Best KEF Speakers: All 29 Ranked

This page lists all 29 KEF speakers ranked on this site, each showing where it places in its category. KEF’s strength here is passive speakers, where it takes second place in both the bookshelf and floorstanding rankings.

Uni-Q is the reason the measurements look the way they do. KEF mounts the tweeter in the acoustic centre of the midrange cone, so both drivers radiate from the same point. The practical result is unusually consistent off-axis behaviour: the sound arriving at your ears after bouncing off the side walls resembles the sound arriving directly, which is most of what makes a speaker sound the same across a room and across seats. It is the single most consistent engineering advantage in this list, and it shows up in the directivity plots on nearly every KEF entry.

The trade is bass and price. KEF bookshelf speakers are consistently bass-light for their size. The LS50 Meta reaches an F3 of 67 Hz and an F10 of 42 Hz, which is to say it does not meaningfully play below 50 Hz in-room. That is a design choice in service of the midrange, not a defect, but it means most KEF bookshelves want a subwoofer, and you should budget for one. See the subwoofer buyer’s guide.

Price is the other constraint. The Reference 1 Meta is roughly four times the cost of the similarly sized R3 Meta, which measures very nearly as well. The R and Q series are where the value sits.

The active and lifestyle range (LSX, LS60, KC62) puts Uni-Q into powered and streaming products. They are convenient and well-finished; the KC62 in particular is bought for its size rather than its output, and measures accordingly.

Prices on this page were last checked September 8, 2026 at 6:02 PM 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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Medium Size Portable Bluetooth Speakers

Ranked #76 of 142 in Medium Size Portable Bluetooth Speakers - KEF Muo gen2: $249.99 Amazon eBay

Pros: KEF seemed to have fixed the rolled off treble and overall balance

Cons: Lacking deeper bass. Very thuddy bass. Appears to be the exact same hardware but with updated tuning. Bass distorts as volume increases, and the claimed 43Hz extension is really only audible at low listening volumes, with a few seconds of lag after volume changes. Loses most of its bass off-axis. Customer reviews are mixed, ranging from praise for detail at low volume to complaints of a boxy, hollow sound.

Full KEF Muo gen2 review and specifications →

App	Yes
Battery Life	24 hours (Manufacturer specified)
Bluetooth Codecs	SBC, aptX Adaptive up to 48 KHz 24 bit
Bluetooth Version	5.4
Digital Aux Input	Yes (USB-C)
Dimensions	8.5" x 3.2" x 2.3" (216 x 82 x 59 mm)
Drivers	1x 58x117mm racetrack woofer, 1x 20mm tweeter
Frequency Response	43Hz - 20kHz (Manufacturer specified)
IP Rating	IP67
Max Volume	90dB
Omnidirectional	No
Output Power	40W
Party Mode	Yes (Auracast)
Stereo	Yes
TWS	Yes
Weight	1.6 lbs / 740 g

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Links
- Official KEF Muo gen2 Product Page
Reviews, Comparisons and Sound Samples
- Joy & Oluv’Sone: KEF Muo - high fidelity portable speaker with bass that defies its size! More from Oluv’Sone →
Head-to-Head Comparisons

Medium Size Powered Bookshelf Speakers

Ranked #14 of 64 in Medium Size Powered Bookshelf Speakers - KEF LS50 Wireless II: $2,999.00 Amazon KEF Crutchfield eBay

Pros: Erin’s measurements give preference scores of 4.52 standalone and 6.59 with an ideal subwoofer, with a -3dB point around 51Hz. The coincident Uni-Q layout helps preserve tonal consistency across horizontal and vertical listening positions. Low listening-window narrow-band deviation of 0.308 supports relatively clean midrange reproduction. HDMI eARC and streaming functions make it a capable all-in-one stereo system.

Cons: The 3.0dB response span is good but not reference-leading, and dispersion still varies with frequency. Compact bass drivers limit deep-bass output. App placement adjustments are not the same as microphone-based automatic room correction. The price and primary/secondary architecture are practical trade-offs; neither driver geometry nor a single directivity statistic guarantees the best sound in every room.

Full KEF LS50 Wireless II review and specifications →

App	KEF Connect (placement EQ presets, source selection, firmware updates)
Bass Extension (-10dB)	41.5Hz (measured, spinorama.org)
Bass Extension (-3dB)	51.3Hz (measured, spinorama.org)
Bluetooth	Yes, 4.2
Dimensions	12" x 7.9" x 12.2" (305 x 200 x 311 mm) (12.0 x 7.9 x 12.2 in) each
Drivers	Uni-Q coincident array: 130mm aluminum woofer + 25mm MAT aluminum dome tweeter
EQ	Yes, fixed placement presets (desk/bookshelf/wall-mount) - no automatic room correction
Frequency Response	45Hz - 28kHz ±3dB
Inputs	HDMI eARC, optical, digital coaxial, 3.5mm analog, USB-A (service), Ethernet, RCA subwoofer out
Max SPL	108dB at 1m
Output Power	280W (LF) + 100W (HF) per speaker, bi-amped
Weight	44.3 lbs / 20.1 kg (44.3 lb) for the pair

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Links
- Official KEF LS50 Wireless II Product Page
Reviews, Comparisons and Sound Samples
- Erin’s Audio Corner Measurements (spinorama.org) More from Erin’s Audio Corner →
Head-to-Head Comparisons

Ranked #26 of 64 in Medium Size Powered Bookshelf Speakers - KEF LSX II LT: $449.99 Amazon eBay

Pros: The coincident driver provides useful consistency across listening positions, and the app offers placement and subwoofer adjustments. Erin’s measurements give preference scores of 3.93 standalone and 6.16 with an ideal subwoofer, with -3dB bass around 56Hz. HDMI and USB connectivity make it convenient for a small TV or desktop system.

Cons: The 3.4dB midrange response span and treble-region dips keep it below more neutral monitors. The existing review finds bass compression around 88-92dB/1m and rising distortion at higher levels, so the small drivers suit close listening rather than a large room. This LT version has no analog input; a turntable cannot plug straight into it.

Full KEF LSX II LT review and specifications →

App	No
Bass Extension (-10dB)	46Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	55Hz (measured, Erin's Audio Corner)
Bluetooth	No
Dimensions	9.5"H x 6.1"W x 7.1"D (241.3 x 154.9 x 180.3 mm)
Drivers	115mm (4.5in.) magnesium/aluminium alloy cone woofer, 19mm (0.75in.) aluminium dome tweeter
EQ	No
Inputs	Wifi, USB-C, HDMI, Optical, Bluetooth
Output Power	100w RMS Per Speaker
Outputs	RCA Subwoofer
Sensitivity	84dB (measured at 0.3V/1m, Erin's Audio Corner)
Weight	15 lbs / 6.8 kg

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Large Size Powered Floorstanding Speakers

Ranked #1 of 6 in Large Size Powered Floorstanding Speakers - KEF LS60: $5,999.99 Amazon Crutchfield eBay

Pros: Erin’s on-axis measurement combines a 1.9dB response span from 300Hz to 5kHz with a 7.22 ideal-subwoofer preference score, supporting even vocal and instrumental balance. Extended-mode bass reaches roughly 25Hz at -3dB. The coaxial Uni-Q arrangement maintains unusually consistent tonality across listening positions, while HDMI, digital and analog inputs plus network streaming make this a convenient complete music and TV system.

