Hertz SP 4.500 | Compact 4-Channel D-Class Amplifier

Powerful, Compact, and Built for Extreme Conditions

The Hertz SP 4.500 is a high-efficiency, 4-channel D-Class amplifier, engineered to deliver exceptional sound performance in motorcycles, sports cars, and trucks. Designed with rugged durability and advanced power efficiency, this amplifier provides crystal-clear audio with minimal heat output, making it ideal for compact and extreme environments.

With up to 600W total output, IP55-rated weather resistance, and universal compatibility with factory and aftermarket head units, the SP 4.500 ensures top-tier sound performance in any vehicle.

📞 Contact us for pricing and professional installation!

🚀 Key Features & Benefits:

✅ Advanced D-Class Technology – 87% efficiency, reducing power consumption and heat for consistent, high-output performance
✅ High-Power Output:

• 90W x 4 @ 4Ω
• 150W x 4 @ 2Ω
• 300W x 2 (bridged) @ 4Ω
• Total Output: 600W
  ✅ Compact & Rugged Design – Aluminum chassis (7.58” x 5.12” x 1.93”) with IP55 water & dust resistance, perfect for motorcycles and outdoor applications
  ✅ Universal Compatibility – Works with factory & aftermarket head units with Universal Speaker Simulators (USS) for speaker load detection bypass
  ✅ Custom Sound Tuning – Adjustable high-pass & low-pass crossovers (50Hz – 5kHz, 12dB/Oct), plus bass boost at 45Hz (0-8dB) for enhanced sound control

🔹 How the Hertz SP 4.500 Compares to Other Compact Amplifiers

✔ Ideal for motorcycles, sports cars, and trucks needing a high-power, compact amplifier
✔ More efficient than traditional Class A/B amps, reducing power draw and heat
✔ Weatherproof design makes it perfect for outdoor and marine applications

📢 What Users Are Saying About the Hertz SP 4.500

⭐⭐⭐⭐⭐ "Perfect amp for my Harley!"
"The Hertz SP 4.500 delivers crystal-clear sound with plenty of power. It fits perfectly in my bike's fairing, and the waterproofing is a game changer!" – Mike D.

⭐⭐⭐⭐⭐ "Amazing power in a small package!"
"This amp pushes my speakers effortlessly. Compact, efficient, and powerful – exactly what I needed for my sports car!" – Sarah T.

💡 Who Should Buy the Hertz SP 4.500?

✔ Motorcycle riders looking for a weather-resistant, high-power amp that fits in tight spaces
✔ Sports car owners needing a compact amplifier with high output and low heat production
✔ Truck and off-road vehicle enthusiasts wanting durable, high-performance sound without bulky equipment
✔ **Anyone looking for a rugged, D-Class amplifier that balances power and efficiency

❓ FAQ – Hertz SP 4.500 Amplifier

Q: Is the Hertz SP 4.500 waterproof?
A: Yes, it has an IP55 rating, making it resistant to water, dust, and dirt—perfect for motorcycles and off-road vehicles.

Q: Can I install this amplifier in my motorcycle?
A: Absolutely! Its compact size and weatherproof design make it ideal for fairing or saddlebag installations.

Q: Does this amp work with factory radios?
A: Yes, it includes Universal Speaker Simulators (USS) to bypass factory speaker load detection systems.

Q: How much power does the Hertz SP 4.500 output?
A: It delivers 90W x 4 @ 4Ω, 150W x 4 @ 2Ω, and 300W x 2 bridged @ 4Ω, with a total peak power of 600W.

💻 Request a Quote or Speak to an Expert!

We offer expert installation services to ensure your system is perfectly integrated into your vehicle.

📍 Stereo Installs
7471 Tyler Blvd, Ste. B, Mentor, Ohio 44060
📞 (440) 525-2001

🔗 Request a Customized Quote: https://stereoinstalls.com/pages/get-a-quote

🛒 Upgrade Your Vehicle’s Audio Today!
✔ Request a Quote for Your Specific Vehicle
✔ Professional Installation Available – Schedule Now!

🚀 Get powerful, crystal-clear sound with the Hertz SP 4.500 – the best compact amplifier for motorcycles, sports cars, and trucks!