Philips SPA1310 Multimedia Speaker 2.1, 2.1 channels, 12.6 W, Universal, Black, 24 W, 1.5 m Philips SPA1310 Multimedia Speaker 2.1. Audio output channels: 2.1 channels, RMS rated power: 12.6 W, Recommended usage: Universal. Satellite speaker type: 1-way, Satellite speakers RMS power: 3.5 W. Subwoofer RMS power: 5.6 W. Power source: AC, AC input voltage: 220 V, AC input frequency: 50 Hz. Connectivity technology: Wired, Line-in connectivity: 3.5 mm