Philips SPA3250 Multimedia Speaker 2.0, 2.0 channels, Wired, 100 - 18000 Hz, Black Philips SPA3250 Multimedia Speaker 2.0. Recommended usage: PC / Laptop. Audio output channels: 2.0 channels, Number of drivers: 2. Connectivity technology: Wired. Frequency range: 100 - 18000 Hz. Product colour: Black