Philips SPA5162B/94, 5.1 channels, 65 W, PC/Laptop, Black, 1.3 m, FM Philips SPA5162B/94. Audio output channels: 5.1 channels, RMS rated power: 65 W, Recommended usage: PC/Laptop. Amplifier class: A/B, Total Harmonic Distortion (THD): 10%, Signal-to-Noise Ratio (SNR): 60 dB. Satellite speakers RMS power: 35 W, Satellite speaker frequency range: 150 - 20000 Hz, Satellite speaker impedance: 4 Ω. Subwoofer RMS power: 30 W, Subwoofer frequency range: 40 - 150 Hz, Subwoofer impedance: 4 Ω. Power source: AC, AC input voltage: 230 V, AC input frequency: 50 Hz