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.
Carrying three times more data than the audio on a normal CD, the 24-bit/96kHz USB input allows the X300A system to reproduce the full depth and complexity of high resolution music files, and with distortion-free USB connection throughout, nothing is lost from the original source. In addition, a high quality DAC in each speaker virtually eliminates interference by separating decoding from playback. All this high end technology is complemented by the award-winning Uni-Q ‘point source’ driver array derived from KEF’s flagship speaker, the Blade. The result is a spacious, accurate and exquisitely detailed sound field, whatever device your music is played from.
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.
|System type||Two-way bass reflex|
|Drive units||Uni-Q driver array:
HF: 25mm (1in.) vented aluminium dome
LF/MF: 130mm (5.25in.) magnesium/
|58Hz - 28kHz|
|49Hz - 45kHz|
|Max peak SPL||104dB|
|Amplifier type||Twin Class AB|
|Amplifier power||LF: 50W
|AC power input||US/JP versions: 100-120 VAC, 50/60 Hz
EU/UK/China versions: 220-240 VAC, 50Hz
|Analogue input||AUX: 3.5mm stereo jack|
|USB 2.0: mini USB type B connector
Up to 24-bit
Up to 96kHz, depending on source resolution
System volume control
|Internal volume||4.7 l|
(H x W x D)
280 x 180 x 215mm (11.0 x 7.1 x 8.5 in.)
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.|
Buying a KEF open box product is a great way to get "like-new" products at a considerable savings. Every product has been thoroughly tested, cleaned and otherwise renewed to original condition. Next it’s repackaged in a new box with all original accessories included. And for your piece of mind and protection, your purchase is covered by a full 5 year parts and labor warranty (1 year on electronics) valid at any authorized KEF repair center (you can look-up locations online here or call 732-683-2356)
Most units are Cosmetically in Mint Condition (graded a 9 or higher on a scale of 1-10). Very minor signs of wear (light surface scuffs or minor scratches) may be present, although most units show little or no signs of any usage. We DO NOT sell products that are cosmetically damaged (cracked cabinets, broken grilles, heavy scratches, or physically abused) unless noted in the description. Unfortunately, we can’t provide actual photos of each unit or pick the best one for anyone, as they are all randomly chosen from our factory sealed boxes.
Average Customer Rating: (1 Review) Write a Review (requires login)5.0 1 KEF X300A 5.25" 2-Way Digital Hi-Fi Speaker System Gunmetal Pair
Excellent Value!KEF X300A 5.25" 2-Way Digital Hi-Fi Speaker System Gunmetal Pair
"The KEF X300As are one of the most thrillingly enjoyable speaker systems we’ve heard in quite some time. Its combination of class-leading transparency, lively and detailed tonal balance, placement versatility, and room-filling capabilities really had us over the moon. Add in their wonderful aesthetics, ease of use and self-contained design, and it becomes damn near impossible to think of anyone who wouldn’t enjoy these KEFs."
This comment echoes my experience with this amazing system. Enormously satisfying purchase! I listen to it at my office using an iPad or iPhone. You can get what is called a " Lightening to USB camera adapter", from Apple. This allows you to use the superior digital USB connection, while using these devices ( instead of the 3.5mm analog headphone jack). This puts it the iOS devices on par with using a computer as a music source ( which naturally connects via USB to this system). I usually listen to TIDAL.com loss-less recordings as a source. This has provided me endless hours of enjoyable high quality music.