Cons: A diffraction dip around 9kHz can soften cymbal shimmer when aimed directly at the listener; 10-20 degrees of toe-out helps. DSP limiting reduces bass reach and dynamic output at high volume, so its deep low-level extension is not a promise of the same performance on loud peaks. App placement and tone controls are less flexible than parametric room correction. Each roughly 31kg tower is awkward to move.

Full KEF LS60 review and specifications →

App	Yes (KEF Connect)
Bass Extension (-10dB)	<20Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	23Hz (measured, Erin's Audio Corner)
Bluetooth	Yes (5.0 with SBC, AAC)
Bluetooth Codecs	SBC, AAC
DSP	Yes (Music Integrity Engine)
Dimensions	42.9"H x 8.3"W x 15.5"D (1089.7 x 210.8 x 393.7 mm)
Drivers	4 x 135 mm (5.25 in.) Uni-Core Force Cancelling Driver: woofers, 100 mm (4in.) aluminium cone midrange, 19 mm (0.75 in.) vented aluminium dome with Metamaterial Absorption Technology tweeter
EQ	Yes (Normal and Expert modes, room adaptation)
Frequency Response	31Hz - 24kHz (±3dB) (Manufacturer specified)
Inputs	Wifi, Optical, Digital coaxial, RCA, HDMI, Ethernet
Max SPL	111dB @ 1m (pink noise)
Output Power	700W (500W LF Class D + 100W MF Class D + 100W HF Class AB)
Outputs	Subwoofer RCA
Sensitivity	97.7dB (measured at 0.3V/1m, Erin's Audio Corner)
Streaming Services	Yes (AirPlay 2, Chromecast, Roon Ready, Spotify Connect, Tidal Connect, Amazon Music, Qobuz, Deezer)
Weight	69 lbs / 31.3 kg each
Wifi	Yes (dual-band)

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Medium Size Bookshelf Speakers

Ranked #4 of 87 in Medium Size Bookshelf Speakers - KEF LS50 Meta: $1,599.00 Amazon Crutchfield eBay

Pros: Uni-Q concentric driver mounts a 1” vented aluminum dome tweeter at the center of a 5.25” aluminum cone woofer, rated 79Hz-20kHz+. Speaker-to-speaker matching measured tight at roughly 0.5dB deviation between the pair tested, versus 2-3dB seen on some other speakers - likely why imaging stayed so precise. Imaging stays tight and focused even toed out, unlike most coincident designs where toe-out typically diffuses the image, giving more of an oval-shaped soundstage than a hard rectangular boundary. Horizontal and vertical directivity both hold to about ±50° at the -6dB point, so tonality stays consistent across roughly a 100° listening cone. The extended bass shelf is deliberately tuned for near-wall/boundary placement rather than the usual “pull it 3 feet into the room” advice, playing lower without excess boominess when placed close to a wall. At $1,000 (a frequent sale price versus $1,600 list), called a no-brainer for a compact stand-mount speaker. Independent ASR Klippel measurements corroborate this: very good directivity with the on- and off-axis curves tracking closely, and a predicted in-room response the reviewer called “very close to ideal.”

Cons: F3 of 67Hz and F10 of 42Hz mean it doesn’t get much below 50Hz in-room; a subwoofer is recommended for real bass. A 2-3dB scoop around 2-4kHz shows up in both the listening window and sound power measurements, matching a subjectively noticed lack of attack and vocal clarity that the reviewer wanted to correct with about 2dB of EQ. An on-axis diffraction dip around 8kHz smooths out with about 15° of toe-out (typical for concentric designs, but still present at 0°). Distortion is elevated at low frequencies since the single 5.25” cone shares surface area with the tweeter housing, reducing effective radiating area; multitone distortion crosses the 3% threshold at 96dB/1m, making roughly 88dB or below the safer output ceiling. Moderate sensitivity (~83dB average) needed 2-3dB more amplifier gain than typical in testing. Adding a subwoofer at an 80Hz crossover only helps lower-midrange distortion, not the elevated distortion in the 1-2kHz and above-5kHz regions. ASR’s own Klippel testing found the same pattern in starker terms: THD is very good at 86dB SPL/1m but climbs past 100% in the bass at 96dB SPL/1m, confirming this is not a near-field speaker for high-output bass-heavy material. Cumulative spectral decay (waterfall) also shows a couple of resonances lingering in the 1-2kHz region.

Full KEF LS50 Meta review and specifications →

Bass Extension (-10dB)	43Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	68Hz (measured, Erin's Audio Corner)
Dimensions	11.9"H x 7.9"W x 11"D (302 x 200 x 280.5 mm)
Drivers	130 mm (5.25 in.) aluminium cone woofer, 25 mm (1 in.) vented aluminium dome with Metamaterial Absorption tweeter
Impedance	8 ohms nominal (3.7 ohms minimum above 80Hz, measured by Erin's Audio Corner)
Sensitivity	83dB (measured average, Erin's Audio Corner; 85dB manufacturer specified)
Weight	17.2 lbs / 7.8 kg each
Woofer Cabinet	ported, rear

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Large Size Bookshelf Speakers

Ranked #3 of 131 in Large Size Bookshelf Speakers - KEF Reference 1 Meta: $9999.98 Kef eBay

Pros: Meta technology places a Helmholtz-style resonator behind the tweeter to absorb rear-radiated resonance, and pair matching is within about ±0.5dB - unusually tight for a passive speaker. Sounds most neutral pointed straight on-axis rather than toed out, with no 5-8kHz harshness of the kind that plagues many speakers marketed as “detailed.” One of the most three-dimensional soundstages the reviewer has heard from a passive speaker, beaten only by $13,000+ active Xmachina Pulsar MK2 monitors (though this speaker’s tonality was preferred). Distortion stays below 1% down to about 70Hz at 86dB, and below 1% to ~150Hz / below 3% to ~70Hz even at 96dB. High-frequency response holds essentially flat as volume increases - no audible crossover or voice-coil compression - giving strong dynamic range up to its output limit (about 98dB at 3.5 meters before the woofer starts running out of excursion). All-passive design still measures ±1.5dB from 80Hz to 16kHz with zero DSP. Swappable dual-port system (long port for near-wall placement, short port for out-into-the-room placement with more bass extension) lets you tune bass behavior to where the speaker actually sits.

Cons: At roughly $9,000/pair, nearly four times the cost of the similarly-sized KEF R3. Radiation narrows from about ±60° in the midrange to ±50° at high frequency - tighter than the reviewer’s ~70° preference (though wider than the R3’s ~±40°); toeing the speakers out for more width sacrifices treble energy that then needs EQ to restore. Moderate-to-low sensitivity (measured 83-84dB) calls for a solid amplifier. In-room bass only extends to about 40Hz, so a subwoofer is worth adding for bass-heavy material at higher volumes or listening beyond 3-4 meters. Minor directivity mismatch around 2kHz shows up in measurements, likely a vertical diffraction effect that wasn’t fully explained. Bass port choice (long vs. short) meaningfully changes the sound depending on placement, so the wrong port for your room can leave the bass sounding off until you experiment.

Full KEF Reference 1 Meta review and specifications →

Bass Extension (-10dB)	32Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	52Hz (measured, Erin's Audio Corner)
Dimensions	17.3"H x 8.1"W x 16.6"D (439.4 x 205.7 x 421.6 mm)
Drivers	165 mm (6.5 in.) aluminium cone woofer, 125 mm (5 in.) aluminium cone midrange, 25 mm (1 in.) aluminium dome with MAT tweeter
Impedance	4 ohms nominal, 2.9 ohms minimum (measured, Erin's Audio Corner)
Sensitivity	82.5dB (measured average, Erin's Audio Corner)
Weight	40.1 lbs / 18.2 kg each
Woofer Cabinet	ported, rear

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Ranked #10 of 131 in Large Size Bookshelf Speakers - KEF R3 Meta: $2,499.99 Amazon Crutchfield eBay

Pros: Three-way design with an unconventional concentric layout: the 1” tweeter is recessed into the throat of the 5.25” midrange driver, deeper integration than a standard coaxial arrangement. A quasi sealed/ported bass alignment gives an extended low-end shelf tuned to match typical in-room gain, reaching about 50Hz for most content - deeper than recently-tested rivals like the Focal Aria 906, Polk R200, and an 8” Aperion design. Spinorama measurements show class-leading directivity and sound power, plus very linear on-axis response (at the recommended 10° toe-out) and early-reflections directivity, so it takes EQ exceptionally well. The vertical sweet spot extends to about ±20-30° off the reference axis with nearly identical tonality, unusually wide for a two- or three-way design. A clear upgrade over the earlier, non-Meta R3, eliminating the treble brightness the original had even when toed off-axis. Outperforms similarly-priced rivals (Revel M106, Wharfedale Linton, Philharmonic BMR V2, JBL HDI 1600) specifically on directivity and linearity in the reviewer’s measurements. At $2,200/pair, called the best value in its class with near-reference-level anechoic performance.

Cons: Pointed straight on-axis, there’s a 1-2dB bump around 9kHz that stays consistent across angles thanks to the constant-directivity waveguide - only toeing the speaker out about 10° tames it. Minimum impedance dips to about 3.2 ohms nominal (EPDR as low as 1.9 ohms), so it needs a 4-ohm-stable amplifier; a standard AVR likely won’t cut it. Distortion crosses the reviewer’s 3% threshold around 80Hz at 96dB output and shows added deviation again near 50Hz, indicating it runs out of headroom at higher volumes - a subwoofer is recommended for loud listening. Horizontal radiation narrows from about ±70° at low frequency to ±40° at high frequency. Below about 100Hz, compression testing shows fairly wide deviations at both 86dB and 96dB output, though the reviewer notes this is typical for speakers in this size and price class. Current R3 owners who are already happy with that speaker have little reason to upgrade.

Full KEF R3 Meta review and specifications →

Bass Extension (-10dB)	37Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	76Hz (measured, Erin's Audio Corner)
Dimensions	16.6"H x 7.9"W x 13.2"D (421.6 x 200.7 x 335.3 mm)
Drivers	6.5" Hybrid aluminum ported woofer, 5" aluminum cone midrange, 1" vented aluminium dome with MAT tweeter
Impedance	4 ohms nominal (3.2 ohms minimum above 80Hz, measured, Erin's Audio Corner)
Sensitivity	85.9dB (measured, Erin's Audio Corner; 87dB manufacturer specified)
Weight	27.3 lbs / 12.4 kg each
Woofer Cabinet	ported

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Ranked #11 of 131 in Large Size Bookshelf Speakers - KEF Q Concerto Meta: $1,399.99 Amazon Crutchfield eBay

Pros: Really good in-room neutrality with consistent horizontal directivity from seat to seat. Directivity holds remarkably steady from lower treble into upper treble, where many similarly-priced speakers narrow sharply as frequency rises - one of the reviewer’s top 10 picks under $1,500.

Cons: Radiation pattern measures about ±50°, narrower than the reviewer’s preferred ±60° for a stronger sense of envelopment. Needs to be pointed closer to on-axis rather than heavily toed out - combined with its rolled-off, shelved-down top end, too much toe-out makes it sound noticeably dark.

Full KEF Q Concerto Meta review and specifications →

Bass Extension (-10dB)	35Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	53Hz (measured, Erin's Audio Corner)
Dimensions	16.3"H x 8.3"W x 12.4"D (414 x 210.8 x 315 mm)
Drivers	165 mm (6.5 in.) hybrid aluminium cone woofer, 100 mm (4 in.) aluminium cone midrange, 19 mm (0.75 in.) vented aluminium dome with MAT tweeter
Impedance	4 ohms nominal (3.3 ohms minimum above 80Hz, measured by Erin's Audio Corner)
Sensitivity	84.2dB (measured average, Erin's Audio Corner)
Weight	20.9 lbs / 9.5 kg each
Woofer Cabinet	ported, rear

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Ranked #15 of 131 in Large Size Bookshelf Speakers - KEF R3: $2,200/pair Amazon eBay

Pros: True three-way stand-mount with a 6.5-inch woofer below KEF’s 5-inch Uni-Q midrange/1-inch tweeter. Erin measured approximately 86-87dB/2.83V/1m sensitivity, exceptionally low sub-1% distortion at 86dB and orderly directivity in both planes. The coaxial geometry maintains image stability across seats, while Flexible Port Technology avoids the strong midrange port resonance common to rear-vented competitors. A 110W Parasound drove it successfully in Erin’s listening.

Cons: The low-frequency alignment rolls gradually rather than delivering high-output sub-bass; KEF specifies 58Hz +/-3dB and Erin’s high-level data supports using an 80Hz subwoofer crossover. Narrow high-frequency features and natural Uni-Q narrowing toward the top octave make toe angle audible, although off-axis tracking remains smooth. Sensitivity is moderate, the cabinet weighs almost 30 lb, and this original R3 lacks the Meta successor’s MAT absorber.

