Behringer Europower EP4000 PA AmplifierEUROPOWER EP4000 The EP4000 builds on the incredible legacy of our EP2500, which is one of the best selling power amps in the industry. Our proprietary Accelerated Transient Response (ATR) Technology gives the EP4000 the massive power reserves needed for deep and impactful bass response, which translates into a more natural sound quality that will bring your audience to its feet and keep them there! With an amazing 4,000 Watts of output power (2 x