KEF Q550

Pre owned. In excellent condition. Free from any visible signs of wear. Supplied with original packaging.

The KEF Q550 are 2.5-way floorstanding loudspeakers that embody the evolution of the British brand’s historic Q Series, designed to achieve a balance between refined build quality, advanced technology, and an engaging, precise sound performance.

The design is based on the iconic Uni-Q coaxial system, here further refined with a 25 mm aluminum dome tweeter integrated into a 130 mm aluminum midrange driver. This configuration allows for a more uniform sound dispersion and improved stereo imaging coherence.

The speaker also features a 130 mm aluminum active woofer complemented by two passive radiators of the same size. This arrangement helps extend low-frequency response and enhances bass performance while maintaining relatively compact cabinet dimensions for its category.

The system delivers a wide and well-controlled frequency response, with solid and extended bass performance and a particularly well-resolved midrange, where voices and instruments are reproduced with naturalness, clarity, and a realistic sense of presence.

High frequencies are detailed and well integrated into the overall sonic spectrum, offering clarity and precision without becoming fatiguing. The controlled dispersion of the coaxial system helps maintain a stable and believable soundstage even off-axis.

From a construction standpoint, the Q550 features a solid cabinet with internal reinforcement and careful attention to vibration control and component layout, while the crossover is designed with a relatively simple yet effective approach, consistent with the brand’s use of increasingly linear driver technologies.

In-room performance shows good integration between direct sound and reflected sound, with particularly strong midrange reproduction and a well-present bass response when properly positioned. The power handling allows for high listening levels without noticeable compression.

Overall, the KEF Q550 stands out for its balanced, dynamic, and modern sound signature, with a strong focus on tonal coherence and the ability to reproduce a wide and well-structured soundstage. It represents a mid-range solution capable of approaching higher-end performance thanks to technology derived from the brand’s flagship models.

Technical Specifications:

• Type: 2.5-way floorstanding loudspeaker; mechanical bass reflex loading
• Recommended amplifier power: 15–130 W RMS
• Sensitivity: 87 dB (2.83 V/1 m)
• Frequency response: 58–28,000 Hz ±3 dB; low-frequency extension down to 45 Hz @ -6 dB
• Maximum undistorted output: 110 dB
• Impedance: 8 Ω nominal; 3.7 Ω minimum
• Crossover frequency: 2.5 kHz
• Tweeter: 25 mm aluminum coaxial dome
• Midrange/Midwoofer: 130 mm aluminum coaxial driver
• Woofer: 130 mm aluminum
• Passive radiators: 2 × 130 mm aluminum
• Dimensions (W × H × D): 180 × 843 × 278 mm; with base and feet 299 × 926 × 310 mm
• Weight: 14.5 kg (each)