HP 400, 2.1 channels, 8 W, Universal, Black, 1-way, 4 W HP 400. Audio output channels: 2.1 channels, RMS rated power: 8 W, Recommended usage: Universal. Satellite speaker type: 1-way, Satellite speakers RMS power: 4 W. Subwoofer RMS power: 4 W. Power source: AC. Package width: 330 mm, Package depth: 250 mm, Package height: 170 mm