Horizon Series 5-Channel Amplifier — 100 Watts RMS x 4 at 4 Ohms + 500 Watts RMS x 1 at 1 Ohm
The Sundown Audio HZ-900.5 is a compact 5-channel Class D amplifier from the Horizon Series, engineered for clean, controlled power in tight spaces. Its heavy-duty aluminum heat sink ensures stable performance and efficient cooling during high-output use. Perfect for car audio enthusiasts seeking premium sound and space-saving design.
Features:
- 5-channel car amplifier
- 100W RMS x 4 + 200W RMS x 1 @ 4Ω
- 150W RMS x 4 + 250W RMS x 1 @ 2Ω
- 300W RMS x 2 @ 4Ω (bridged, channels 1–4)
- 500W RMS x 1 @ 1Ω (channel 5)
- Variable high-pass filters (channels 1–4)
- Variable low-pass filter (channel 5)
- Subsonic filter on channel 5: 10–50 Hz (12 dB/oct)
- Wired 16' remote level control for channel 5
- Class D amp technology
- Aluminum heat sink
- Preamp & speaker-level inputs (converter required for speaker-level)
- Wiring & hardware not included
- Requires 4-gauge power/ground leads & 100A fuse
- Set-screw speaker terminals accept up to 10-gauge wire
Specifications:
RMS Power Output: 100 W x 4 channels + 500 W x 1 channel
Power at 2 Ohms: 150 W x 4 channels
Power at 1 Ohm: 500 W x 1 channel
Bridged Power: 300 W x 2 channels
Minimum Impedance (Bridged): 4 Ω
Minimum Impedance (Unbridged): 2 Ω
Signal-to-Noise Ratio: 95 dB
Input Voltage: 14.4 V
Amplifier Class: D
Built-in DSP: No
Remote Control: Yes
Low-Pass Crossover Frequency: 50–250 Hz
Low-Pass Slope: 12 dB/oct
High-Pass Crossover Frequency: 27–250 Hz
High-Pass Slope: 12 dB/oct
Bass Boost: No
Fan Cooled: No
Fuse Rating: 100 A
Speaker Level Inputs: No
Preamp Outputs: No
Width: 11-3/8 in
Height: 2-1/4 in
Depth: 4-5/8 in
UPC: 810111135634
Free shipping is available within the 48 U.S. states. Orders placed before 11 PM ET are typically processed the next business day and arrive within 5–8 business days. Tracking information will be provided as soon as your order ships.
Need to make a change to your order? Contact us within 24 hours of purchase, and we'll be happy to help. Please note that orders already processed for shipment cannot be canceled.
1-Year Limited Warranty: As an authorized dealer, we provide a 1-year limited warranty covering manufacturer defects in materials and workmanship under normal use. The warranty does not cover physical damage, misuse, improper installation, or normal wear and tear.
Customer Support : 9:00 am to 5:00 pm
Email: info@eliteautogear.com
For technical support questions, contact us at cs@eliteautogear.com
Phone: (877)-215-8187
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Clean Power, Properly Delivered
Amplification That Holds Up Under Load
Stable Power Delivery
Built to hold its rated output under real load, so volume stays clean instead of falling away when the bass hits.
Protection Built In
Thermal, short-circuit and impedance protection shut the amp down safely rather than letting it fail.
Tuning Control
Onboard gain, crossover and bass controls let you match the amp to your speakers or subs instead of guessing.
Install-Ready
Standard terminals and mounting points make it straightforward to fit with the correct amp kit and fusing.
