AUWAY Audio's professional 3-stage power supply amplifiers are designed for live sound reinforcement, touring equipment, large venue PA systems, and fixed professional audio installations. Featuring three-stage Class H amplification technology, the AS Series provides powerful dual-channel output while helping reduce unnecessary power dissipation compared with conventional fixed-rail linear amplifier designs.
The range includes AS1200, AS1300, AS1500, and AS1800 models, delivering from 2×1200W to 2×1800W at 8Ω stereo. These high-power Class H amplifiers combine a 3U rack-mount chassis, professional audio connections, and built-in protection functions. For sound engineers, rental companies, and system integrators, the range offers multiple power configurations to match different loudspeaker requirements and project budgets.
Efficient Three-Stage Class H Amplification
The three-stage Class H design uses multiple supply-voltage levels to improve power efficiency under varying audio signal demands. By reducing excess voltage across the output devices when full power is unnecessary, this technology helps limit wasted energy and heat generation. It is particularly useful for professional audio systems that experience frequent changes in signal level during live performances.
High-Power Dual-Channel Audio Output
AUWAY's AS Series provides four output configurations, ranging from 2×1200W to 2×1800W at 8Ω. The amplifiers also offer published 4Ω stereo and bridge-mode ratings, allowing system designers to compare available power options for compatible professional loudspeaker systems.
Low-Distortion Professional Sound Reproduction
The AS Series has a specified frequency response of 20Hz–20kHz (+0/-0.5dB) and THD+N below 0.05% under the manufacturer's stated test conditions. These specifications support accurate audio reproduction for vocals, musical instruments, and demanding sound reinforcement applications.
Professional 3U Rack-Mount Construction
The AS Series features a 3U rack-mount chassis with published dimensions of 482×545×130mm. The substantial chassis accommodates the amplifier's high-power architecture, making the range suitable for appropriately ventilated professional equipment racks used in touring and fixed installations.
Professional Connectivity and Protection
XLR audio inputs and Speakon speaker outputs support integration with compatible professional audio equipment. The published specifications also include DC fault protection, output relay switching, and thermal output muting with automatic recovery. Proper ventilation, speaker impedance matching, and system configuration remain essential.
Choosing the right professional Class H power amplifier requires comparing output power, speaker impedance, installation space, and equipment weight. The following table summarizes the published specifications of AUWAY's four AS Series models.
| Specification | AS1200 | AS1300 | AS1500 | AS1800 |
|---|---|---|---|---|
| 8Ω Stereo | 2×1200W | 2×1300W | 2×1500W | 2×1800W |
| 4Ω Stereo | 2×1800W | 2×1950W | 2×2250W | 2×2700W |
| 8Ω Bridge | 3600W | 3900W | 4500W | 5400W |
| 4Ω Bridge | 5000W | 5400W | 6700W | 7500W |
| Output Circuit | Class H | Class H | Class H | Class H |
| Rack Space | 3U | 3U | 3U | 3U |
| Net Weight | 32.5kg | 33.5kg | 34.5kg | 35.5kg |
Power Output Comparison: At 8Ω stereo, the AS1800 provides 50% more rated output power per channel than the AS1200 (1800W versus 1200W). At 4Ω, the AS1800 delivers 2700W per channel compared with 1800W for the AS1200. Both models use two channels and a 3U chassis, allowing buyers to compare power capacity while considering equipment weight and loudspeaker requirements.
Technical Note: These values are published amplifier ratings under specified load conditions. They should not be interpreted as continuous power consumption or guaranteed output under every operating condition. Speaker power handling, amplifier headroom, and electrical supply requirements must be checked before installation.
Different professional audio systems require different amplifier output capacities. AUWAY provides four AS Series models to help buyers select a suitable three-stage power supply amplifier based on speaker specifications, operating conditions, and installation requirements.
AS1200 Professional 3-Stage Class H Power Amplifier
Provides 2×1200W at 8Ω and 2×1800W at 4Ω. As the lowest-power model in the AS Series, it offers a suitable starting point for compatible stage-monitor systems, PA installations, and professional sound reinforcement projects requiring moderate output within this high-power range.
