Audac EPA104 Quad-Channel Class-D Amplifier 4 x 100W with Crossover

The EPA104 Quad-Channel Class-D Amplifier is a high-performance, energy-efficient audio solution designed for both fixed and mobile installations. Delivering 4 x 100W at 4Ω stereo (or 2 x 200W at 8Ω bridge), this compact 1U rack amplifier combines outstanding sound quality with advanced Class-D technology. Its integrated active crossover network makes it a complete solution for compact stereo applications paired with a bass cabinet.

The EPA104 automatically switches to a standby mode consuming less than 1W when no audio signal is detected, ensuring energy efficiency. Its fully passive cooling system eliminates the need for fans, reducing maintenance and enhancing reliability. The amplifier's robust steel construction and lightweight 4.5 kg design make it perfect for 19” rack mounting.

Featuring four independent channels, the EPA104 supports two stereo setups or bridged configurations. It includes advanced protection circuits to guard against DC malfunctions, short circuits, overheating, and overload. The amplifier offers a wide frequency response of 20 Hz - 20 kHz, with a signal-to-noise ratio exceeding 90 dB and low distortion (THD+N < 0.1%).

Inputs are handled via balanced 3-pin XLR connectors with 0 dB sensitivity and 12 kΩ impedance, while outputs use 2-pin Euro Terminal Blocks (5.08 mm pitch). The universal 100-240V AC power supply ensures compatibility worldwide, with a maximum power consumption of 188W. Operating reliably in temperatures from 0° to 40°C at up to 95% humidity, the EPA104 is built for demanding environments.

Whether for professional audio installations, live sound, or mobile setups, the EPA104 delivers exceptional performance, efficiency, and versatility in a sleek, black-finished package.