KEF C3. System type: 2.0 system, Recommended usage: speaker set unit, Speaker placement: Floor, Tabletop/bookshelf. RMS rated power: 125 W, Frequency range: 54 - 40000 Hz, Impedance: 8 Ом. Amplifier output power: 125 W. Connectivity technology: Wired. Width: 177 mm, Depth: 256 mm, Height: 290 mm