EAW UXA4403 Power Amplifier for Installations

EAW UXA4403 Installation Amplifier — Integrated Power and DSP for Fixed Installations

The EAW UXA4403 is a 4-channel installation power amplifier built on Pascal technology, delivering up to 3200 W of total system power in a 2U chassis. It ships with rack ears ready for standard 19" equipment racks and pairs directly with EAW installation loudspeakers, with pre-loaded Greybox tunings recalled via network connection. This model is the right choice for AV integrators who need a single amplifier platform covering multi-zone speech, music and program material in commercial and institutional venues.

Pascal Power, EAW Greyboxes and On-board DSP

What sets this amplifier apart is the tight integration with EAW's loudspeaker library — every unit ships with Greybox tunings pre-loaded for EAW installation products. The Pascal power module pairs with UMAC™ Class D output circuitry, while configurable GPIO, S/PDIF sync and a web-page interface (wired or wireless) give installers remote control without a dedicated control system.

Technical Specifications — Power, Signal Quality and Connectivity

The headline numbers below come straight from EAW's published spec sheet and define what the amplifier can deliver into real-world loudspeaker loads.

• Total System Power: 3200 W — drives full-range EAW cabinets from one 2U chassis.
• Output Power: 4 x 1200 W @ 2.7 Ω · 4 x 800 W @ 4 Ω · 4 x 400 W @ 8 Ω · 2 x 2500 W bridged @ 4 Ω · 2 x 1500 W @ 100 V (BTL) — covers low-impedance and constant-voltage lines.
• Signal-to-Noise Ratio: > 108 dB (A-weighted, 20 Hz – 20 kHz) — quiet for speech-critical rooms.
• THD+N: < 0.05% (20 Hz – 20 kHz, 8 Ω load) — clean at typical operating levels.
• Frequency Response: 20 Hz – 20 kHz (±0.5 dB, 8 Ω load) — full-bandwidth coverage for music and program content.
• Inputs / Outputs: 4 Phono inputs / 4 Euroblock outputs — multi-zone routing from a single frame.

Designed for AV Integrators and Fixed Installation Projects

The UXA4403 is built for AV system designers and installers specifying EAW loudspeakers into commercial and institutional venues. Its 4-in / 4-out architecture suits multi-zone builds — a main sanctuary plus overflow rooms, or a hotel lobby, restaurant and conference area fed from one rack. The pre-loaded Greybox library removes the need to commission DSP from scratch, while the web interface lets a tech fine-tune levels and routing from a laptop or tablet. Bridged 70 V and 100 V outputs make the same amplifier useful for long cable runs to distributed ceiling speakers.