Short answer: the KEF Q Concerto Meta. It ranks #11 of 203 bookshelf speakers by sound quality (rated 4.6/5) at $1,399.99 and is still sold new; the Emotiva Airmotiv B2+ ranks #169 (rated 3.0/5) and is discontinued, so it is only an option used. The Emotiva Airmotiv B2+’s replacement, the Emotiva Airmotiv XB2, is rated 4.2/5.
The KEF Q Concerto Meta is the better-sounding, deeper-bass option. Really good in-room neutrality with consistent horizontal directivity from seat to seat. Its bass reaches about 53Hz before falling 3dB, against 66Hz for the Emotiva Airmotiv B2+. Watch for: Radiation pattern measures about ±50°, narrower than the reviewer’s preferred ±60° for a stronger sense of envelopment.
Why pick the Emotiva Airmotiv B2+: Erin measured a useful 86dB average sensitivity and strong midbass punch around 120Hz. The catch: The replacement B2+ did not deliver the neutral upgrade Erin expected.
Buy the KEF Q Concerto Meta. It is rated higher for sound quality and still sold new, while the Emotiva Airmotiv B2+ is discontinued.
Want more options? Browse the full Passive Home rankings.
Specifications Side By Side
| KEF Q Concerto Meta | Emotiva Airmotiv B2+ | |
|---|---|---|
| Price | $1,399.99 per pair | $449 per pair Discontinued |
| Ranked | #11 of 203 in Large Size Bookshelf Speakers | #169 of 203 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 35Hz (measured, Erin’s Audio Corner) | 43Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 53Hz (measured, Erin’s Audio Corner) | 66Hz (measured, Erin’s Audio Corner) |
| Dimensions | 16.3”H x 8.3”W x 12.4”D (414 x 210.8 x 315 mm) | 12.8”H x 8.5”W x 11.5”D (324 x 216 x 293 mm) |
| Impedance | 4 ohms nominal (3.3 ohms minimum above 80Hz, measured by Erin’s Audio Corner) | 4 ohms nominal (manufacturer specified) |
| 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 | 6.5” woven-fiber woofer, 32 x 25mm folded-ribbon tweeter |
| Sensitivity | 84.2dB (measured average, Erin’s Audio Corner) | 86dB (measured average, Erin’s Audio Corner) |
| Weight | 20.9 lbs (9.5 kg) each | 15.7 lbs (7.1 kg) each |
| Woofer Cabinet | ported, rear | ported, rear |
| Spinorama Preference Score | 6.01 | 5.60 |
| Spinorama Preference Score with Perfect Sub | 7.71 | 7.96 |
| DIY Kit | No | No |
Related Speaker Comparisons
How KEF Q Concerto Meta compares with other leading options:
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- KEF Q Concerto Meta vs Perlisten S4b
- KEF Reference 1 Meta vs KEF Q Concerto Meta
- KEF Q Concerto Meta vs GR-Research NX-Studio
- KEF Q Concerto Meta vs March Audio Sointuva AWG
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 Q Concerto Meta: $1,399.99 per pair Amazon Crutchfield eBay
Same family: the KEF Q1 Meta (smaller bookshelf, rated 3.6/5), the KEF Q4 Meta (smaller bookshelf, estimated 3.4/5), the KEF Q3 Meta (smaller bookshelf, ranked lower, rated 3.4/5), the KEF Q7 Meta (smaller floorstanding, estimated 3.5/5), the KEF Q11 Meta (larger floorstanding, rated 4/5) and the KEF Q6 Meta (center, rated 3.9/5).
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. Measured bass extension of 53Hz (-3dB), with a measured sensitivity of 84.2dB.
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) |
| DIY Kit | No |
| 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) |
| Spinorama Preference Score | 6.01 |
| Spinorama Preference Score with Perfect Sub | 7.71 |
| Weight | 20.9 lbs (9.5 kg) each |
| Woofer Cabinet | ported, rear |
- Links
- Reviews, Comparisons and Sound Samples
- Erin’s Audio Corner: HiFi Perfection? KEF CONCERTO META Delivers! More from Erin’s Audio Corner →
- Erin’s Audio Corner Website KEF Q Concerto Meta
- Erin’s Audio Corner: I Tested 250 Speakers So You Don’t Have To!
- Erin’s Audio Corner: HiFi Perfection? KEF CONCERTO META Delivers!
- Erin’s Audio Corner: My Absolute Favorite Products of 2024 Revealed
- Erin’s Audio Corner Measurements (spinorama.org)
- Head-to-Head Comparisons
- KEF Q Concerto Meta vs KEF R3 Meta
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- KEF Q Concerto Meta vs Wharfedale Aura 2
- KEF Q Concerto Meta vs Revel M106
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Emotiva Airmotiv B2+: $449 per pair Discontinued eBay
Newer model: the Emotiva Airmotiv XB2, ranked higher, rated 4.2/5.
Same family: the Emotiva Airmotiv T2+ (floorstanding, rated 4.2/5) and the Emotiva Airmotiv C2+ (center, rated 2.9/5).
Pros: Erin measured a useful 86dB average sensitivity and strong midbass punch around 120Hz. The folded-ribbon tweeter provides very broad upper-treble radiation, and the speaker can create a spacious presentation when positioned carefully. Response and directivity remain reasonably orderly below the roughly 2kHz crossover region. The 6.5-inch woofer offers more output capability than compact 5-inch competitors, while F3/F10 of 66/43Hz leave adequate overlap for a conventional 80Hz subwoofer crossover. Horizontal directivity data makes the broad baffle-step trend amenable to partial EQ below the crossover. Measured bass extension of 66Hz (-3dB), with a measured sensitivity of 86dB.
Cons: The replacement B2+ did not deliver the neutral upgrade Erin expected. A baffle-step loss around 500Hz depresses the lower midrange while the AMT’s much wider radiation above crossover injects excess room energy, yielding a bright, forward balance and false impression of cymbal detail. The directivity discontinuity near 2kHz cannot be completely equalized. Erin measured F3 at 66Hz and F10 at 43Hz, so meaningful kick-drum fundamentals and low bass still need a subwoofer. Vertical listening tolerance is roughly +/-10 degrees, with best results between the top of the woofer and tweeter axes. Broad lateral treble energy may require careful toe-out and sidewall absorption. Despite a large cabinet, it offers limited deep-bass advantage and was not Erin’s hoped-for successor to the more linear Emotiva B1+. Discontinued.
Full Emotiva Airmotiv B2+ review and specifications →
| Bass Extension (-10dB) | 43Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 66Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 12.8”H x 8.5”W x 11.5”D (324 x 216 x 293 mm) |
| Drivers | 6.5” woven-fiber woofer, 32 x 25mm folded-ribbon tweeter |
| Impedance | 4 ohms nominal (manufacturer specified) |
| Sensitivity | 86dB (measured average, Erin’s Audio Corner) |
| Spinorama Preference Score | 5.60 |
| Spinorama Preference Score with Perfect Sub | 7.96 |
| Weight | 15.7 lbs (7.1 kg) each |
| Woofer Cabinet | ported, rear |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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