Short answer: the Revel M105 for better sound quality, the KEF Q100 for the lower price. The Revel M105 ranks #13 of 87 bookshelf speakers at $1500. The KEF Q100 ranks #68 at $550, $950 cheaper.
What the KEF Q100 offers: 5.25” Uni-Q coaxial driver keeps the tweeter and woofer point-source aligned for consistent imaging. 86dB sensitivity is reasonably easy to drive. Watch for: 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.
What the Revel M105 offers: CEA2034 spinorama shows an essentially flat on-axis response with only a small 5kHz peak, a smooth listening window, and clean waterfall decay. Wide horizontal dispersion gives flexibility with toe-in. The reviewer called it reference-quality performance with minor EQ correction applied. Watch for: Low nominal impedance demands a capable amplifier that can handle low-impedance loads. Bass distortion runs high in the 80-250Hz range from woofer displacement, and maximum output is limited compared to larger designs.
Buy the KEF Q100 if the price matters more than sound quality. Buy the Revel M105 if sound quality matters more than the price.
If sound quality matters at all to you, skip the KEF Q100. It ranks near the bottom of the 87 bookshelf speakers, so look higher up the list instead.
Specifications Side By Side
| KEF Q100 | Revel M105 | |
|---|---|---|
| Price | $550 Discontinued | $1500 Discontinued |
| Ranked | #68 of 87 in Medium Size Bookshelf Speakers | #13 of 87 in Medium Size Bookshelf Speakers |
| Bass Extension (-3dB) | 85Hz (measured, Audio Science Review) | 75Hz (measured, Audio Science Review) |
| Bass Extension (-10dB) | 65Hz (measured, Audio Science Review) | 58Hz (measured, Audio Science Review) |
| Discontinued | Yes | Yes |
| Sensitivity | 85dB (2.83V/1m, measured, Audio Science Review) | 85dB (2.83V/1m, measured, Audio Science Review) |
| Impedance | 8 ohms nominal | 8 ohms nominal, low minimum |
| Frequency Response | 49Hz - 40kHz (+/-3dB) (Manufacturer specified) | 60Hz - 44kHz (+/-3dB) (Manufacturer specified) |
| Drivers | 5.25" Uni-Q aluminum coaxial driver, 1" aluminum dome tweeter | 5.25" aluminum cone woofer, 1" aluminum tweeter with acoustic lens waveguide |
| Weight | 13 lbs / 5.9 kg each | 15.4 lbs / 7 kg each |
| Dimensions | 11.8"H x 7.1"W x 10.7"D (300 x 180 x 272 mm) | 14"H x 7.9"W x 9.8"D (355.6 x 200.7 x 248.9 mm) |
| Woofer Cabinet | ported, rear | ported, rear |
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Prices on this page were last checked August 25, 2026 at 6:19 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 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 |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Revel M105: $1500 Discontinued eBay
Pros: CEA2034 spinorama shows an essentially flat on-axis response with only a small 5kHz peak, a smooth listening window, and clean waterfall decay. Wide horizontal dispersion gives flexibility with toe-in. The reviewer called it reference-quality performance with minor EQ correction applied.
Cons: Low nominal impedance demands a capable amplifier that can handle low-impedance loads. Bass distortion runs high in the 80-250Hz range from woofer displacement, and maximum output is limited compared to larger designs. Discontinued.
Full Revel M105 review and specifications →
| Bass Extension (-10dB) | 58Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 75Hz (measured, Audio Science Review) |
| Dimensions | 14"H x 7.9"W x 9.8"D (355.6 x 200.7 x 248.9 mm) |
| Discontinued | Yes |
| Drivers | 5.25" aluminum cone woofer, 1" aluminum tweeter with acoustic lens waveguide |
| Frequency Response | 60Hz - 44kHz (+/-3dB) (Manufacturer specified) |
| Impedance | 8 ohms nominal, low minimum |
| Sensitivity | 85dB (2.83V/1m, measured, Audio Science Review) |
| Weight | 15.4 lbs / 7 kg each |
| Woofer Cabinet | ported, rear |
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- Head-to-Head Comparisons