The 2X2AMP-CAT61SVC is the perfect audio partners for projectors. By placing the amplifier within inches of the speaker, maximum damping control of the speaker due to low source impedance is achieved. The result is optimum high fidelity reproduction and response without an external amplifier. With up to 20 watts of class AB power delivered directly to the speaker, OWI's self-amplified speakers are powerful enough to drive three additional non-amplified speakers.