AS1300 High-Performance Live Sound Power Amplifier
Delivers 2×1300W at 8Ω and 2×1950W at 4Ω. This dual-channel Class H amplifier offers additional power capacity for appropriately rated professional speakers used in live performances, entertainment venues, and event sound systems.
AS1500 High-Power Stage Audio Amplifier
Supplies 2×1500W at 8Ω and 2×2250W at 4Ω. It is designed for professional sound systems requiring greater output power, including compatible high-output PA speakers, touring audio equipment, and demanding venue installations.
AS1800 High-Output Touring Class H Amplifier
Delivers 2×1800W at 8Ω and 2×2700W at 4Ω, providing the highest rated stereo output in the AS Series. It is an option for large professional PA systems, compatible line-array configurations, and high-power sound reinforcement applications.
AUWAY's three-stage Class H power amplifiers are intended for professional audio environments where substantial output capacity, speaker compatibility, and dependable amplification are important.
Live Concerts and Stage Performances
High-power Class H audio amplifiers support compatible PA loudspeakers used for vocals, instruments, and live music. The available power ratings allow sound engineers to select an amplifier suited to different speaker configurations and performance requirements.
Professional Touring and Rental Sound Systems
The AS Series can be installed in suitable 3U rack systems for touring and event production. Buyers should consider amplifier weight, rack ventilation, transport requirements, and available electrical power when building mobile sound systems.
Large Venue PA Installations
These professional power amplifiers can be integrated into compatible sound reinforcement systems for auditoriums, entertainment venues, performance halls, and other large gathering spaces requiring substantial audio output.
High-Power Subwoofer Systems
Selected AS Series models provide output ratings suitable for appropriately matched professional subwoofers. Users should confirm loudspeaker impedance, continuous power handling, crossover settings, and limiting requirements before connecting low-frequency speaker systems.
Houses of Worship and Performing Arts Venues
Professional Class H power amplifiers can support speech and music reinforcement systems in larger worship spaces and performance venues where controlled amplification and clear audio reproduction are essential.
In addition to three-stage Class H power amplifiers, AUWAY Audio provides other amplifier technologies and configurations. Comparing these categories can help buyers identify the most suitable solution for different sound system projects.
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Complete Professional Audio Equipment Collection
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A 3-stage power supply amplifier in AUWAY's AS Series uses a three-stage Class H supply design with multiple voltage levels for the output stage. This approach helps reduce unnecessary power dissipation as audio signal demands change. The AS Series includes four professional dual-channel amplifiers rated from 2×1200W to 2×1800W at 8Ω.
Conventional Class AB amplifiers generally operate with fixed supply rails, while Class H designs use different supply-voltage levels to improve efficiency. A three-stage Class H amplifier can reduce excess voltage across its output devices during lower-level audio signals. Actual efficiency depends on circuit design, load conditions, and audio signal characteristics.
The main differences are rated output power and equipment weight. At 8Ω stereo, the AS1200 delivers 2×1200W, the AS1300 delivers 2×1300W, the AS1500 delivers 2×1500W, and the AS1800 delivers 2×1800W. All four use Class H amplification and a dual-channel 3U rack-mount design.
Yes. All four models have published 4Ω stereo ratings, ranging from 2×1800W for the AS1200 to 2×2700W for the AS1800. Users should confirm the total connected speaker impedance and recommended wiring configuration before operation. Bridge-mode operation requires additional attention to the manufacturer's load limits.
They can be suitable for compatible professional subwoofer systems when their rated output power, load impedance, and operating conditions match the loudspeaker requirements. Proper signal processing, high-pass filtering where necessary, and suitable limiter settings are important for protecting low-frequency speakers.
Start by checking the loudspeaker's nominal impedance, continuous power rating, and recommended amplifier power range. Then compare amplifier channel count, output power, available headroom, cooling requirements, electrical supply, and installation space. AUWAY's AS Series offers four power levels for different professional sound reinforcement projects.
Looking for a professional three-stage Class H power amplifier for live performances, touring sound systems, or fixed PA installations? AUWAY Audio offers four AS Series models with different output ratings to support a variety of high-power sound reinforcement requirements.
Share your speaker impedance, required amplifier power, application, installation requirements, and purchasing quantity. Contact AUWAY Audio to compare AS Series models and request a quotation for your professional audio project.
