Short answer: the KEF Reference 1 Meta. It ranks #3 of 222 bookshelf speakers by sound quality (rated 4.8/5); the AsciLab F6Bs ranks #20 (rated 4.5/5).
Why pick the AsciLab F6Bs: A slim, sealed bookshelf speaker that mounts flat on a wall bracket, with accurate sound and wide, even dispersion for a great price. The tradeoff: AsciLab’s own site shows the F6Bs sold out, though it remains in stock through resellers like Audiophonics and Tested Audio.
The KEF Reference 1 Meta is the more accurate, deeper-bass pick. Extremely accurate bookshelf speakers, with a superb three dimensional soundstage, no harshness, and tightly matched pairs. Its measured preference score, a predictor of how neutral it sounds, is 6.48 against 5.24 for the AsciLab F6Bs. Its bass reaches about 52Hz before falling 3dB, against 82Hz for the AsciLab F6Bs. Watch for: At roughly $10000/pair, nearly four times the cost of the similarly-sized KEF R3.
Buy the KEF Reference 1 Meta. It is rated higher for sound quality than the AsciLab F6Bs.
Still deciding? The full Passive Home rankings cover every ranked option.
A slim, sealed bookshelf speaker that mounts flat on a wall bracket, with accurate sound and wide, even dispersion for a great price.
Extremely accurate bookshelf speakers, with a superb three dimensional soundstage, no harshness, and tightly matched pairs.
Prices on this page were last checked October 31, 2026 at 7:11 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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Specifications Side By Side
| AsciLab F6Bs | KEF Reference 1 Meta | |
|---|---|---|
| Price | €799 per pair | $9999.98 per pair |
| Ranked | #20 of 222 in Large Size Bookshelf Speakers | #3 of 222 in Large Size Bookshelf Speakers |
| Enclosure | sealed | - |
| Drivers | 1” aluminum dome tweeter with waveguide and phase plug, 6” fiber cone woofer | 165 mm (6.5 in.) aluminium cone woofer, 125 mm (5 in.) aluminium cone midrange, 25 mm (1 in.) aluminium dome with MAT tweeter |
| Dimensions | 14.5”H x 8”W x 6.1”D (368 x 203 x 154 mm) | 17.3”H x 8.1”W x 16.6”D (439.4 x 205.7 x 421.6 mm) |
| Weight | 12.3 lbs (5.6 kg) each | 40.1 lbs (18.2 kg) each |
| Sensitivity | 85.2dB @ 2.83V/1m (measured, Audio Science Review) | 82.5dB (measured average, Erin’s Audio Corner) |
| Impedance | 4 ohms nominal, 3.7 ohms minimum | 4 ohms nominal, 2.9 ohms minimum (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 82.0Hz (measured, Audio Science Review) | 52Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 50.1Hz (measured, Audio Science Review) | 32Hz (measured, Erin’s Audio Corner) |
| Crossover Frequency | 1kHz | - |
| Mounting | VESA 100 wall mount compatible | - |
| Warranty | 2 years | - |
| Country | South Korea | - |
| Maximum SPL | 100dB full bandwidth, 102dB above 100Hz (manufacturer specified) | - |
| Spinorama Preference Score | 5.24 | 6.48 |
| Spinorama Preference Score with Perfect Sub | 7.90 | 8.29 |
| DIY Kit | No | No |
| Woofer Cabinet | - | ported, rear |
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