Short answer: both are discontinued, so this only matters if you are buying used. Used, the KEF R5 is the better pick: it ranks #40 of 188 floorstanding speakers by sound quality (rated 4.4/5), against #148 (rated 3.5/5) for the Infinity Reference 253. If you want one new, the Revel Concerta2 F35 ranks #30 at $900.
The KEF R5 is the better-sounding choice. Slim three-way tower with the acoustic advantages of KEF’s coincident Uni-Q midrange/tweeter: horizontal and vertical off-axis responses track the direct sound smoothly, producing stable imaging and a well-behaved directivity index. Watch for: The unusual gap between 77Hz F3 and 33Hz F10 indicates a gradual bass contour rather than flat deep-bass output; a subwoofer and roughly 80Hz high-pass are recommended for high-level playback.
Why pick the Infinity Reference 253: Horizontal beamwidth of about ±60 degrees is fairly smooth and well controlled. Watch for: CEA2034 spinorama and predicted in-room response both show elevated treble above 4kHz (“too hot”), a dip around 2kHz, and bass shelved down relative to the midrange.
Buy the KEF R5 only if you find one used in good condition; both are discontinued, and it is the better rated of the two. For a new speaker, start with the Revel Concerta2 F35 instead.
Want more options? Browse the full Passive Home rankings.
Specifications Side By Side
| KEF R5 | Infinity Reference 253 | |
|---|---|---|
| Price | $2,999 per pair Discontinued | $400 per pair used, Discontinued |
| Ranked | #40 of 188 in Large Size Floorstanding Speakers | #148 of 188 in Large Size Floorstanding Speakers |
| Bass Extension (-3dB) | 77Hz (measured, Erin’s Audio Corner) | 78Hz (measured, Audio Science Review) |
| Bass Extension (-10dB) | 33Hz (measured, Erin’s Audio Corner) | 38Hz (measured, Audio Science Review) |
| Sensitivity | Approximately 86dB/2.83V/1m (measured, Erin’s Audio Corner) | 86.9dB (measured by Audio Science Review; 88dB manufacturer specified) |
| Impedance | Approximately 3.5 ohms minimum near 150Hz (measured, Erin’s Audio Corner) | 6 ohms |
| Drivers | 1” aluminum tweeter coaxial with 5” midrange; dual 5.25” woofers | Dual 5.25” (130mm) CMMD™ woofers, 5.25” (130mm) flat-piston CMMD™ midrange, 1” (25mm) CMMD™ tweeter |
| Dimensions | 40.4”H x 6.9”W x 13.5”D | 40.3”H x 6.8”W x 12.4”D (1023.6 x 172.7 x 315 mm) |
| Weight | 59.5 lbs (27 kg) each | 39.2 lbs (17.8 kg) each |
| Woofer Cabinet | ported, rear | ported, rear |
| Spinorama Preference Score | 5.78 | 5.43 (spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 7.40 | 7.31 (spinorama.org) |
| DIY Kit | No | No |
Related Speaker Comparisons
How KEF R5 compares with other leading options:
- KEF Blade Two Meta vs KEF R5
- MoFi SourcePoint 888 vs KEF R5
- Revel F328Be vs KEF R5
- KEF R5 Meta vs KEF R5
- Revel F226Be vs KEF R5
Prices on this page were last checked October 9, 2026 at 8:01 AM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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The Two Speakers In Full
KEF R5: $2,999 per pair Discontinued eBay
Same family: the KEF R3 (bookshelf, rated 4.5/5), the KEF R7 (larger floorstanding, ranked lower, estimated 4.2/5), the KEF R11 (larger floorstanding, ranked lower, estimated 4.3/5) and the KEF R2c (center, rated 4/5).
Pros: Slim three-way tower with the acoustic advantages of KEF’s coincident Uni-Q midrange/tweeter: horizontal and vertical off-axis responses track the direct sound smoothly, producing stable imaging and a well-behaved directivity index. Erin measured deep low-frequency reach for the cabinet width (77Hz F3 but 33Hz F10) and less than 1% harmonic distortion at 86dB. At 96dB it remains clean when high-passed, and its mild response deviations are suitable for equalization because the radiation pattern stays orderly. Measured bass extension of 77Hz (-3dB), with a measured sensitivity of 86dB.
Cons: The unusual gap between 77Hz F3 and 33Hz F10 indicates a gradual bass contour rather than flat deep-bass output; a subwoofer and roughly 80Hz high-pass are recommended for high-level playback. Erin measured a minimum near 3.5 ohms around 150Hz, although most of the curve remains above 4 ohms, so amplifier quality still matters. Sensitivity is approximately 86dB/2.83V/1m. At 102dB, compression reaches roughly 1dB around 150Hz, showing the limits of the twin 5.25-inch woofers. This original model lacks the Meta version’s MAT rear-wave absorption. Discontinued.
Full KEF R5 review and specifications →
| Bass Extension (-10dB) | 33Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 77Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 40.4”H x 6.9”W x 13.5”D |
| Drivers | 1” aluminum tweeter coaxial with 5” midrange; dual 5.25” woofers |
| Impedance | Approximately 3.5 ohms minimum near 150Hz (measured, Erin’s Audio Corner) |
| Sensitivity | Approximately 86dB/2.83V/1m (measured, Erin’s Audio Corner) |
| Spinorama Preference Score | 5.78 |
| Spinorama Preference Score with Perfect Sub | 7.40 |
| Weight | 59.5 lbs (27 kg) each |
| Woofer Cabinet | ported, rear |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Infinity Reference 253: $400 per pair used Discontinued eBay
Same family: the Infinity Reference R152 (smaller bookshelf, rated 3.8/5), the Infinity Reference R162 (larger bookshelf, rated 3.8/5), the Infinity Reference R263 (larger floorstanding, ranked higher, rated 4.4/5), the Infinity Reference RC252 (smaller center, rated 4.4/5) and the Infinity Reference RC263 (larger center, rated 4.2/5).
Pros: Horizontal beamwidth of about ±60 degrees is fairly smooth and well controlled. Really amazing value for the performance. Measured bass extension of 78Hz (-3dB), with a measured sensitivity of 86.9dB.
Cons: CEA2034 spinorama and predicted in-room response both show elevated treble above 4kHz (“too hot”), a dip around 2kHz, and bass shelved down relative to the midrange. Vertical directivity requires staying at or below the tweeter axis for accurate tonal balance. Distortion at 96dB SPL/1m is broadly elevated above the reviewer’s audibility threshold across much of the midrange. Minimum impedance dips to 4.2 ohms. Discontinued.
Full Infinity Reference 253 review and specifications →
| Bass Extension (-10dB) | 38Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 78Hz (measured, Audio Science Review) |
| DIY Kit | No |
| Dimensions | 40.3”H x 6.8”W x 12.4”D (1023.6 x 172.7 x 315 mm) |
| Drivers | Dual 5.25” (130mm) CMMD™ woofers, 5.25” (130mm) flat-piston CMMD™ midrange, 1” (25mm) CMMD™ tweeter |
| Impedance | 6 ohms |
| Sensitivity | 86.9dB (measured by Audio Science Review; 88dB manufacturer specified) |
| Spinorama Preference Score | 5.43 (spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 7.31 (spinorama.org) |
| Weight | 39.2 lbs (17.8 kg) each |
| Woofer Cabinet | ported, rear |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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