dB Technologies ES503 Stereo White, Compact active loudspeaker system, Flexible use, Integrated 3-channel digital power amplifier with 1000 W output power, Can be used as a classic stereo system with one subwoofer and two satellites, or as a powerful mono system by means of the mechanical connection of the two satellites, Can also be used as a powerful stereo system with two coupled ES503 systems, Matching protective cover for the subwoofer: Art. #373941#, matching protective cover for the top: Art. #373942# (both not included), Colour: White@+@+*ES503 Sub:*@+@+, Driver: 12