Short answer: the KEF Q11 Meta for better sound quality, the Sony SS-CS3 for the lower price. The KEF Q11 Meta ranks #39 of 59 floorstanding speakers at $1249.99. The Sony SS-CS3 ranks #50 at $450, $799.99 cheaper.
What the KEF Q11 Meta offers: 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. 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 Sony SS-CS3: Affordable entry-level floorstanding tower offering solid sensitivity (88.6dB SPL at 2.83V/1m), making it easy to power with standard budget AVRs. The tradeoff: Severe cabinet and driver resonances plague the passband between 100Hz and 600Hz, imparting audible coloration and chesty resonances to male vocals and acoustic instruments.
Buy the KEF Q11 Meta if sound quality matters more than the price. Buy the Sony SS-CS3 if the price matters more than sound quality.
If sound quality matters at all to you, skip the Sony SS-CS3. It ranks near the bottom of the 59 floorstanding speakers, so look higher up the list instead.
Specifications Side By Side
| KEF Q11 Meta | Sony SS-CS3 | |
|---|---|---|
| Price | $1,249.99 | $450.00 Discontinued |
| Ranked | #39 of 59 in Large Size Floorstanding Speakers | #50 of 59 in Large Size Floorstanding Speakers |
| Bass Extension (-10dB) | 29Hz (measured, Erin’s Audio Corner) | 39Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 60Hz (measured, Erin’s Audio Corner) | 72Hz (measured, Erin’s Audio Corner) |
| Drivers | 25mm tweeter + dual 165mm drivers | 0.75 in. supertweeter, 0.98 in. polyester main tweeter, dual 5.12 in. MRC woofers |
| Weight | 106.9 lbs / 48.5 kg | 25.4 lbs / 11.5 kg each |
| Sensitivity | 88.6dB (measured, Erin’s Audio Corner) | 88.6dB (measured average, Erin’s Audio Corner) |
| Impedance | 4 ohms nominal (3.2 ohms minimum, measured, Erin’s Audio Corner) | 6 ohms nominal |
| Dimensions | 43.8"H x 12.5"W x 15"D (1112.8 x 317.5 x 381.0 mm) | 36.3"H x 9.1"W x 10.2"D (922 x 230 x 260 mm) |
| Woofer Cabinet | ported, rear | ported, front |
| Discontinued | - | Yes |
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- Definitive Technology BP-9020 vs KEF Q11 Meta
The Two Speakers In Full
KEF Q11 Meta: $1,249.99 Amazon
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”).
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 R3 Meta and a few dB less than the 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) |
| 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) |
| Weight | 106.9 lbs / 48.5 kg |
| Woofer Cabinet | ported, rear |
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Sony SS-CS3: $450.00 Discontinued
Pros: Affordable entry-level floorstanding tower offering solid sensitivity (88.6dB SPL at 2.83V/1m), making it easy to power with standard budget AVRs. Harmonic distortion remains reasonably low at moderate listening levels (86dB SPL) when high-pass filtered above 80-100Hz with a dedicated subwoofer. Front-ported design allows relatively close placement to front boundaries without excessive port occlusion.
Cons: Severe cabinet and driver resonances plague the passband between 100Hz and 600Hz, imparting audible coloration and chesty resonances to male vocals and acoustic instruments. Irregular frequency response peaks and dips make automated receiver room correction difficult to equalize effectively. Poor low-frequency extension (F3 of 72Hz, F10 of 39Hz) for a floorstander, combined with rapid distortion escalation below 80Hz at higher SPLs (96dB+). Supertweeter driver adds crossover complexity without providing audible high-frequency benefit within the human hearing spectrum. Discontinued.
Full Sony SS-CS3 review and specifications →
| Bass Extension (-10dB) | 39Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 72Hz (measured, Erin's Audio Corner) |
| Dimensions | 36.3"H x 9.1"W x 10.2"D (922 x 230 x 260 mm) |
| Discontinued | Yes |
| Drivers | 0.75 in. supertweeter, 0.98 in. polyester main tweeter, dual 5.12 in. MRC woofers |
| Impedance | 6 ohms nominal |
| Sensitivity | 88.6dB (measured average, Erin's Audio Corner) |
| Weight | 25.4 lbs / 11.5 kg each |
| Woofer Cabinet | ported, front |
As an eBay Partner, we may be compensated if you make a purchase.
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons