KEF R400b
Best compact subwoofer for music lovers seeking refined aesthetic integration.
A compact, musically inclined subwoofer that prioritizes tight, agile bass over raw power. Its sleek design ensures it fits into stylish living spaces without the visual clutter of traditional, oversized bass units.
$1699.99
at
SoundStage! Network
More R Series options
Who it's for
- Minimalists seeking deep bass without sacrificing floor space
- Design-conscious listeners who value aesthetic integration and durability
- Audiophiles prioritizing speed and accuracy over raw cinematic boom
Who should skip it
- Home cinema enthusiasts wanting floor-shaking sub-bass for action movies
- Budget-aware buyers looking for the best performance-to-dollar ratio
- Tech-savvy users who want automated calibration and smartphone control
Performance breakdown
Bass Agility
Force-canceling drivers deliver exceptionally fast, tight, and responsive low-end transients.
Cabinet Rigidity
Sealed design eliminates unwanted resonance, keeping the sound clean and focused.
Power Efficiency
Dual Class-D amplifiers provide substantial, consistent output without excessive heat buildup.
Form Factor
Compact footprint fits easily into tight spaces without sacrificing sonic depth.
Low-Frequency Extension
Reaches deep into the sub-bass range for authoritative, cinematic rumble.
Integration Ease
Straightforward setup makes blending with existing speakers a seamless process.
Key Specs
Weight
21.5 kg
Dimensions
365 x 330 x 351 mm
Power Output
500 watts
Frequency Response
26Hz - 140Hz
Driver Size
9 inches
Connectivity
RCA
Amplification
Built-in Class-D
Enclosure Type
Sealed
What Reviewers Say
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