Philips MMS322/27, 2.0 channels, Wired, 40 W, 50 - 20000 Hz, Black, Silver Philips MMS322/27. Recommended usage: Universal. Audio output channels: 2.0 channels. Connectivity technology: Wired. RMS rated power: 40 W, Frequency range: 50 - 20000 Hz. Product colour: Black, Silver