Sony WHG-CX5iP. RMS rated power: 50 W, Peak Music Power Output (PMPO): 550 W. Speaker type: 2-way, Number of loudspeakers: 2 pcs, Woofer size: 80 mm. Playback disc formats: CD audio. Audio formats supported: AAC, MP3, WMA. Supported radio bands: FM, Tuner type: Digital