A 4-Channel Professional Power Amplifier Series

The A 4-Channel Professional Power Amplifier Series is designed for professional installations and multi-zone sound reinforcement where multiple loudspeakers must be powered from a single amplifier. Available in A404, A406 and A408, the series provides output power from 4×400W to 4×800W at 8Ω, making it ideal for conference centers, auditoriums, churches, schools, hotels and distributed audio systems.

Unlike traditional two-channel amplifiers, the A 4-Channel Series reduces rack space, simplifies wiring and lowers system cost by combining four independent amplifier channels into one compact chassis. Its high-current output stage, low harmonic distortion and excellent damping factor ensure stable operation and precise loudspeaker control across all channels.

The series is engineered for continuous commercial use, featuring professional XLR inputs, SpeakON outputs, comprehensive protection circuitry and efficient cooling for reliable long-term performance.

For complete system integration, the A 4-Channel Series works seamlessly with Stage Sound System and professional passive loudspeaker systems.

Why Choose the A 4-Channel Professional Power Amplifier Series?

• Four independent amplifier channels in one compact chassis

• Output power from 4×400W to 4×800W @8Ω

• High damping factor (≥280) for precise speaker control

• Ultra-low THD and IMD

• Signal-to-noise ratio ≥102dB

• Wide frequency response (20Hz–20kHz)

• Professional XLR input and SpeakON output connectors

• Reduced rack space and simplified installation

• Ideal for multi-zone audio systems and fixed installations

Technical Specifications

A404

A406

A408

Typical Applications

The A 4-Channel Professional Power Amplifier Series is suitable for:

• Conference Centers

• Auditoriums

• Houses of Worship

• Schools and Universities

• Hotels and Banquet Halls

• Multi-Zone Commercial Audio Systems

• Distributed Sound Reinforcement

• Theater Sound Systems

• Corporate Meeting Rooms

• Rental Companies

• Theme Parks

• Fixed Installation Projects

Related Resources

To build a complete professional audio system, you may also be interested in:

• Learn how to design a complete sound reinforcement system in Stage Sound System.

• Match the amplifier with PA Speakers for distributed sound systems and commercial installations.

• Explore Conference Speakers for meeting rooms, lecture halls and auditoriums.

• Add extended low-frequency performance using Subwoofers.

• Browse additional Power Amplifiers for different channel configurations and output levels.

• Discover complementary Pro Audio Elements for complete system integration.

• View practical installation examples in Sound Solution Cases.