Full KEF R3 review and specifications →

Bass Extension (-10dB)	35.2Hz (measured, Audio Science Review)
Bass Extension (-3dB)	Approximately 58Hz (manufacturer specified; consistent with Erin's measured roll-off)
Dimensions	16.6"H x 7.9"W x 13.2"D
Drivers	1" tweeter coaxial with 5" midrange; 6.5" woofer
Impedance	8 ohms nominal; suitable for Erin's 4/8-ohm-rated amplifier
Sensitivity	Approximately 86-87dB/2.83V/1m (measured, Erin's Audio Corner)
Woofer Cabinet	ported, rear Flexible Port

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Ranked #90 of 131 in Large Size Bookshelf Speakers - KEF Q3 Meta: $719.00 Amazon Crutchfield eBay

Pros: Coaxial two-way design (1” vented aluminum dome tweeter with Meta absorber embedded in a 6.5” aluminum cone mid/bass driver) delivering unusually wide dispersion both horizontally and vertically (about ±60° each) - wider than typical KEF models, which usually run closer to ±50° horizontal and ±15-20° vertical for non-coaxial designs. A deliberate ~2dB bump around 120Hz gives a satisfying sense of kick-drum impact, a voicing choice the reviewer personally favors even though it’s not strictly accurate. Extended bass-shelf tuning allows placement close to a rear wall (about 1 foot) without sounding boomy. Good directivity overall means it takes well to EQ correction if desired. Cabinet resonances around 350-370Hz and 600Hz look concerning in impedance measurements, but blind ABX testing (24 trials) after adding damping material couldn’t reliably distinguish the treated cabinet from the untreated one - these particular resonances appear to fall below the threshold of audibility. Sturdier build than previous KEF Q-series models.

Cons: Not well suited to high-output use: compression and strain in the 1-2kHz region emerge above about 90dB at 10 feet, so a high-output home theater setup isn’t the best application. A slight loss of attack and clarity around 1-2kHz was noticeable both subjectively and in measurements. F3 of 52Hz with a fairly quick rolloff below 50Hz means a subwoofer is still recommended for real bass extension, even for moderate-volume home theater use. Sealed configuration (using the included port bungs) pushes the bass rolloff up into the 100Hz+ region - the reviewer recommends leaving it in ported mode instead. Sounds best pointed directly at the listener; toeing it out 30° rolls off the top end without a meaningful soundstage benefit. Compression testing shows real breakdown at 102dB/1m, with the woofer losing excursion control - confirms the practical output ceiling. An unexplained -5dB dip appears in on-axis measurements that the reviewer couldn’t attribute to a specific cause.

Full KEF Q3 Meta review and specifications →

Bass Extension (-10dB)	37Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	52Hz (measured, Erin's Audio Corner)
Dimensions	14.1"H x 8.3"W x 12"D (357.0 x 210.0 x 305.0 mm)
Drivers	165 mm (6.5 in.) aluminium cone woofer, 25 mm (1 in.) vented aluminium dome with MAT tweeter
Impedance	4 ohms nominal, 3.7 ohms minimum (measured above 80Hz, Erin's Audio Corner)
Sensitivity	84.5dB (measured average 300Hz-3kHz @ 2.83V/1m, Erin's Audio Corner; 87dB manufacturer specified)
Weight	15.9 lbs / 7.2 kg
Woofer Cabinet	ported, rear

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Large Size Floorstanding Speakers

Ranked #2 of 71 in Large Size Floorstanding Speakers - KEF Blade Two Meta: $28000 only sold in stores eBay

Pros: True point-source coaxial design (four 6.5in mid-bass drivers flanking a coincident mid/tweeter) with matched ~50 degree horizontal and vertical dispersion, unusual for a multi-driver speaker. Fully rounded, edgeless cabinet eliminates baffle diffraction. Frequency response holds within about 2.5dB across the listening window. Extremely low harmonic and multitone distortion even at 96dB, with under 0.5dB of compression at full output, rivaling the Reference 1 Meta and JBL 4367 in dynamic range. Reviewer described the imaging and soundstage depth as revealing recording details other speakers he tested (PS Audio FR10, MoFi SourcePoint 8, Neumann KH80) masked. Available in any custom finish at no extra charge.

Cons: 2dB dip and slight resonance around 200Hz, also visible in KEF white paper and likely cabinet-related. Bass rolls off fairly quickly below its 31Hz F3. Horizontal dispersion (~50 degrees) is narrower than the reviewer preferred 70-80 degrees; benefits from toeing out 10-20 degrees to open soundstage without losing image focus. Needs a separate power amp, not AVR-friendly.

Full KEF Blade Two Meta review and specifications →

Bass Extension (-10dB)	26Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	31Hz (measured, Erin's Audio Corner)
Dimensions	46.6"H x 13.5"W x 14.8"D (1183.6 x 342.9 x 375.9 mm)
Drivers	4 x 165 mm (6.5 in.) aluminium cone, force cancelling woofers, 125 mm (5 in.) aluminium cone midrange, 25 mm (1 in.) aluminium dome with MAT tweeter
Impedance	4 ohms nominal (3.3 ohms minimum, measured, Erin's Audio Corner)
Sensitivity	86.8dB (measured, Erin's Audio Corner)
Weight	79.4 lbs / 36 kg each
Woofer Cabinet	ported, rear

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Ranked #26 of 71 in Large Size Floorstanding Speakers - KEF R11 Meta: $3,499.99 Amazon eBay

Pros: CEA2034 spinorama shows a generally flat on-axis response with good directivity and very deep bass extension (F10 of 30Hz). Predicted in-room response is very smooth aside from the small 1-1.5kHz dip. The coaxial Uni-Q driver gives excellent, symmetric vertical directivity, unusual for a tower speaker. Distortion is incredibly low even down to 30Hz at 86dB SPL/1m, and stays low even at 96dB and 102dB SPL/1m - the reviewer found essentially no audible tonality change across that whole output range.

Cons: A dip around 1-1.2kHz on-axis is attributed to a diffraction effect, and shows up as a smaller dip in the predicted in-room response. Horizontal beamwidth of about ±40 degrees is on the narrower side, though the transition from wide to constant directivity is smooth. Minimum impedance dips to 3.2 ohms around 580Hz, calling for an amplifier comfortable with a demanding load. 4-ohm nominal impedance overall.

Full KEF R11 Meta review and specifications →

Bass Extension (-10dB)	31Hz (measured, Audio Science Review)
Bass Extension (-3dB)	64Hz (measured, Audio Science Review)
Dimensions	51"H x 12.2"W x 15.1"D (1295.4 x 309.9 x 383.5 mm)
Drivers	4 x 165 mm (6.5 in.) hybrid aluminium cone woofers, 125 mm (5 in.) aluminium cone midrange, 25 mm (1 in.) vented aluminium dome with MAT tweeter
Impedance	4 ohms
Sensitivity	89.5dB
Weight	80.5 lbs / 36.5 kg each
Woofer Cabinet	ported, rear

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Links
- Official KEF R11 Meta Website
Reviews, Comparisons and Sound Samples
- Audio Science Review KEF R11 Meta More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #46 of 71 in Large Size Floorstanding Speakers - KEF Q11 Meta: $1,249.99 Amazon eBay

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

Check current price at Amazon ($1,249.99) →Search eBay for KEF Q11 Meta →

In-Wall & In-Ceiling Speakers

Ranked #1 of 5 in In-Wall & In-Ceiling Speakers - KEF Ci3160RLM-THX: $1,899.95 Amazon eBay

Pros: Independently measured by Audio Science Review on a Klippel rig to a genuine 58.6Hz at -3dB and roughly 36Hz at -10dB, with an on-axis slope of just -0.02dB per octave, essentially flat. Directivity is the most consistent of any in-wall or in-ceiling speaker in this category, with the tightest spread in its sound-power directivity index across the measured band. The rotatable, tiltable driver module (the RLM in its name) lets the tweeter and midrange aim toward the listening area even when the cabinet itself has to be installed off to one side. THX Ultra2 certified, with a 4-driver, 3-way layout: dual 6.5” woofers flanking a 6.5” Uni-Q coaxial midrange/tweeter.

