Harman/Kardon HKTS 9. Audio output channels: 5.1, RMS rated power: 600 W, Recommended usage: Home theatre. Satellite speaker type: 2-way, Satellite speakers RMS power: 320 W, Satellite speaker frequency range: 45 - 20000 Hz. Center speaker type: 2-way, Center speaker RMS power: 80 W, Center speaker impedance: 8 Ом. Subwoofer RMS power: 200 W, Subwoofer driver size: 203.2 mm (8 "). Power source: AC