A430 A450 A470 Four Channel Professional Power Amplifier Series
Flexible Multi-Channel Amplification for Professional Sound Systems
The A430 A450 A470 Four Channel Power Amplifier Series is designed for professional audio applications requiring multiple independent amplifier channels, stable power output and reliable long-term operation.
Featuring a professional Class AB transformer amplifier design, the series provides excellent sound quality with low distortion, high damping factor and strong speaker control. The four-channel configuration allows one amplifier unit to power multiple loudspeaker systems, helping simplify system integration and reduce rack space requirements.
Available in three power levels, the A430, A450 and A470 models provide flexible solutions for different sound reinforcement requirements, from medium-sized PA systems to larger professional event audio installations.
For complete professional audio solutions, visit our Stage Sound System.
Why Choose the A430 A450 A470 Four Channel Amplifier Series?
Four-Channel Output for Flexible System Design
Compared with traditional two-channel amplifiers, the four-channel configuration allows more efficient system management.
A single amplifier can power multiple speaker zones, including:
Professional Class AB Amplification
The A430, A450 and A470 use Class AB amplifier technology to provide:
Low harmonic distortion
Accurate audio reproduction
Stable output performance
Reliable operation under continuous load
The amplifier design ensures consistent sound quality for professional applications.
High Speaker Control Capability
With a damping factor above 280, the amplifier provides excellent control over connected loudspeakers, improving:
Bass accuracy
Transient response
Overall system stability
It is suitable for driving professional PA Speakers, Subwoofers, and stage monitoring systems.
Multiple Power Options
The series includes three models:
Model | 8Ω Stereo Output | 4Ω Stereo Output | Application |
|---|
A430 | 4 × 350W | 4 × 520W | Medium PA systems |
A450 | 4 × 550W | 4 × 730W | Professional event systems |
A470 | 4 × 700W | 4 × 1100W | High-power sound reinforcement |
This allows users to select the appropriate amplifier according to speaker configuration and venue requirements.
Typical Applications
The A430 A450 A470 Series is suitable for:
Real project examples are available in our Sound Solution Cases.
Product Overview
A430 Four Channel Power Amplifier
The A430 is the entry model of the four-channel amplifier series, providing 4 × 350W output at 8Ω and 4 × 520W output at 4Ω.
Its compact 2U rack design makes it suitable for medium-sized sound systems requiring multiple amplifier channels in a limited installation space.
Best For: Small and medium stage systems, conference venues, churches and commercial audio installations.
Technical Specifications
Specification | A430 |
|---|
Amplifier Type | Transformer Power Amplifier |
Circuit Design | Class AB |
Number of Channels | 4 Channels |
Stereo Output Power (8Ω) | 4 × 350W |
Stereo Output Power (4Ω) | 4 × 520W |
Frequency Response | 20Hz–20kHz ±0.5% |
Slew Rate | 30V/μs |
THD (20Hz–20kHz) | <0.05% |
Damping Factor | >280 |
Signal-to-Noise Ratio | ≥102dB |
Input Sensitivity | 1Vrms |
Input Impedance | 20kΩ Balanced / 10kΩ Unbalanced |
Input Interface | 2 × XLR |
Output Interface | 2 × NL4 |
Power Supply | AC110V–240V, 50Hz–60Hz |
Dimensions | 482 × 88 × 465mm |
Packing Dimensions | 585 × 142 × 520mm |
Net Weight | 19.8kg |
Gross Weight | 21.4kg |
A450 Four Channel Power Amplifier
The A450 provides increased output capability with 4 × 550W at 8Ω and 4 × 730W at 4Ω, making it suitable for professional event sound reinforcement systems.
With higher power reserves, the A450 can drive larger loudspeaker configurations while maintaining stable audio performance.
Best For: Rental companies, live events, medium-sized concerts and professional installations.
Technical Specifications
Specification | A450 |
|---|
Amplifier Type | Transformer Power Amplifier |
Circuit Design | Class AB |
Number of Channels | 4 Channels |
Stereo Output Power (8Ω) | 4 × 550W |
Stereo Output Power (4Ω) | 4 × 730W |
Frequency Response | 20Hz–20kHz ±0.5% |
Slew Rate | 30V/μs |
THD (20Hz–20kHz) | <0.05% |
Damping Factor | >280 |
Signal-to-Noise Ratio | ≥102dB |
Input Sensitivity | 1Vrms |
Input Impedance | 20kΩ Balanced / 10kΩ Unbalanced |
Input Interface | 2 × XLR |
Output Interface | 2 × NL4 |
Power Supply | AC110V–240V, 50Hz–60Hz |
Dimensions | 482 × 88 × 465mm |
Packing Dimensions | 585 × 1420 × 520mm |
Net Weight | 27.7kg |
Gross Weight | 28.4kg |
A470 Four Channel High Power Amplifier
The A470 is the highest-output model in this series, delivering 4 × 700W at 8Ω and 4 × 1100W at 4Ω.
Designed for demanding professional sound applications, the A470 provides greater power headroom for large speaker systems, high-output PA configurations and professional event productions.
Best For: Large event systems, rental companies, professional stages and high-power sound reinforcement.
Technical Specifications
Specification | A470 |
|---|
Amplifier Type | Transformer Power Amplifier |
Circuit Design | Class AB |
Number of Channels | 4 Channels |
Stereo Output Power (8Ω) | 4 × 700W |
Stereo Output Power (4Ω) | 4 × 1100W |
Frequency Response | 20Hz–20kHz ±0.5% |
Slew Rate | 30V/μs |
THD (20Hz–20kHz) | <0.05% |
Damping Factor | >280 |
Signal-to-Noise Ratio | ≥102dB |
Input Sensitivity | 1Vrms |
Input Impedance | 20kΩ Balanced / 10kΩ Unbalanced |
Input Interface | 4 × XLR |
Output Interface | 4 × Speakon |
Power Supply | AC110V–240V, 50Hz–60Hz |
Dimensions | 482 × 132 × 480mm |
Packing Dimensions | 585 × 180 × 520mm |
Net Weight | 35.2kg |
Gross Weight | 37.5kg |
Compatible Products
The A430, A450 and A470 can be integrated with:
Series | Channel | Position |
|---|
L300 | 2 Channel | Compact Professional Amplifier |
L1200 | 2 Channel High Power | Large Speaker / Subwoofer Amplifier |
A430-A470 | 4 Channel | Multi-Zone Professional Amplifier |
