Professional 4000 W Stereo Power Amplifier with ATR (Accelerated Transient Response) Technology · EUROPOWER EP4000 · Remarkable Ease-of-Use · Accelerated Transient... 4,000-Watts of output power, the EP4000 is the perfect amplifier for a wide range of the most-demanding audio applications. Try one today, and find out why the EUROPOWER EP4000 is admired by professionals every – not just for performance and durability, but also the astoundingly-affordable price tag