Cons: At $2,299.99 each, a stereo pair runs roughly $4,600, among the most expensive options in this category. Listening-window and sound-power smoothness are moderate rather than class-leading, meaning some unevenness remains once you move off the main listening axis despite the flat on-axis trace. The 660 x 209mm cutout and 106mm mounting depth are large enough that they won’t fit inside a standard 2x4 wall stud bay without modification.

Full KEF Ci3160RLM-THX review and specifications →

Bass Extension (-10dB)	36Hz (measured, spinorama.org ASR data)
Bass Extension (-3dB)	58.6Hz (measured, spinorama.org ASR data)
Certification	THX Ultra2
Dimensions	26.8" x 9.1" x 4.2" (680 x 230 x 105.7 mm)
Drivers	2x 6.5" LF woofers, 6.5" Uni-Q coaxial midrange, 1" vented aluminum dome tweeter with MAT (rotatable/tiltable module)
Enclosure	Open-backed, in-wall
Frequency Response	43Hz-28kHz +/-6dB (manufacturer, open-backed)
Impedance	4 ohms
Mounting Cutout	660mm (H) x 209mm (W)
Power Handling	50-350W recommended amplifier power
Sensitivity	89dB
Weight	26.5 lbs / 12kg (26.4 lbs)

Check current price at Amazon ($1,899.95) →Search eBay for KEF Ci3160RLM-THX →

Links
- KEF Ci3160RLM-THX Official Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements (spinorama.org) More from Audio Science Review →
Head-to-Head Comparisons

Ranked #2 of 5 in In-Wall & In-Ceiling Speakers - KEF CI250RRM-THX: $2,999.99 Abt Electronics eBay

Pros: Independently measured by Audio Science Review to a genuine 51.3Hz at -3dB and roughly 23.3Hz at -10dB, the deepest bass extension of any in-wall or in-ceiling speaker in this category. It’s a THX-certified 3-way coaxial design, a 10” woofer built around a 4” Uni-Q midrange and 1” aluminum dome tweeter, deliberately voiced for the 30-60 degree off-axis angle typical of a ceiling-mounted Dolby Atmos height or surround channel rather than a straight-down listening position. Run through a receiver’s automated room correction, spinorama’s EQ-adjusted figures show its preference score climbing from 3.76 to 4.78, so it responds well to correction.

Cons: At $2,999.99 each, this is the most expensive speaker in this category. Its raw on-axis measurement trails the Ci3160RLM-THX (preference score 3.76 vs. 4.62) since the driver array is tuned for off-axis dispersion rather than a flat straight-ahead response, and its on-axis deviation averages 1.14dB, one of the roughest of the batch measured on-axis.

Full KEF CI250RRM-THX review and specifications →

Bass Extension (-10dB)	23.3Hz (measured, spinorama.org ASR data)
Bass Extension (-3dB)	51.3Hz (measured, spinorama.org ASR data)
Certification	THX
Dimensions	13.6" x 13.6" x 6.9" (346 x 346 x 175 mm) (168mm mounting depth)
Drivers	10" LF woofer, 4" Uni-Q midrange, 1" vented aluminum dome tweeter with MAT (3-way coaxial)
Enclosure	Open-backed, in-ceiling
Frequency Response	28Hz-20kHz +/-6dB (manufacturer, open-backed)
Impedance	8 ohms
Mounting Cutout	300mm (11.81 in)
Power Handling	50-250W recommended amplifier power
Sensitivity	89dB
Weight	13.2 lbs / 6kg (13.2 lbs)

Check current price at Abt Electronics ($2,999.99) →Search eBay for KEF CI250RRM-THX →

Links
- KEF CI250RRM-THX Official Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements (spinorama.org) More from Audio Science Review →
Head-to-Head Comparisons

Ranked #3 of 5 in In-Wall & In-Ceiling Speakers - KEF CI200RR-THX: $898.75 Amazon eBay

Pros: An 8” woofer paired with a 1.5” Uni-Q tweeter (crossing over at 2.2kHz) measures a genuine 82.5Hz at -3dB and roughly 30.5Hz at -10dB, respectable low-end reach for a mid-priced in-ceiling speaker. The 238mm cutout accepts a large enough driver to move real air in a family room or media room. At $1,199.99 each, it costs about half of KEF’s flagship Ci3160RLM-THX while carrying the same THX certification.

Cons: Spinorama’s measurement of this model is a lower-confidence manufacturer curve rather than an independently verified Klippel scan, so treat the extension figures as directionally useful rather than as precise as the ASR-measured entries in this category. No Harman-style preference score has been published for it.

Full KEF CI200RR-THX review and specifications →

Bass Extension (-10dB)	30.5Hz (measured, spinorama.org vendor data)
Bass Extension (-3dB)	82.5Hz (measured, spinorama.org vendor data)
Certification	THX
Dimensions	11.4" x 11.4" x 5.2" (290 x 290 x 132.6 mm) (126.5mm mounting depth)
Drivers	8" woofer, 1.5" Uni-Q tweeter (2.2kHz crossover)
Enclosure	Open-backed, in-ceiling
Frequency Response	33Hz-28kHz +/-6dB (manufacturer, open-backed)
Impedance	4 ohms
Mounting Cutout	238mm (9.37 in)
Power Handling	10-190W recommended amplifier power
Sensitivity	90dB
Weight	7.9 lbs / 3.6kg

Check current price at Amazon ($898.75) →Search eBay for KEF CI200RR-THX →

Links
- KEF CI200RR-THX Official Page
Reviews, Comparisons and Sound Samples
- Manufacturer Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #4 of 5 in In-Wall & In-Ceiling Speakers - KEF CI130.2CR: $299.99 World Wide Stereo eBay

Pros: A compact 158 x 158mm cutout and 82.3mm depth fit tight joist bays and shallow ceiling cavities where the larger Ci-THX models in this category won’t. At $299.99 each it’s the most affordable speaker in this category by a wide margin. The 5.25” Uni-Q driver keeps its 16mm aluminum dome tweeter coaxially centered on the woofer, so the two acoustic centers stay aligned regardless of listening position.

