Short answer: the Arendal 1961 Monitor. It ranks #8 of 160 bookshelf speakers by sound quality (rated 4.3/5) at $1,150 and is still sold new; the KEF Q100 ranks #131 (rated 2.4/5) and is discontinued, so it is only an option used. The KEF Q100’s replacement, the KEF Q1 Meta, is rated 3.6/5.
The KEF Q100 is the more accurate choice. 5.25” Uni-Q coaxial driver keeps the tweeter and woofer point-source aligned for consistent imaging. Its measured preference score, a predictor of how neutral it sounds, is 4.96 against 3.38 for the Arendal 1961 Monitor. 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.
The Arendal 1961 Monitor is the better-sounding option. A physically robust build the reviewer calls “a little bit of a tank,” delivering low compression, low distortion, and overall really good neutrality: one of the reviewer’s top 10 picks under $1,500 across roughly 250 speakers tested. The catch: Bass rolls off around 70-80Hz, so it cannot be used as full-range mains for music without a subwoofer, and a sub is recommended for home theater use as well.
Buy the Arendal 1961 Monitor. It is rated higher for sound quality; the KEF Q100 is no longer sold new.
Looking for alternatives? See the complete Passive Home rankings.
Specifications Side By Side
| KEF Q100 | Arendal 1961 Monitor | |
|---|---|---|
| Price | $550 per pair Discontinued | $1150 per pair |
| Ranked | #131 of 160 in Medium Size Bookshelf Speakers | #8 of 160 in Medium Size Bookshelf Speakers |
| Bass Extension (-3dB) | 85Hz (measured, Audio Science Review) | 84Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 65Hz (measured, Audio Science Review) | 60Hz (measured, Erin’s Audio Corner) |
| Sensitivity | 85dB (2.83V/1m, measured, Audio Science Review) | 85.9dB (measured average, Erin’s Audio Corner) |
| Impedance | 8 ohms nominal | 4 ohms nominal (4.1 ohms minimum above 80Hz, measured by Erin’s Audio Corner) |
| Frequency Response | 49Hz - 40kHz (+/-3dB) (Manufacturer specified) | - |
| Drivers | 5.25” Uni-Q aluminum coaxial driver, 1” aluminum dome tweeter | 2 x 5.5” woofers, 28mm tweeter |
| Weight | 13 lbs (5.9 kg) each | 16 lbs (7.25 kg) each |
| Dimensions | 11.8”H x 7.1”W x 10.7”D (300 x 180 x 272 mm) | 16.6”H x 6.4”W x 5.9”D (421.6 x 162.6 x 149.9 mm) |
| Woofer Cabinet | ported, rear | sealed |
| Spinorama Preference Score | 4.96 (spinorama.org) | 3.38 |
| Spinorama Preference Score with Perfect Sub | 7.24 (spinorama.org) | 6.69 |
| DIY Kit | No | No |
| Crossover Frequency | - | 1500Hz |
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Prices on this page were last checked October 7, 2026 at 9:25 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 Q100: $550 per pair Discontinued eBay
Newer model: the KEF Q1 Meta, ranked higher, rated 3.6/5.
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. Measured bass extension of 85Hz (-3dB), with a measured sensitivity of 85dB.
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) |
| DIY Kit | No |
| Dimensions | 11.8”H x 7.1”W x 10.7”D (300 x 180 x 272 mm) |
| 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) |
| Spinorama Preference Score | 4.96 (spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 7.24 (spinorama.org) |
| Weight | 13 lbs (5.9 kg) each |
| Woofer Cabinet | ported, rear |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Arendal 1961 Monitor: $1150 per pair Arendal Sound eBay
Same family: the Arendal Sound 1961 Bookshelf (smaller bookshelf, ranked lower, rated 4.2/5), the Arendal 1961 Tower (floorstanding, rated 4.4/5) and the Arendal Sound 1961 Center (center, rated 3.6/5).
Pros: A physically robust build the reviewer calls “a little bit of a tank,” delivering low compression, low distortion, and overall really good neutrality: one of the reviewer’s top 10 picks under $1,500 across roughly 250 speakers tested. Works well both as home theater mains and as surrounds. Independent ASR Klippel measurements corroborate the low-distortion finding: THD at 86dB SPL/1m stays well below the reviewer’s audibility threshold, and even at 96dB SPL/1m it stays “far better than most bookshelves” thanks to the built-in high-pass filter that protects the woofers. Measured bass extension of 84Hz (-3dB), with a measured sensitivity of 85.9dB.
Cons: Bass rolls off around 70-80Hz, so it cannot be used as full-range mains for music without a subwoofer, and a sub is recommended for home theater use as well. Vertical radiation window is narrow, typical of MTM (mid-tweeter-mid) layouts (tighter than a standard two-way’s roughly ±20°) so a second home theater row sitting above or below the tweeter axis will hear a noticeably different tonal balance. ASR’s CEA2034 measurements show the response is elevated above 2kHz with resonant peaks around 3kHz and 9kHz, leading the reviewer to predict it will “likely sound bright.” Those same resonances show up as lingering ridges in the cumulative spectral decay (waterfall) at 96dB SPL/1m.
Full Arendal 1961 Monitor review and specifications →
| Bass Extension (-10dB) | 60Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 84Hz (measured, Erin’s Audio Corner) |
| Crossover Frequency | 1500Hz |
| DIY Kit | No |
| Dimensions | 16.6”H x 6.4”W x 5.9”D (421.6 x 162.6 x 149.9 mm) |
| Drivers | 2 x 5.5” woofers, 28mm tweeter |
| Impedance | 4 ohms nominal (4.1 ohms minimum above 80Hz, measured by Erin’s Audio Corner) |
| Sensitivity | 85.9dB (measured average, Erin’s Audio Corner) |
| Spinorama Preference Score | 3.38 |
| Spinorama Preference Score with Perfect Sub | 6.69 |
| Weight | 16 lbs (7.25 kg) each |
| Woofer Cabinet | sealed |
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