Description

Hertz SP 4.900 – 4 Channel Advanced D-Class Car Amplifier (1000W RMS)

Hertz SP 4.900 – Ultra-Compact High-Power 4 Channel Amplifier with Advanced D-Class Technology

The Hertz SP 4.900 is a premium 4-channel Advanced D-Class (ADC) car amplifier designed for enthusiasts who demand maximum power, compact installation and exceptional sound quality.

Featuring the latest generation Hertz ADC (Advanced D-Class) output stage, the SP 4.900 delivers up to 250W RMS × 4 channels at 2 ohms and 500W RMS × 2 channels bridged at 4 ohms, while maintaining impressive efficiency of up to 85%.

Thanks to its ultra-compact design, high power density and IP55 protection rating, the Hertz SP 4.900 is the ideal solution for modern vehicles where installation space is limited, including sports cars, motorcycles, trucks and premium OEM audio upgrades.

Advanced D-Class Technology (ADC)

The Hertz SP 4.900 introduces the renewed ADC (Advanced D-Class Technology) amplifier platform, combining powerful output capability with high efficiency and excellent audio performance.

ADC technology provides:

• Up to 85% efficiency
• High power output in a compact chassis
• Reduced heat generation
• Excellent thermal stability
• Low distortion audio reproduction
• Precise speaker control

This advanced technology allows the SP 4.900 to deliver premium Hertz sound quality while remaining extremely compact.

Powerful Multi-Channel Performance

RMS Power Output (14.4V, 1% THD)

4-Channel Mode

4 Ω Load

• 4 × 160W RMS

2 Ω Load

• 4 × 250W RMS

3-Channel Mode

4 Ω Load

• 2 × 160W + 500W RMS

2 Ω / 4 Ω Load

• 2 × 250W + 500W RMS

Bridged 2-Channel Mode

4 Ω Load

• 2 × 500W RMS

Total Power Output

• 1000W RMS

This flexible configuration makes the SP 4.900 suitable for:

• Premium component speaker systems
• Active front stage installations
• Front and rear speaker amplification
• Speaker + subwoofer combinations

Ultra-Compact High-Power Design

The Hertz SP 4.900 delivers impressive output while maintaining a very compact footprint.

Dimensions:

211.6 × 130 × 49 mm

Weight:

2.15 kg

Installation advantages:

• Under-seat installation
• Sports car applications
• Motorcycle audio systems
• Truck behind-seat installations
• Space-limited OEM upgrades

Its high power-to-size ratio makes it one of the most versatile amplifiers in its class.

Premium Audio Performance

The SP 4.900 is engineered for accurate and dynamic sound reproduction.

Technical highlights:

• Frequency Response: 10 Hz – 35 kHz
• Signal-to-Noise Ratio: 105 dBA
• THD: 0.02%
• Damping Factor: 200

These specifications provide:

• Clear high frequencies
• Powerful and controlled bass
• Excellent speaker damping
• Detailed musical reproduction

OEM Integration & Flexible Connectivity

The Hertz SP 4.900 is designed to work with both factory and aftermarket audio systems.

Features include:

• RCA Pre-In inputs
• Speaker-Level inputs
• Automatic Remote Turn-On
• DC Remote activation from speaker output
• Adjustable input sensitivity

This allows easy integration with modern factory infotainment systems without replacing the original head unit.

Advanced Crossover Controls

The SP 4.900 provides complete tuning flexibility with adjustable filters.

Channels 1-2

• High-Pass Filter: 50 Hz – 5 kHz
• Low-Pass Filter: 50 Hz – 5 kHz
• 12 dB/Oct slope

Channels 3-4

• High-Pass Filter: 50 Hz – 5 kHz
• Low-Pass Filter: 50 Hz – 5 kHz
• 12 dB/Oct slope

Bass Boost

• Adjustable Bass Boost: 0 – 8 dB @ 45 Hz
• Available with LPF activated

These controls allow precise system tuning for different speaker configurations.

Durable IP55 Construction

The Hertz SP 4.900 is built for demanding automotive environments.

Protection features:

• IP55 protection rating
• Operating temperature: 0°C – 55°C
• Compact aluminium construction
• Efficient thermal management

The IP55 rating provides improved resistance against dust and moisture, making the amplifier suitable for unique installation environments.

Key Benefits

• Premium 4-channel Advanced D-Class amplifier
• Up to 4 × 250W RMS @ 2 Ω
• Up to 2 × 500W RMS bridged
• Total 1000W RMS output
• Renewed Hertz ADC technology
• 85% efficiency
• Ultra-compact installation design
• IP55 protection rating
• High damping factor (200)
• Adjustable HPF / LPF filters
• OEM audio integration support

Recommended Applications

The Hertz SP 4.900 is ideal for:

• Premium OEM audio upgrades
• Sports cars with limited installation space
• Motorcycle audio systems
• Truck audio installations
• Active speaker systems
• High-performance daily driver builds
• Custom car audio projects

Technical Specifications

Why Choose Hertz SP 4.900?

The Hertz SP 4.900 combines extreme power, compact size and advanced amplifier technology in one premium solution. With 1000W RMS output, ADC efficiency and professional tuning capabilities, it delivers the performance required for serious car audio upgrades.

Whether installed under a seat, inside a sports car or integrated into a premium OEM system, the SP 4.900 provides powerful, clean and reliable amplification.

Upgrade Your Car Audio Experience

A high-performance amplifier is the foundation of any premium sound system. The Hertz SP 4.900 delivers the power, control and efficiency needed to unlock the full potential of modern automotive speakers.

Choose Hertz SP 4.900 for compact power, advanced technology and Italian audio engineering.