Cons: KEF’s own frequency response spec bottoms out at 52Hz, and the measured curve reaches only about 100Hz at -3dB and roughly 53.5Hz at -10dB, the shallowest low end among the models in this category with a THX certification, so pairing it with a subwoofer is worth planning for. It’s open-backed with only medium-quality vendor measurement data behind it, not an independently verified Klippel scan.

Full KEF CI130.2CR review and specifications →

Bass Extension (-10dB)	53.5Hz (measured, spinorama.org vendor data)
Bass Extension (-3dB)	100Hz (measured, spinorama.org vendor data)
Dimensions	7.6" x 7.6" x 3.2" (193.4 x 193.4 x 82.3 mm) (77.7mm mounting depth)
Drivers	5.25" Uni-Q coaxial woofer with 16mm aluminum dome tweeter
Enclosure	Open-backed, in-ceiling
Frequency Response	52Hz-20kHz +/-6dB (manufacturer, open-backed)
Impedance	8 ohms
Mounting Cutout	158 x 158mm
Power Handling	10-80W recommended amplifier power
Sensitivity	87dB
Weight	2.9 lbs / 1.3kg

Check current price at World Wide Stereo ($299.99) →Search eBay for KEF CI130.2CR →

Links
- KEF CI130.2CR Official Page
Reviews, Comparisons and Sound Samples
- Manufacturer Measurements (spinorama.org)
Head-to-Head Comparisons

Medium Powered Home Subwoofers (30-75 lbs)

Ranked #137 of 137 in Medium Powered Home Subwoofers (30-75 lbs) - Kef KC62: $1,699.99 Amazon eBay

Pros: Dual 6.5-inch force-canceling drivers with 1000W in ultra-compact basketball-sized sealed enclosure. Deep extension to 11Hz with five room placement EQ presets. Elegant design fits any décor.

Full Kef KC62 review and specifications →

CEA-2010-A Average (40-80Hz)	96.9 dB
Cabinet Color	black, white
Country	United Kingdom
Dimensions	9.7"H x 10.1"W x 9.8"D (245.9 x 255.8 x 247.9 mm)
Drivers	2x 6.5" (165mm) driver
Enclosure	sealed
Frequency Response	11-200Hz
Measurement Source	ErinsAudioCorner
Output SPL at 20 Hz	80.0 dB
Output SPL at 25 Hz	84.6 dB
Output SPL at 31.5 Hz	88.5 dB
Output SPL at 40 Hz	92.2 dB
Output SPL at 50 Hz	95.1 dB
Output SPL at 63 Hz	97.7 dB
Output SPL at 80 Hz	102.6 dB
Output SPL at 100 Hz	104.2 dB
Power Output (Watts)	1000W RMS
Warranty	5/2/5
Weight	30.9 lbs / 14.0 kg

Check current price at Amazon ($1,699.99) →Search eBay for Kef KC62 →

Discontinued KEF Models

Still ranked, and often still worth buying used, but no longer in production. Check availability before planning around one of these.

Medium Size Bookshelf Speakers

Ranked #26 of 87 in Medium Size Bookshelf Speakers - KEF Q150: $350 Discontinued Amazon eBay

Pros: Two-way coaxial (Uni-Q) design with a 1” dome tweeter and 5.25” mid-range time-aligned in a single driver assembly, available in ported or sealed configuration. Exceptional soundstage depth, a hallmark of KEF’s coaxial designs that the reviewer says few other speakers match. Bass extension reaches into kick-drum territory, respectable for a compact bookshelf speaker. Resonances present in measurements are consistent across on- and off-axis readings, meaning they can be effectively corrected with EQ. Distortion profile is essentially the same whether run sealed or ported, since a subwoofer crossover point sits above where the differences would matter anyway. At its sale price (around $300, sometimes seen at $400), the reviewer considers it a clear step up from his previous budget favorite in this range, the Emotiva B1+, mainly due to the superior soundstage depth.

Cons: A high-frequency lift in the estimated in-room response makes it sound noticeably brighter in an untreated room than in a heavily acoustically-treated one - a real preference factor depending on your room’s furnishings. A mild dip in the 1-2kHz region reduces vocal fullness somewhat. Unexplained resonances appear in measurements and persist in both sealed and ported configurations, pointing to enclosure or panel vibration rather than the port. Horizontal radiation is narrower than the reviewer generally prefers from KEF’s lineup, with directivity that widens somewhat around 1.2kHz (near a resonance) and again above about 5kHz. Compression testing at high output (102dB) shows significant nonlinearity, especially at lower frequencies - noticeably worse than a comparable Arendal bookshelf speaker costing over twice as much, which held up better until 80Hz. Not intended for loud listening without a subwoofer - the woofer will over-exert itself without a high-pass filter, and the reviewer recommends crossing over at 80-120Hz. At full retail price (around $600/pair), the value proposition is far less certain than at sale pricing. Discontinued.

Full KEF Q150 review and specifications →

Bass Extension (-10dB)	44Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	51Hz (measured, Erin's Audio Corner)
Dimensions	11.9"H x 7.1"W x 10.9"D (303 x 180 x 278 mm)
Discontinued	Yes
Drivers	130mm (5.25") aluminium Uni-Q woofer, 25mm (1") vented aluminium dome tweeter
Impedance	8 ohms nominal, about 4.7 ohms minimum (measured, Erin's Audio Corner)
Sensitivity	~85dB (300Hz-3kHz on-axis, measured, Erin's Audio Corner)
Weight	12.3 lbs / 5.6 kg each
Woofer Cabinet	ported, rear

Check current price at Amazon ($350) →Search eBay for KEF Q150 →

Ranked #68 of 87 in Medium Size Bookshelf Speakers - KEF Q100: $550 Discontinued eBay

Pros: 5.25” Uni-Q coaxial driver keeps the tweeter and woofer point-source aligned for consistent imaging. 86dB sensitivity is reasonably easy to drive.

Cons: CEA2034 spinorama shows broad, audible deviations from flat rather than narrow peaks: a lift from 700Hz-1.5kHz and again from 5kHz up, plus a cancellation notch around 1.4kHz from port/cabinet interaction. Bass sensitivity drops to about 80dB and impedance falls below 4 ohms in the bass, demanding a capable amplifier. The reviewer heard boomy, buzzing bass that improved somewhat with the port plugged, and could not recommend it, calling the famous reputation more about looks than sound. Discontinued.

Full KEF Q100 review and specifications →

Bass Extension (-10dB)	65Hz (measured, Audio Science Review)
Bass Extension (-3dB)	85Hz (measured, Audio Science Review)
Dimensions	11.8"H x 7.1"W x 10.7"D (300 x 180 x 272 mm)
Discontinued	Yes
Drivers	5.25" Uni-Q aluminum coaxial driver, 1" aluminum dome tweeter
Frequency Response	49Hz - 40kHz (+/-3dB) (Manufacturer specified)
Impedance	8 ohms nominal
Sensitivity	85dB (2.83V/1m, measured, Audio Science Review)
Weight	13 lbs / 5.9 kg each
Woofer Cabinet	ported, rear

Search eBay for KEF Q100 →

Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Large Size Bookshelf Speakers

Ranked #106 of 131 in Large Size Bookshelf Speakers - KEF Q350: $699.00 Discontinued Amazon eBay

Pros: CEA2034 spinorama shows a reasonably flat on-axis response with excellent directivity, aided by the coaxial Uni-Q driver. Vertical directivity is better than most non-coaxial two-way speakers, another benefit of the concentric design.

