EAW UXA4403
4-Channel Professional Multipurpose Installation DSP Power Amplifier
The EAW UXA4403 stands as a high-performance benchmark in mid-to-high-power integration, engineered to bring uncompromising, concert-level sonic fidelity into permanent entertainment installations, premium commercial projects, and high-end residential networks. Housed in a space-conscious full-rack 2U frame, the UXA4403 blends advanced multi-zone signal management with an ultra-reliable, high-headroom Class D power block. It provides sound contractors and system designers with a singular, versatile powerhouse capable of handling heavy acoustic demands while retaining clinical signal purity.
Scalable Power & Direct Hybrid-Z Distribution
Built on industry-proven Pascal amplifier electronics, the EAW UXA4403 features a robust output infrastructure engineered to handle diverse loudspeaker configurations simultaneously. Firing across all four independent output channels, it safely unleashes an impressive 4 x 1200 Watts at 2.7 ohms, 4 x 800 Watts at 4 ohms, or 4 x 400 Watts at 8 ohms.
For high-demand subwoofer deployments or heavy fills, the channels can be smoothly bridged to output a massive 2 x 2500 Watts into 4 ohms. Breaking down the barrier between performance audio and distributed commercial architecture, the UXA4403 also natively drives high-impedance speaker chains—offering 2 x 1200 Watts for 70V systems or 2 x 1500 Watts for 100V lines via bridged BTL mode. With an absolute maximum peak rating providing up to 5000 Watts of dynamic headroom, this amplifier ensures low-frequency impacts and sudden transients are delivered without a hint of limiting distortion or clipping fatigue.
Factory Integrated Greybox Speaker Intelligence
The definitive engineering asset of the EAW UXA4403 is its preloaded library of proprietary EAW Greybox™ loudspeaker settings. Integration professionals no longer need to spend hours searching for, downloading, or manually inputting filter sets. From a simple web interface dropdown, technicians can assign precise crossover boundaries, specialized FIR and IIR correction filters, time-alignment matrices, and tailored driver protection algorithms. This guarantees that every passive EAW loudspeaker paired with the unit performs exactly as acoustically intended while remaining bulletproof against overdrive.
Smart Processing and Flexible Integration Tool Kit
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UMAC™ Class D & UREC™ Switching Power: Incorporates a specialized full-bandwidth PWM modulator that limits harmonic distortion to under 0.05%. Backed by universal power factor correction (PFC), the power supply draws current smoothly and evenly from 100V to 240V AC, cutting down on main distribution infrastructure requirements.
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Wireless Web UI & Control App: Features an integrated, secure on-board Wi-Fi access point and standard web server. System calibration, zone configurations, delay times, and prioritized priority ducking parameters can be customized from any smartphone, tablet, or laptop browser without needing an external network router.
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Resolution™ 2 Network Command: For complex, large-scale systems, networks of UXA series amplifiers can be grouped, monitored, and automated via EAW’s central Resolution™ 2 software suite.
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Advanced S/PDIF Sync & Loop Linking: Features a dedicated stereo S/PDIF digital input and output linking loop. Multiple UXA4403 units can be daisy-chained and synchronized digitally, ensuring identical signal timing across massive multi-amplifier networks.
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Integration-Centric Infrastructure: Outfitted with an expandable, configurable GPIO terminal for remote control system integration, a tamper-proof front panel to protect settings in public venues, and an eco-conscious architecture compliant with strict ErP and EnergySTAR standards. (Note: The optional UXA4403D variant incorporates a 4-channel Dante network transport interface.)
For over 40 years, EAW have pioneered sound system technology in the live and installed sound markets. Providing high quality products for a wide range of applications. EAW is an American based company that was founded in 1978. A detailed company history with its legacy can be found on their website at this link: EAW History. They have a dedicated team of industry professionals, passionate about providing professional loudspeakers and sound systems.
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