More about the product
The Hertz HMP4D is a compact four-channel amplifier designed for powersport and marine audio systems where space is limited but high-quality sound is essential. Built for durability, the HMP4D features a rugged design that resists corrosion and moisture, making it ideal for harsh outdoor environments. Its sealed chassis ensures reliable operation even in challenging conditions.
This amplifier is engineered to deliver clean and powerful sound across four channels. Using Class D technology, the HMP4D provides efficient power delivery while minimising heat generation, which is critical for installations in confined spaces. Despite its small footprint, it offers impressive output, making it suitable for powering full-range speakers and subwoofers in UTVs, ATVs, motorcycles, and boats.
Connectivity is simple and practical. The HMP4D includes RCA inputs for easy integration into existing audio systems and corrosion-resistant terminals for secure connections. Its compact size allows flexible mounting options, and the design ensures long-term reliability without compromising performance.
The HMP4D focuses on pure amplification without unnecessary extras. It does not include Bluetooth or streaming features, keeping the design dedicated to delivering strong, clean audio. Installation is straightforward for those familiar with audio setups, but professional installation may be recommended for optimal results.
This amplifier is perfect for enhancing sound quality in compact audio systems, delivering clear and dynamic audio that complements the overall listening experience. Its combination of rugged construction, efficient performance, and small size makes it a practical choice for anyone upgrading their powersport or marine audio system.
Technical details
- Brand
- Hertz
- Channels
- 4-Feb
- Impedance
- @ 2 Ch: 4 Ω|@ 4 Ch: 2 Ω
- Output Power
- 2 Ch: 130 W x 2 (4Ω)|3 Ch: 50 W x 2 (4Ω) + 130 W x 1 (4Ω)|3 Ch: 65 W x 2 (2Ω) + 130 W x 1 (4Ω)|4 Ch: 50 W x 4 (4Ω)|4 Ch: 65 W x 4 (2Ω)
- Size
- 8.77 x 3.95 x 1.71 inches
- Total Power
- 600W
- Weight
- 1.35kg
Frequently Asked Questions
In addition to shipping all over Australia with Australia Post, we also offer in-store pickup from our Bankstown, NSW store. From the checkout, you're able to select between shipping methods, regular, Express, or In-Store Pickup. For more information on Bankstown Sound shipping, please read more here.
We offer installation services for everything we sell. Our installations come with a lifetime warranty and are performed at our Bankstown, NSW workshop by Car Audio installation specialists with over 25+ years experience. Please contact us for an installation quote if you're wanting us to do it for you.
Why Choose Bankstown Sound for Your Car Audio & Tech Upgrades
At our Bankstown Sound store and workshop in Sydney, our team ensures every car and auto audio installation and upgrade starts with an understanding of how you use your car. Our team works with you to understand your driving habits, the features you rely on, and the problems you’re trying to solve.
Most factory setups are built to broad standards and often lack the clarity or seamless connectivity required for how people actually drive. That’s why we focus on modernising your dashboard and audio performance based on how you use your vehicle.