The Audac EPA254 is a high-efficiency, quad-channel Class-D amplifier delivering 4 x 250W output at 4Ω, designed for professional audio installations in venues such as retail spaces, public facilities, corporate environments, clubs, bars, restaurants, and event spaces. Its compact 1U rack-mountable design and lightweight yet sturdy construction make it suitable for both fixed and mobile applications.
Constructed with a robust steel chassis, the EPA254 ensures durability and reliability. Its convection-cooled design eliminates the need for internal fans, reducing maintenance requirements and ensuring quiet operation. The front panel features individual channel volume controls and LED indicators for signal presence, clipping, and protection status, allowing for straightforward monitoring and adjustments.
| Specification | Details |
|---|---|
| Continuous Power (4Ω Stereo) | 4 x 250 W |
| Continuous Power (8Ω Stereo) | 4 x 130 W |
| Continuous Power (8Ω Bridge) | 2 x 500 W |
| Frequency Response (±3 dB) | 20 Hz - 20 kHz |
| Signal-to-Noise Ratio | > 90 dB |
| Total Harmonic Distortion (1 kHz) | < 0.1% |
| Crosstalk (1 kHz) | > 70 dB |
| Input Sensitivity | 0 dB (1V RMS) |
| Input Impedance | 12 kΩ balanced |
| Input Connectors | 3-pin XLR female |
| Output Connectors | 2-pin Euro Terminal Block (5.08 mm pitch) |
| Cooling | Convection cooled |
| Operating Temperature | 0 degrees ~ 40 degrees C at 95% humidity |
| Power Supply | 100-120V / 220-240V AC, 50/60 Hz |
| Power Consumption | 438 W |
| Standby Power Consumption | 0.7 W |
| Dimensions (W x H x D) | 482 x 44 x 330 mm |
| Weight | 6.25 kg |
The EPA254 is engineered for superior efficiency and audio fidelity, delivering clear, consistent audio performance across all four channels. Its low-noise operation and energy-efficient design make it ideal for installations where performance and reliability are essential. Integrators benefit from its simple setup and maintenance-free operation due to the fanless cooling system.
Q: Can the EPA254 be used in bridge mode?
A: Yes, the amplifier supports bridged operation, delivering up to 2 x 500W at 8Ω.
Q: Is the unit compatible with subwoofers?
A: Absolutely. The built-in active crossover allows for seamless subwoofer integration.
Q: Does it require fan maintenance?
A: No. The EPA254 is convection-cooled and operates silently without any internal fans.
Q: What protections are included?
A: The amplifier includes thermal, short circuit, DC, and overload protection circuits.
Q: Is it suitable for continuous commercial use?
A: Yes, the EPA254 is designed for demanding commercial audio applications with reliable continuous operation.