Cons: Two resonances at 700Hz and 1.2kHz show up on-axis, alongside an upper-bass boost. Predicted in-room response looks a bit boomy as a result. Distortion climbs substantially in the 100Hz-1kHz range at 96dB SPL/1m, with a distinct resonance-driven peak around 900Hz-1kHz at both test levels. Discontinued.

Full KEF Q350 review and specifications →

Bass Extension (-10dB)	38Hz (measured, Audio Science Review)
Bass Extension (-3dB)	70Hz (measured, Audio Science Review)
Dimensions	14.1"H x 8.3"W x 12"D (358.0 x 210.0 x 306.0 mm)
Discontinued	Yes
Drivers	25mm tweeter + 165mm woofer
Impedance	4 ohms
Sensitivity	86dB (measured, Audio Science Review)
Weight	29.5 lbs / 13.4 kg
Woofer Cabinet	ported, rear

Check current price at Amazon ($699.00) →Search eBay for KEF Q350 →

Links
- Official KEF Q350 Website
Reviews, Comparisons and Sound Samples
- Audio Science Review KEF Q350 More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Large Size Floorstanding Speakers

Ranked #9 of 71 in Large Size Floorstanding Speakers - KEF R5 Meta: $3,999.99 Discontinued eBay

Pros: 12th generation 5” Uni-Q coaxial driver array with Metamaterial Absorption Technology (MAT) delivers remarkably smooth, controlled horizontal (±50°) and vertical directivity with near-identical off-axis tracking. Exceptional frequency response linearity through the midrange and treble that takes extremely well to minor parametric EQ adjustments. Constrained Layer Damping cabinet construction and flexible rear ports minimize enclosure resonances and port turbulence. Deliberately tuned low-frequency roll-off profile permits boundary-adjacent room placement near front walls without boomy acoustic buildup.

Cons: Low-frequency extension (F3 of 52Hz, F10 of 38Hz) requires pairing with a dedicated subwoofer crossed over at 80Hz for high-output home theater or bass-heavy music performance. High-frequency radiation above 7kHz shows a mild on-axis taper (1-2dB downward slope), performing best when listened to 10-20° off-axis. Moderate sensitivity (~86dB SPL average) requires a clean, robust 4-ohm capable amplifier to drive high dynamic peaks without clipping. Discontinued.

Full KEF R5 Meta review and specifications →

Bass Extension (-10dB)	38Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	52Hz (measured, Erin's Audio Corner)
Dimensions	42.2"H x 10.7"W x 13.6"D (1073 x 273 x 346 mm)
Discontinued	Yes
Drivers	1 in. vented aluminum dome tweeter with MAT, 5 in. aluminum cone midrange, two 5.25 in. hybrid aluminum cone woofers
Impedance	4 ohms nominal
Sensitivity	86dB (measured average, Erin's Audio Corner)
Weight	54 lbs / 24.5 kg each
Woofer Cabinet	ported, rear

Search eBay for KEF R5 Meta →

Ranked #10 of 71 in Large Size Floorstanding Speakers - KEF R5: $2,999/pair Discontinued eBay

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.

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)
Dimensions	40.4"H x 6.9"W x 13.5"D
Discontinued	Yes
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)
Weight	59.5 lb each
Woofer Cabinet	ported, rear

Search eBay for KEF R5 →

Links
- Official KEF R Series Information
Reviews, Comparisons and Sound Samples
Head-to-Head Comparisons

Ranked #13 of 71 in Large Size Floorstanding Speakers - KEF Reference 203: $5000 Discontinued eBay

Pros: An unusually accomplished 4-way design for its era: excellent on-axis linearity (within about +/-3dB), genuinely good directivity both horizontally (~55 degrees) and vertically (~40-50 degrees), and an estimated in-room response that closely matches what the reviewer actually heard. Distortion is excellent - under 1% harmonic above 80Hz at both 86dB and 96dB, and multitone stays around 1% even at 96dB. Bass reaches a real F3 of 51Hz (F10 37Hz), with in-room extension into the low-mid-40s. The reviewer’s overall listening notes were essentially “nothing stood out bad or good” - a genuinely neutral, accurate speaker with a distinctive rounded-baffle look that avoids the diffraction issues a flat baffle this wide would normally have.

Cons: This is a 20+ year old, long-discontinued speaker only findable secondhand (Facebook Marketplace, Craigslist, audio forums) - condition, driver matching, and component aging vary by unit, so audition before buying if at all possible. Demands a robust amplifier: impedance dips to about 3.6 ohms with an EPDR of 2.2 ohms. The small supertweeter shows minor breakup artifacts at the extremes of the vertical polar plot and some compression at very high output in the top octave, though neither was audible in normal listening. Discontinued.

Full KEF Reference 203 review and specifications →

Bass Extension (-10dB)	37Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	51Hz (measured, Erin's Audio Corner)
Crossover Frequency	400Hz, 2.7kHz, 15kHz
Dimensions	1067H mm (42" tall)
Discontinued	Yes
Drivers	1x 0.75" supertweeter, coaxial 1" dome tweeter + 6.5" midrange, 2x 6.5" woofers
Frequency Response	55Hz - 55kHz ±3dB (Manufacturer specified)
Impedance	8 ohms nominal (3.6 ohms minimum, measured, Erin's Audio Corner; 3.2 ohms per manufacturer spec)
Recommended Power	50-200W
Sensitivity	88dB (2.83V/1m, measured by Erin's Audio Corner)
Weight	58 lbs / 26.3 kg (58 lb)
Woofer Cabinet	Bass reflex, with switchable flat/cut/lifted bass ports for wall placement

Search eBay for KEF Reference 203 →

Links
- Erin’s Audio Corner Website KEF Reference 203
Reviews, Comparisons and Sound Samples
Head-to-Head Comparisons

In-Wall & In-Ceiling Speakers

Ranked #5 of 5 in In-Wall & In-Ceiling Speakers - KEF CI50R: Discontinued eBay

Pros: At just 80 x 80mm and 55mm deep, this is by far the smallest speaker in this category, small enough to fit into spaces, tight closets, cabinetry, shallow ceiling cavities, that none of the other in-wall or in-ceiling models here can reach.

Cons: No longer sold as a current KEF product; dealer listings mark it a legacy item replaced in KEF’s lineup, so buying one now means used or leftover new-old stock rather than a current retail purchase. It measures the shallowest bass extension of any speaker in this category by a wide margin, reaching only about 170Hz at -3dB and roughly 113Hz at -10dB, consistent with a small background or ambient-audio speaker rather than one built for full-range listening. Discontinued.

