Sundown Audio Horizon HZ-1000 1000 Watt RMS Monoblock Amplifier

The Sundown Audio HZ-1000 from the Horizon Series is a compact Class D mono subwoofer amplifier engineered for powerful, clean bass in tight spaces. Its heavy-duty aluminum heat-sink chassis ensures efficient cooling and stable performance during high-output sessions. Perfect for car audio enthusiasts, this amp delivers controlled power, reliability, and space-saving design for premium sound systems.

The HZ-1000 is everything a mid-tier mono amplifier should be — refined, reliable, and ready to deliver 1000 watts of clean RMS power at 1 ohm. Whether you're upgrading your daily driver, adding a second amp to your system, or running a single sub with serious authority, this Horizon Series amp brings the power you need without the bulk or complexity you don't. Optimized for real-world installs, the HZ-1000 includes high-level input compatibility, DC Sense for factory integration, and a variable subsonic and low pass filter to keep your low-end crisp and controlled.

Its 4-way protection circuit monitors heat, voltage, shorts, and offset, so you can push your system harder without stressing your equipment. The included remote bass knob makes real-time adjustment simple — dial it up when the bass drops, or fine-tune your system from the front seat. From sealed to ported enclosures, factory to custom setups, the HZ-1000 gives you versatility and strength in a compact Class D platform that's easy to install and built to last. It's the definition of clean power, simplified.