Short answer: the KEF Q Concerto Meta. It ranks #11 of 131 bookshelf speakers by sound quality, rated 4.6/5, at $1,399.99. The HSU Research MFL-6 ranks #96, rated 3.3/5, at $558, $841.99 cheaper, a saving that is not big enough to make up the sound-quality gap.
What the KEF Q Concerto Meta does well: Really good in-room neutrality with consistent horizontal directivity from seat to seat. The tradeoff: Radiation pattern measures about ±50°, narrower than the reviewer’s preferred ±60° for a stronger sense of envelopment.
The case for the HSU Research MFL-6: A high-output 6.5-inch design with horn-loaded tweeter, strong measured sensitivity and flexible wall, stand or horizontal placement. The catch: Its response deviation is substantial and the horn narrows dispersion, so tonal balance and seating coverage are less even than the best conventional monitors.
Buy the KEF Q Concerto Meta. It is rated higher for sound quality, and the $841.99 saving on the HSU Research MFL-6 is not enough to make up the difference.
Still deciding? The full Passive Home rankings cover every ranked option.
Specifications Side By Side
| KEF Q Concerto Meta | HSU Research MFL-6 | |
|---|---|---|
| Price | $1,399.99 per pair | $558 per pair |
| Ranked | #11 of 131 in Large Size Bookshelf Speakers | #96 of 131 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 35Hz (measured, Erin’s Audio Corner) | - |
| Bass Extension (-3dB) | 53Hz (measured, Erin’s Audio Corner) | 77.6Hz (measured, spinorama.org) |
| Dimensions | 16.3”H x 8.3”W x 12.4”D (414 x 210.8 x 315 mm) | 16H x 8W x 6.25-10.375D in |
| Impedance | 4 ohms nominal (3.3 ohms minimum above 80Hz, measured by Erin’s Audio Corner) | 8 ohms |
| 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 | 1” horn-loaded tweeter, 6.5” paper-cone woofer |
| Sensitivity | 84.2dB (measured average, Erin’s Audio Corner) | 85.6dB (measured average 300Hz-3kHz @ 2.83V/1m, spinorama.org) |
| Weight | 20.9 lbs (9.5 kg) each | 13 lbs (5.9 kg) each |
| Woofer Cabinet | ported, rear | - |
| Spinorama Preference Score | 6.01 | 2.63 |
| Spinorama Preference Score with Perfect Sub | 7.71 | 4.77 |
| DIY Kit | No | No |
| Enclosure | - | 2-way bass reflex |
| Frequency Response | - | 60Hz-20kHz +/-2dB |
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Prices on this page were last checked September 30, 2026 at 2:57 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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The Two Speakers In Full
KEF Q Concerto Meta: $1,399.99 per pair 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. 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)
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HSU Research MFL-6: $558 per pair HSU Research eBay
Pros: A high-output 6.5-inch design with horn-loaded tweeter, strong measured sensitivity and flexible wall, stand or horizontal placement. The local Spinorama snapshot delivers a solid 2.63 raw score and 4.77 with a subwoofer, with controlled horizontal radiation and 45Hz extension. Measured bass extension of 77.6Hz (-3dB), with a measured sensitivity of 85.6dB.
Cons: Its response deviation is substantial and the horn narrows dispersion, so tonal balance and seating coverage are less even than the best conventional monitors. The trapezoidal cabinet and utilitarian finish are optimized for function rather than furniture-grade appearance.
Full HSU Research MFL-6 review and specifications →
| Bass Extension (-3dB) | 77.6Hz (measured, spinorama.org) |
|---|---|
| DIY Kit | No |
| Dimensions | 16H x 8W x 6.25-10.375D in |
| Drivers | 1” horn-loaded tweeter, 6.5” paper-cone woofer |
| Enclosure | 2-way bass reflex |
| Frequency Response | 60Hz-20kHz +/-2dB |
| Impedance | 8 ohms |
| Sensitivity | 85.6dB (measured average 300Hz-3kHz @ 2.83V/1m, spinorama.org) |
| Spinorama Preference Score | 2.63 |
| Spinorama Preference Score with Perfect Sub | 4.77 |
| Weight | 13 lbs (5.9 kg) each |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- HSU Research MFL-6 vs Polk R200
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