Full KEF CI50R review and specifications →

Bass Extension (-10dB)	113Hz (measured, spinorama.org vendor data)
Bass Extension (-3dB)	170Hz (measured, spinorama.org vendor data)
Dimensions	3.1" x 3.1" x 2.2" (80 x 80 x 55 mm)
Discontinued	Yes
Drivers	2" full-range driver
Enclosure	Open-backed (optional rear enclosure), in-ceiling
Frequency Response	125Hz-20kHz +/-6dB (manufacturer, open-backed)
Impedance	6 ohms
Mounting Cutout	70mm (2.76 in) with rear enclosure
Power Handling	10-30W recommended amplifier power
Sensitivity	82dB
Weight	2.2 lbs / 1.0kg

Search eBay for KEF CI50R →

Reviews, Comparisons and Sound Samples
- Manufacturer Measurements (spinorama.org)
Head-to-Head Comparisons

Small Powered Home Subwoofers (Under 30 lbs)

Ranked #19 of 42 in Small Powered Home Subwoofers (Under 30 lbs) - Kef T2: $719.99 Discontinued Amazon eBay

Pros: Independent CEA-2010 testing records 84.6 dB at 20 Hz and 105.7 dB through 40-80 Hz. The sealed enclosure with 10” (254mm) driver is best suited to upper-bass support in a modest room.

Cons: Deep-bass output is limited relative to its midbass result, so it is not the right choice for the lowest movie effects. The 381.0H x 370.8W x 177.8D mm cabinet and 2.7 kg mass still need deliberate placement and calibration. Discontinued.

Notes: low profile (<8in)

Full Kef T2 review and specifications →

CEA-2010-A Average (40-80Hz)	105.7 dB
Cabinet Color	black, white
Country	United Kingdom
Dimensions	15"H x 14.6"W x 7"D (381.0 x 370.8 x 177.8 mm)
Discontinued	Yes
Drivers	10" (254mm) driver
Enclosure	sealed
Measurement Source	Brent Butterworth
Output SPL at 15 Hz	78.3 dB
Output SPL at 20 Hz	84.6 dB
Output SPL at 25 Hz	89.8 dB
Output SPL at 31.5 Hz	96.2 dB
Output SPL at 40 Hz	100.1 dB
Output SPL at 50 Hz	104.4 dB
Output SPL at 63 Hz	108.1 dB
Output SPL at 80 Hz	110.3 dB
Warranty	5/2/5
Weight	6 lbs / 2.7 kg

Check current price at Amazon ($719.99) →Search eBay for Kef T2 →

Links
- Kef T2 Website
Reviews, Comparisons and Sound Samples
Head-to-Head Comparisons
- Kef T2 vs Revel B8

Medium Powered Home Subwoofers (30-75 lbs)

Ranked #82 of 137 in Medium Powered Home Subwoofers (30-75 lbs) - Kef R400: $699 Discontinued eBay

Pros: Dual 9-inch force-canceling sealed drivers with 500W deliver clean tight powerful bass. Superior build quality with elegant compact design. Excellent integration with KEF R-series speakers.

Cons: Discontinued.

Full Kef R400 review and specifications →

CEA-2010-A Average (40-80Hz)	110.8 dB (avg of 3/4 bands)
Country	United Kingdom
Dimensions	14.4"H x 13"W x 13.8"D (365.8 x 330.2 x 350.5 mm)
Discontinued	Yes
Drivers	2x 9" (229mm) driver
Enclosure	sealed
Frequency Response	26-140Hz
Measurement Source	Brent Butterworth
Output SPL at 20 Hz	85.8 dB
Output SPL at 25 Hz	87.3 dB
Output SPL at 31.5 Hz	92.7 dB
Output SPL at 40 Hz	107.4 dB
Output SPL at 50 Hz	111.5 dB
Output SPL at 63 Hz	113.6 dB
Power Output (Watts)	500W RMS
Warranty	5/2/5
Weight	47.4 lbs / 21.5 kg

Search eBay for Kef R400 →

Links
- Kef R400 Website
Reviews, Comparisons and Sound Samples

Ranked #110 of 137 in Medium Powered Home Subwoofers (30-75 lbs) - Kef Kube 10B: $800 Discontinued eBay

Pros: Sealed 10-inch with 300W RMS and KEF iBX intelligent bass extension algorithm. Three preset EQ options plus smart compression limiting for dynamic playback. Confidence recommended for small to medium rooms.

Cons: Discontinued.

Full Kef Kube 10B review and specifications →

CEA-2010-A Average (40-80Hz)	108.0 dB
Cabinet Color	black
Country	United Kingdom
Dimensions	14.6"H x 13.9"W x 14.6"D (370.8 x 353.1 x 370.8 mm)
Discontinued	Yes
Drivers	10" (254mm) driver
Enclosure	sealed
Frequency Response	24-140Hz
Measurement Source	Brent Butterworth
Output SPL at 15 Hz	86.3 dB
Output SPL at 20 Hz	93.4 dB
Output SPL at 25 Hz	93.5 dB
Output SPL at 31.5 Hz	100.7 dB
Output SPL at 40 Hz	103.9 dB
Output SPL at 50 Hz	107.1 dB
Output SPL at 63 Hz	109.9 dB
Output SPL at 80 Hz	111.1 dB
Power Output (Watts)	300W RMS
Warranty	5/2/5
Weight	38.4 lbs / 17.4 kg

Search eBay for Kef Kube 10B →

Links
- Kef Kube 10B Website
Reviews, Comparisons and Sound Samples

Ranked #130 of 137 in Medium Powered Home Subwoofers (30-75 lbs) - Kef KF92: $2,000 Discontinued eBay

Pros: Dual opposing 9-inch force-canceling sealed drivers with 1000W deliver tight clean deep bass to 11Hz. Music Integrity Engine (iBX) provides intelligent dynamic enhancement. Flexible setup options for various room placements.

Cons: Discontinued.

Full Kef KF92 review and specifications →

CEA-2010-A Average (40-80Hz)	103.7 dB
Cabinet Color	black
Country	United Kingdom
Dimensions	13.9"H x 13"W x 14.2"D (352.3 x 329.9 x 360.4 mm)
Discontinued	Yes
Drivers	2x 9.2" (234mm) driver
Enclosure	sealed
Frequency Response	11-160Hz
Measurement Source	ErinsAudioCorner
Output SPL at 20 Hz	86.0 dB
Output SPL at 25 Hz	91.6 dB
Output SPL at 31.5 Hz	95.4 dB
Output SPL at 40 Hz	101.1 dB
Output SPL at 50 Hz	103.0 dB
Output SPL at 63 Hz	104.4 dB
Output SPL at 80 Hz	106.3 dB
Output SPL at 100 Hz	107.2 dB
Power Output (Watts)	1000W RMS
Warranty	5/2/5
Weight	44.1 lbs / 20.0 kg

Search eBay for Kef KF92 →

Links
- Kef KF92 Website
Reviews, Comparisons and Sound Samples