KEF X300A Bookshelf Speakers

Why Buy New is pleased to offer for sale this brilliant pair of KEF X300A Bookshelf Speakers.

They include the original box and packaging and come with 2 power cables, a USB Speaker Link Cable, and a USB Cable.

This has been tested and is in full working order. This is being sold with our own 3 month warranty.

The cosmetic condition is good. There are a few minor marks. There are some small marks on the drivers (this does not affect performance) Please see the condition in the images.

FREE national courier delivery.

Why Buy... from us?
Because all of our items go through a full inspection, get serviced (if required), PAT tested for electrical safety, deep cleaned and all come with a warranty. We are 100% committed to customer care and are always on hand pre or post-delivery for technical help and advice.

KEF X300A Powered Speakers

Overview

The KEF X300A is a high-fidelity, powered 2-way digital speaker system designed to deliver exceptional sound quality for music, movies, and games. With direct USB connectivity and audiophile-grade components, it’s ideal for use with your computer, laptop, tablet, smartphone, or MP3 player.

Each speaker is equipped with two dedicated Class AB amplifiers — one for the woofer and one for the tweeter — ensuring accurate, detailed audio reproduction with minimal distortion.

Key Features

• Bi-Amplified Design
  Each speaker includes:
  50W amplifier for 5.25" woofer (LF/MF)
  20W amplifier for 1" aluminium dome tweeter (HF)
• High-Resolution USB Audio
  Direct connection via USB 2.0
  Supports up to 24-bit / 96 kHz digital-to-analog conversion
• Adjustable EQ Settings
  Rear balance switch to optimize sound for different placements:
  On desk
  Near wall
  In open space
• Analog Input Option
  3.5mm stereo input for smartphones, tablets, or MP3 players
  
  

Specifications:

• System Type: 2-way bass reflex
• Drivers:
  HF: 1" (25 mm) vented aluminium dome
  LF/MF: 5.25" (130 mm) magnesium/aluminium alloy
• Frequency Response: 58 Hz – 28 kHz (±3 dB)
• Frequency Range: 49 Hz – 45 kHz (-6 dB)
• Max Peak SPL: 104 dB
• Amplifier Type: Twin Class AB
• Amplifier Power:
  LF: 50W
  HF: 20W
• Power Requirements: 
  US/JP: 100–120V AC, 50/60 Hz
  EU/UK: 220–240V AC, 50 Hz
  China: 220–230V AC, 50 Hz
• Analog Input: 3.5 mm stereo jack (AUX)
• Digital Input: USB 2.0 (Mini USB Type B)
• Bit Depth: Up to 24-bit
• Sampling Rate: Up to 96 kHz (source-dependent)
• Controls: Balance switch, system volume control
• Internal Volume: 1.7 cubic feet (4.7 L)
• Dimensions (W × H × D):
  Without heatsink: 280 × 180 × 215 mm
  With heatsink: 280 × 180 × 243 mm
• Weight: 7.5 kg per speaker