KEF X300A Active Bookshelf Speakers


*Please check with our online customer service team or your local store for stock availability


With high resolution 96kHz/24-bit USB input and digitally connected hi-fi speakers, the X300A gives your music all the warmth, depth and detail of the original recording



    Bringing true hi-fi sound quality to the tracks you play from your computer, laptop, tablet, MP3 player or smartphone, X300A digital hi-fi speakers feature KEF's sophisticated Uni-Q array, driven by two dedicated on-board amps - one for each frequency range. With a high resolution 96kHz/24-bit USB input and simple digital speaker connection, even familiar tracks suddenly seem incomparably richer, subtler and more emotionally powerful.


    Like a professional studio monitor, each X300A speaker has two dedicated class AB amplifiers - one for LF/MF and one for high frequencies – to ensure accurate, distortion-free sound reproduction. Speaker hum and electromagnetic interference are minimised by using toroidal transformers of the type specified for audiophile grade hi-fi amps. With clean USB input and digital connection between speakers, the X300A system turns your desktop, laptop, tablet or other mobile device into a source of listening pleasure to true high fidelity standards.


    Setting up and configuring the X300A couldn’t be easier – all you have to do is connect the speakers to each other and to your chosen device by the USB ports and plug into a power source. That’s it. No software to load, no fiddly programming. A 3.5mm analogue connection is included to connect your smartphone or MP3 player.

    A balance switch on the back of the master speaker allows you to optimise the sound, whether you place the speaker on the desk, against a wall or in free space.

    * When your speakers are placed against a wall, you can insert the foam bung supplied into the rear reflex port for tighter, cleaner, bass performance.

    • Design: Two-way bass reflex
    • Drive Units:
      • Uni-Q driver array:
      • HF: 25mm (1in.) vented aluminium dome
      • LF/MF:130mm (5.25in.) magnesium/ aluminium alloy
    • Frequency Range: 49Hz - 45kHz (- 6dB)
    • Frequency Response: 58Hz - 28kHz (+/- 3dB)
    • Max Peak SPL: 104dB
    • Amplifier Type: Twin Class AB
    • Recommended Amplifier Power:
      • LF: 50W
      • HF: 20W
    • Analogue Input: AUX: 3.5mm stereo jack
    • Digital Input: USB 2.0: mini USB type B connector
    • Resolution: Up to 24-bit
    • Sampling Rate: Up to 96kHz, depending on source resolution
    • Controls:
      • Balance control
      • System volume control
    • Internal Volume: 7L
    • Power Input: 220-230VAC, 50Hz
    • Dimensions:
      • 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