Short answer: the KEF R3 Meta. It ranks #10 of 131 bookshelf speakers by sound quality, rated 4.6/5, at $2,499.99. The Arendal Sound 1723 Monitor THX ranks #48, rated 4.2/5, at $2,400, $99.99 cheaper, which does not close the gap in sound quality.
Why pick the KEF R3 Meta: Three-way design with an unconventional concentric layout: the 1” tweeter is recessed into the throat of the 5.25” midrange driver, deeper integration than a standard coaxial arrangement. Watch for: Pointed straight on-axis, there’s a 1-2dB bump around 9kHz that stays consistent across angles thanks to the constant-directivity waveguide - only toeing the speaker out about 10° tames it.
Why pick the Arendal Sound 1723 Monitor THX: Independent ASR Klippel data shows a narrow 1.8dB reference band, 0.391 listening-window smoothness, and useful bass extension to 48.3Hz at -6dB. The catch: The measured on-axis average absolute deviation is 0.979dB and the sound-power directivity-index standard deviation is 3.63, so its response and dispersion are less even than the best alternatives.
Buy the KEF R3 Meta. It is rated higher for sound quality, and the $99.99 saving on the Arendal Sound 1723 Monitor THX is not enough to make up the difference.
Want more options? Browse the full Passive Home rankings.
Specifications Side By Side
| KEF R3 Meta | Arendal Sound 1723 Monitor THX | |
|---|---|---|
| Price | $2,499.99 per pair | $2,400 per pair |
| Ranked | #10 of 131 in Large Size Bookshelf Speakers | #48 of 131 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 37Hz (measured, Erin’s Audio Corner) | approximately 37Hz (measured, spinorama.org) |
| Bass Extension (-3dB) | 76Hz (measured, Erin’s Audio Corner) | 63Hz (measured, spinorama.org) |
| Dimensions | 16.6”H x 7.9”W x 13.2”D (421.6 x 200.7 x 335.3 mm) | 15.7”H x 10.8”W x 25”D (400 x 275 x 635 mm) |
| Impedance | 4 ohms nominal (3.2 ohms minimum above 80Hz, measured, Erin’s Audio Corner) | 4 ohms nominal |
| Drivers | 6.5” Hybrid aluminum ported woofer, 5” aluminum cone midrange, 1” vented aluminium dome with MAT tweeter | Two 8-inch woofers; 28mm waveguided tweeter |
| Sensitivity | 85.9dB (measured, Erin’s Audio Corner; 87dB manufacturer specified) | 89dB (manufacturer specified, 2.83V/1m) |
| Weight | 27.3 lbs (12.4 kg) each | 58.9 lbs (26.7 kg) each |
| Woofer Cabinet | ported | - |
| Spinorama Preference Score | 6.10 | 5.16 |
| Spinorama Preference Score with Perfect Sub | 7.91 | 7.30 |
| DIY Kit | No | No |
| Certification | - | THX Ultra |
Related Speaker Comparisons
How KEF R3 Meta compares with other leading options:
- KEF R3 Meta vs Perlisten S4b
- KEF Reference 1 Meta vs KEF R3 Meta
- KEF R3 Meta vs GR-Research NX-Studio
- KEF R3 Meta vs March Audio Sointuva AWG
- AsciLab C6B vs KEF R3 Meta
Prices on this page were last checked September 26, 2026 at 11:14 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 R3 Meta: $2,499.99 per pair Amazon Crutchfield eBay
Pros: Three-way design with an unconventional concentric layout: the 1” tweeter is recessed into the throat of the 5.25” midrange driver, deeper integration than a standard coaxial arrangement. A quasi sealed/ported bass alignment gives an extended low-end shelf tuned to match typical in-room gain, reaching about 50Hz for most content - deeper than recently-tested rivals like the Focal Aria 906, Polk R200, and an 8” Aperion design. Spinorama measurements show class-leading directivity and sound power, plus very linear on-axis response (at the recommended 10° toe-out) and early-reflections directivity, so it takes EQ exceptionally well. The vertical sweet spot extends to about ±20-30° off the reference axis with nearly identical tonality, unusually wide for a two- or three-way design. A clear upgrade over the earlier, non-Meta R3, eliminating the treble brightness the original had even when toed off-axis. Outperforms similarly-priced rivals (Revel M106, Wharfedale Linton, Philharmonic BMR V2, JBL HDI 1600) specifically on directivity and linearity in the reviewer’s measurements. At $2500/pair, called the best value in its class with near-reference-level anechoic performance. Measured bass extension of 76Hz (-3dB), with a measured sensitivity of 85.9dB.
