Description

Audison SR 4.500 – 4 Channel Class-D Car Amplifier (880W RMS)

Audison SR 4.500 – Premium 4 Channel Amplifier with ADT Class-D Technology

The Audison SR 4.500 is a premium 4-channel Class-D car amplifier engineered for exceptional sound quality, high power and maximum installation flexibility. Featuring exclusive Audison D-Class Technology (ADT), this amplifier delivers outstanding audio performance while maintaining a remarkably compact chassis.

Designed and developed in Italy, the SR 4.500 combines up to 220W RMS per channel at 2 ohms, advanced crossover controls, OEM integration technologies and premium construction, making it an excellent choice for both factory audio upgrades and high-end aftermarket sound systems.

Audison D-Class Technology (ADT)

The SR Series introduces Audison D-Class Technology (ADT), developed after extensive research and double-blind listening tests by Audison engineers.

ADT technology provides:

• Premium sound quality
• High efficiency
• Compact amplifier dimensions
• Excellent thermal performance
• Low distortion with natural audio reproduction

Unlike conventional Class-D amplifiers, ADT was specifically designed to preserve the musical character that Audison products are known for.

Powerful Multi-Channel Performance

RMS Power Output (14.4V, 1% THD)

4-Channel Mode

• 4 × 130W RMS @ 4 Ω
• 4 × 220W RMS @ 2 Ω

3-Channel Mode

• 2 × 120W + 480W RMS @ 4 Ω
• 2 × 220W + 440W RMS @ 2 Ω / 4 Ω

Bridged Mode

• 2 × 450W RMS @ 4 Ω

This flexible output configuration allows the SR 4.500 to power complete speaker systems, active front stages or speakers combined with a powerful subwoofer.

Premium OEM Integration

The Audison SR 4.500 is fully compatible with modern factory audio systems.

Features include:

• USS (Universal Speakers Simulator) for OEM head units with speaker-load detection
• High-level Speaker-In inputs
• RCA Pre-In inputs
• Full-range PRE-OUT output
• Automatic Remote Turn-On/Off (ART)
• Remote IN / OUT for multiple amplifier installations

These technologies simplify installation while maintaining excellent compatibility with factory infotainment systems.

Complete Crossover Controls

The amplifier includes a fully adjustable crossover section located beneath an elegant aluminium top cover.

Front Channels

• Full Range
• High-Pass Filter: 50 Hz – 3.2 kHz
• Low-Pass Filter: 50 Hz – 3.2 kHz
• 12 dB/Oct.

Rear Channels

• Full Range
• High-Pass Filter: 50 Hz – 3.2 kHz
• Low-Pass Filter: 50 Hz – 3.2 kHz
• 12 dB/Oct.

Bass Boost

• Adjustable 0 – 12 dB @ 50 Hz

When used together with an Audison Bit processor, the internal crossover section can be bypassed for complete DSP control.

Elegant Compact Design

The SR 4.500 features Audison’s signature Edgeless Design, combining style with practicality.

Highlights include:

• Extruded aluminium chassis
• Rounded edges for easier installation
• Passive cooling without internal fans
• Satin-finished aluminium control cover
• Large integrated heatsinks

The fanless design eliminates unwanted noise while reducing dust accumulation and improving long-term reliability.

Outstanding Audio Performance

Designed for audiophile-level listening, the SR 4.500 offers:

• Frequency Response: 10 Hz – 35 kHz
• Signal-to-Noise Ratio: 105 dBA
• THD: 0.08%
• Damping Factor: 200

These specifications ensure detailed, dynamic and highly accurate music reproduction.

Key Benefits

• Premium 4-channel Class-D amplifier
• Exclusive Audison D-Class Technology (ADT)
• Up to 4 × 220W RMS @ 2 Ω
• 2 × 450W RMS bridged
• USS OEM integration technology
• Automatic Remote Turn-On (ART)
• Adjustable HPF and LPF crossovers
• Bass Boost control
• Full-range PRE-OUT
• Compact fanless aluminium chassis
• Designed and engineered in Italy

Recommended Applications

The Audison SR 4.500 is ideal for:

• Premium OEM audio upgrades
• High-end component speaker systems
• Active front stage installations
• Front and rear speaker amplification
• Speaker and subwoofer combinations
• Audiophile car audio systems

Technical Specifications

Why Choose Audison SR 4.500?

The Audison SR 4.500 combines premium Italian engineering, exclusive ADT Class-D technology and exceptional installation flexibility in one compact amplifier. With powerful RMS output, advanced OEM integration and audiophile-grade sound quality, it is an ideal solution for drivers seeking uncompromising performance.

Upgrade Your Car Audio Experience

A premium amplifier is the foundation of every high-quality audio system. The Audison SR 4.500 delivers clean power, advanced tuning options and exceptional musical detail while remaining compact enough for modern vehicle installations.

Choose Audison SR 4.500 for powerful performance, premium sound quality and renowned Italian engineering.