KEF X300A Speakers System type Two-way bass reflex Drive units Uni-Q driver array:HF: 25mm (1in.) vented aluminium domeLF/MF: 130mm (5.25in.) magnesium/aluminium alloy Frequency response(+/- 3dB) 58Hz - 28kHz Frequency range(- 6dB) 49Hz - 45kHz Max peak SPL 104dB Amplifier type Twin Class AB Amplifier power LF: 50WHF: 20W AC power input US/JP versions: 100-120 VAC, 50/60 HzEU/UK/China versions: 220-240 VAC, 50Hz Analogue input AUX: 3.5mm stereo jack Digital inputResolutionSampling rate USB 2.0: mini USB type B connectorUp to 24-bitUp to 96kHz, depending on source resolution Controls Balance controlSystem volume control Internal volume 4.7 l Finish Gunmetal Dimension (H x W x D) Without heatsink:280 x 180 x 215mm (11.0 x 7.1 x 8.5 in.)With heatsink:280 x 180 x 243mm (11.0 x 7.1 x 9.6 in.) Weight 7.5kg (16.5lbs) per speaker It is recommended that the X300A be used with Windows 7 and Mac OS 10.6 & above operating systems.