Cons: Pointed straight on-axis, there’s a 1-2dB bump around 9kHz that stays consistent across angles thanks to the constant-directivity waveguide - only toeing the speaker out about 10° tames it. Minimum impedance dips to about 3.2 ohms nominal (EPDR as low as 1.9 ohms), so it needs a 4-ohm-stable amplifier; a standard AVR likely won’t cut it. Distortion crosses the reviewer’s 3% threshold around 80Hz at 96dB output and shows added deviation again near 50Hz, indicating it runs out of headroom at higher volumes - a subwoofer is recommended for loud listening. Horizontal radiation narrows from about ±70° at low frequency to ±40° at high frequency. Below about 100Hz, compression testing shows fairly wide deviations at both 86dB and 96dB output, though the reviewer notes this is typical for speakers in this size and price class. Current R3 owners who are already happy with that speaker have little reason to upgrade.
Full KEF R3 Meta review and specifications →
| Bass Extension (-10dB) | 37Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 76Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 16.6”H x 7.9”W x 13.2”D (421.6 x 200.7 x 335.3 mm) |
| Drivers | 6.5” Hybrid aluminum ported woofer, 5” aluminum cone midrange, 1” vented aluminium dome with MAT tweeter |
| Impedance | 4 ohms nominal (3.2 ohms minimum above 80Hz, measured, Erin’s Audio Corner) |
| Sensitivity | 85.9dB (measured, Erin’s Audio Corner; 87dB manufacturer specified) |
| Spinorama Preference Score | 6.10 |
| Spinorama Preference Score with Perfect Sub | 7.91 |
| Weight | 27.3 lbs (12.4 kg) each |
| Woofer Cabinet | ported |
- Links
- Reviews, Comparisons and Sound Samples
- Erin’s Audio Corner: KEF R3 Meta: The Speaker to Beat. More from Erin’s Audio Corner →
- Erin’s Audio Corner Website KEF R3 Meta Review
- Erin’s Audio Corner: Upgrade Your Sound with These 6 Surprisingly Affordable Speakers!
- Erin’s Audio Corner: My Personal Favorite Speakers Under $2500
- Erin’s Audio Corner: My Top Picks of 2023: Must-Haves Under $3000
- GR-Research: Finally… a Speaker Danny Doesn’t Have to Fix? More from GR-Research →
- New Record Day: The Gold Standard Of "Pretty Good" KEF R3 Meta Review
- Erin’s Audio Corner Measurements (spinorama.org)
- Head-to-Head Comparisons
Arendal Sound 1723 Monitor THX: $2,400 per pair Arendal Sound eBay
Pros: Independent ASR Klippel data shows a narrow 1.8dB reference band, 0.391 listening-window smoothness, and useful bass extension to 48.3Hz at -6dB. Its preference score rises from 5.16 to 7.30 with a subwoofer. Dual 8-inch woofers, a waveguided tweeter, robust HDF construction, and THX Ultra certification suit high-output rooms. Measured bass extension of 63Hz (-3dB).
Cons: The measured on-axis average absolute deviation is 0.979dB and the sound-power directivity-index standard deviation is 3.63, so its response and dispersion are less even than the best alternatives. Bass reaches only 63Hz at -3dB despite the very large cabinet, and the 1.239 low-frequency Q indicates a pronounced alignment. At roughly 60 lb each, these require substantial stands and space.
Full Arendal Sound 1723 Monitor THX review and specifications →
| Bass Extension (-10dB) | approximately 37Hz (measured, spinorama.org) |
|---|---|
| Bass Extension (-3dB) | 63Hz (measured, spinorama.org) |
| Certification | THX Ultra |
| DIY Kit | No |
| Dimensions | 15.7”H x 10.8”W x 25”D (400 x 275 x 635 mm) |
| Drivers | Two 8-inch woofers; 28mm waveguided tweeter |
| Impedance | 4 ohms nominal |
| Sensitivity | 89dB (manufacturer specified, 2.83V/1m) |
| Spinorama Preference Score | 5.16 |
| Spinorama Preference Score with Perfect Sub | 7.30 |
| Weight | 58.9 lbs (26.7 kg) each |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons