The ProMedia 2.1 THX Computer Speaker System from Klipsch offers crisp and clear 2.1 channel audio output. The speakers have passed the stringent THX certification requirements so you will be sure you will be getting good sound. The speakers are ideally suited for use with a computer or MP3 player but are versatile enough to be driven by DVD players, televisions and game consoles. Each satellite speaker delivers a 55 watt output and the subwoofer delivers 50 watts. These speakers are perfect for the demanding listener. 2.1 Output The speakers provide stereo output with an additional subwoofer providing the bass. This gives you stereo sound with great depth that can be easily connected to any audio device with a 1/8" (3.5 mm) stereo minijack output. The satellite speakers feature both standard 3" woofers as well as MicroTractrix horns for more dynamic sound. THX Certification The speakers are certified through Lucasfilm's strict THX program, ensuring that they will provide you with extremely high-quality sound. Control Pod The control pod, attached to one of the satellite speakers, allows you to control your speakers, easily connect headphones and is also where you will plug your computer or stereo signal wires. Satellite Speakers Subwoofer Product Dimensions 8.23 x 5.12 x 5.59 inches Weight 24.7 pounds I do not have control pod, would need to be purchased separately.