Short answer: the KEF Q100 for better sound quality, the Q Acoustics 3020i for the lower price. The KEF Q100 ranks #38 of 56 bookshelf speakers at $550. The Q Acoustics 3020i ranks #39 at $314.99, $235.01 cheaper.
On the KEF Q100 side: 5.25” Uni-Q coaxial driver keeps the tweeter and woofer point-source aligned for consistent imaging. Set against that: 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.
What the Q Acoustics 3020i gets right: UK-designed (Finkteam) with attractive styling, including recessed binding posts and custom connectors. The catch: On-axis response shows a rising upper-frequency trend and a dip in the 2-4kHz crossover region alongside two resonance-related dips; a significant resonance appears at 366Hz in the waterfall plot.
Buy the KEF Q100 if sound quality matters more than the price. Buy the Q Acoustics 3020i if the price matters more than sound quality.
Specifications Side By Side
| KEF Q100 | Q Acoustics 3020i | |
|---|---|---|
| Price | $550 Discontinued | $314.99 |
| Ranked | #38 of 56 in Medium Size Bookshelf Speakers | #39 of 56 in Medium Size Bookshelf Speakers |
| Bass Extension (-3dB) | 85Hz (measured, Audio Science Review) | - |
| Bass Extension (-10dB) | 65Hz (measured, Audio Science Review) | - |
| Discontinued | Yes | - |
| Sensitivity | 85dB (2.83V/1m, measured, Audio Science Review) | 86dB (2.83V/1m, manufacturer specified) |
| Impedance | 8 ohms nominal | 6 ohms nominal, 4 ohms minimum |
| Frequency Response | 49Hz - 40kHz (+/-3dB) (Manufacturer specified) | - |
| Drivers | 5.25" Uni-Q aluminum coaxial driver, 1" aluminum dome tweeter | 125mm (5") bass driver, 22mm (0.9") tweeter |
| Weight | 13 lbs / 5.9 kg each | 10.6 lbs / 4.8 kg each |
| Dimensions | 11.8"H x 7.1"W x 10.7"D (300 x 180 x 272 mm) | 10.9"H x 6.7"W x 11.1"D (278 x 170 x 282 mm) |
| Woofer Cabinet | ported, rear | ported, reflex |
| Crossover Frequency | - | 2.4kHz |
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The Two Speakers In Full
KEF Q100: $550 Discontinued
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 |
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- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Q Acoustics 3020i: $314.99 Amazon
Pros: UK-designed (Finkteam) with attractive styling, including recessed binding posts and custom connectors. Vertical directivity is good enough that the tweeter doesn’t need to be exactly at ear level. With EQ correction, especially high-frequency shelving and a sub-40Hz high-pass filter, Amir found performance “improves substantially.”
Cons: On-axis response shows a rising upper-frequency trend and a dip in the 2-4kHz crossover region alongside two resonance-related dips; a significant resonance appears at 366Hz in the waterfall plot. Horizontal directivity is narrow and uneven due to a woofer/tweeter beamwidth mismatch. Amir cautions the speaker is “merely a distortion generator” if played too low, and its low impedance demands a quality amplifier. Without EQ, Amir “can’t recommend the Q Acoustics 3020i.”
Full Q Acoustics 3020i review and specifications →
| Crossover Frequency | 2.4kHz |
|---|---|
| Dimensions | 10.9"H x 6.7"W x 11.1"D (278 x 170 x 282 mm) |
| Drivers | 125mm (5") bass driver, 22mm (0.9") tweeter |
| Impedance | 6 ohms nominal, 4 ohms minimum |
| Sensitivity | 86dB (2.83V/1m, manufacturer specified) |
| Weight | 10.6 lbs / 4.8 kg each |
| Woofer Cabinet | ported, reflex |
As an eBay Partner, we may be compensated if you make a purchase.
- Reviews, Comparisons and Sound Samples
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