Short answer: the KEF Q11 Meta. It ranks #103 of 188 floorstanding speakers by sound quality (rated 4.0/5) at $2,499.98 and is still sold new; the Infinity Reference 253 ranks #148 (rated 3.5/5) and is discontinued, so it is only an option used.
The KEF Q11 Meta is the more accurate, deeper-bass option. Three-way tower design with a coaxial layout: a 3/4” aluminum dome tweeter (with KEF’s Metamaterial Absorption Technology behind it) mounted at the center of a 4” mid-range, plus three 6.5” bass drivers. Its measured preference score, a predictor of how neutral it sounds, is 6.72 against 5.43 for the Infinity Reference 253. Its bass reaches about 60Hz before falling 3dB, against 78Hz for the Infinity Reference 253. The catch: Genuinely dark-sounding on raw on-axis measurement, and needs a typical room with sidewall reflections (within about 6 feet/2 meters) to sound properly neutral: in a large room with little sidewall interaction, it may sound too dull for some listeners.
The case for the Infinity Reference 253: Horizontal beamwidth of about ±60 degrees is fairly smooth and well controlled. The tradeoff: 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 Q11 Meta. It is rated higher for sound quality; the Infinity Reference 253 is no longer sold new.
Still deciding? The full Passive Home rankings cover every ranked option.
Specifications Side By Side
| KEF Q11 Meta | Infinity Reference 253 | |
|---|---|---|
| Price | $2,499.98 per pair | $400 per pair used, Discontinued |
| Ranked | #103 of 188 in Large Size Floorstanding Speakers | #148 of 188 in Large Size Floorstanding Speakers |
| Bass Extension (-10dB) | 29Hz (measured, Erin’s Audio Corner) | 38Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 60Hz (measured, Erin’s Audio Corner) | 78Hz (measured, Audio Science Review) |
| Drivers | 25mm tweeter + dual 165mm drivers | Dual 5.25” (130mm) CMMD™ woofers, 5.25” (130mm) flat-piston CMMD™ midrange, 1” (25mm) CMMD™ tweeter |
| Weight | 106.9 lbs (48.5 kg) | 39.2 lbs (17.8 kg) each |
| Sensitivity | 88.6dB (measured, Erin’s Audio Corner) | 86.9dB (measured by Audio Science Review; 88dB manufacturer specified) |
| Impedance | 4 ohms nominal (3.2 ohms minimum, measured, Erin’s Audio Corner) | 6 ohms |
| Dimensions | 43.8”H x 12.5”W x 15”D (1112.8 x 317.5 x 381.0 mm) | 40.3”H x 6.8”W x 12.4”D (1023.6 x 172.7 x 315 mm) |
| Woofer Cabinet | ported, rear | ported, rear |
| Spinorama Preference Score | 6.72 | 5.43 (spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 8.03 | 7.31 (spinorama.org) |
| DIY Kit | No | No |
Related Speaker Comparisons
How KEF Q11 Meta compares with other leading options:
- KEF Q11 Meta vs KEF Blade Two Meta
- KEF Q11 Meta vs MoFi SourcePoint V10 Master Edition
- KEF Q11 Meta vs MoFi SourcePoint 888
- KEF Q11 Meta vs Revel F328Be
- Radiant Acoustics Clarity 66 vs KEF Q11 Meta
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.
As an eBay Partner, we may be compensated if you make a purchase.
The Two Speakers In Full
KEF Q11 Meta: $2,499.98 per pair Amazon eBay
Same family: the KEF Q1 Meta (smallest bookshelf, rated 3.6/5), the KEF Q4 Meta (bookshelf, estimated 3.4/5), the KEF Q3 Meta (bookshelf, rated 3.4/5), the KEF Q Concerto Meta (largest bookshelf, rated 4.6/5), the KEF Q7 Meta (smaller floorstanding, ranked lower, estimated 3.5/5) and the KEF Q6 Meta (center, rated 3.9/5).
Pros: Three-way tower design with a coaxial layout: a 3/4” aluminum dome tweeter (with KEF’s Metamaterial Absorption Technology behind it) mounted at the center of a 4” mid-range, plus three 6.5” bass drivers. Extremely linear estimated in-room response when placed correctly, thanks to a deliberately declining on-axis response paired with well-controlled directivity: a technically sound design philosophy, even though it reads as “dark” in raw anechoic on-axis measurements. In-room bass extension to about 40-50Hz when placed near a wall, thanks to extended bass-shelf tuning. Sounds excellent whether pointed directly at the listener or toed out a full 30° parallel to the back wall: unusually flexible placement. More vertical listening leeway than standard non-coaxial two-way designs, thanks to the coincident tweeter/midrange. Distortion looks good at both 86dB and 96dB, and multitone distortion holds up well too. Comes with a plinth/outrigger kit for stability given its floorstanding height (about 43-44”). Measured bass extension of 60Hz (-3dB), with a measured sensitivity of 88.6dB.
Cons: Genuinely dark-sounding on raw on-axis measurement, and needs a typical room with sidewall reflections (within about 6 feet/2 meters) to sound properly neutral: in a large room with little sidewall interaction, it may sound too dull for some listeners. Must be placed close to a rear wall (about 1 foot) to get proper bass: pulling it out to the “standard” 3-foot audiophile recommendation causes bass output to drop off noticeably. Horizontal radiation of about ±50° is narrower than the reviewer’s preferred ±60°, giving a slightly less enveloping soundstage than some rivals. Notably darker than sibling KEF models in the same product family: measures 2-5dB less top-end energy than the KEF R3 Meta and a few dB less than the KEF Q Concerto Meta. Minor lingering resonances appear in burst decay measurements between 500Hz-1kHz. The tweeter shows some strain at very high output volumes, a limitation the reviewer notes is common even among more budget-friendly speakers generally.
Full KEF Q11 Meta review and specifications →
| Bass Extension (-10dB) | 29Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 60Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 43.8”H x 12.5”W x 15”D (1112.8 x 317.5 x 381.0 mm) |
| Drivers | 25mm tweeter + dual 165mm drivers |
| Impedance | 4 ohms nominal (3.2 ohms minimum, measured, Erin’s Audio Corner) |
| Sensitivity | 88.6dB (measured, Erin’s Audio Corner) |
| Spinorama Preference Score | 6.72 |
| Spinorama Preference Score with Perfect Sub | 8.03 |
| Weight | 106.9 lbs (48.5 kg) |
| 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
- Infinity Reference 253 vs Magnepan LRS+
- Infinity Reference 253 vs Polk Signature Elite ES60
- Infinity Reference 253 vs JBL Stage 2 280F
- Infinity Reference 253 vs Focal Aria Evo X N°2
- Infinity Reference 253 vs Polk T50
- Infinity Reference 253 vs SVS Ultra Evolution Pinnacle
- Infinity Reference 253 vs Definitive Technology BP-9020
- Infinity Reference 253 vs Sony SS-CS3
- See all 34 comparisons