Short answer: the KEF R3 Meta for better sound quality, the Monolith Encore B6 for the lower price. The KEF R3 Meta ranks #10 of 131 bookshelf speakers, rated 4.6/5, at $2,499.99. The Monolith Encore B6 ranks #63, rated 3.9/5, at $360, $2,139.99 cheaper.
The case for 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. The tradeoff: 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.
The case for the Monolith Encore B6: For its budget price, the B6 delivers useful midbass punch and a long reflex tail: Erin measured F3 at 68Hz and F10 near 37Hz. The tradeoff: Erin measured 85.3dB sensitivity and a 3.4-ohm minimum, so this is not an easy load despite its modest output ceiling.
Buy the KEF R3 Meta if sound quality is the priority over the price, or the Monolith Encore B6 if the price is the priority over sound quality.
Still deciding? The full Passive Home rankings cover every ranked option.
Specifications Side By Side
| KEF R3 Meta | Monolith Encore B6 | |
|---|---|---|
| Price | $2,499.99 per pair | $360 per pair |
| Ranked | #10 of 131 in Large Size Bookshelf Speakers | #63 of 131 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 37Hz (measured, Erin’s Audio Corner) | 37Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 76Hz (measured, Erin’s Audio Corner) | 68Hz (measured, Erin’s Audio Corner) |
| Dimensions | 16.6”H x 7.9”W x 13.2”D (421.6 x 200.7 x 335.3 mm) | 15.7H x 7.9W x 9.9D inches |
| Impedance | 4 ohms nominal (3.2 ohms minimum above 80Hz, measured, Erin’s Audio Corner) | 4 ohms nominal; 3.4 ohms minimum (measured, Erin’s Audio Corner) |
| Drivers | 6.5” Hybrid aluminum ported woofer, 5” aluminum cone midrange, 1” vented aluminium dome with MAT tweeter | 6.5-inch pulp woofer; 25mm waveguided silk dome |
| Sensitivity | 85.9dB (measured, Erin’s Audio Corner; 87dB manufacturer specified) | 85.3dB/2.83V/1m (measured, Erin’s Audio Corner) |
| Weight | 27.3 lbs (12.4 kg) each | 15.4 lbs (7.0 kg) each |
| Woofer Cabinet | ported | - |
| Spinorama Preference Score | 6.10 | 4.67 |
| Spinorama Preference Score with Perfect Sub | 7.91 | 6.93 |
| DIY Kit | No | No |
Related Speaker Comparisons
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- KEF Reference 1 Meta vs KEF R3 Meta
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- KEF R3 Meta vs March Audio Sointuva AWG
Prices on this page were last checked September 30, 2026 at 2:57 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
Monolith Encore B6: $360 per pair Amazon Monoprice eBay
Pros: For its budget price, the B6 delivers useful midbass punch and a long reflex tail: Erin measured F3 at 68Hz and F10 near 37Hz. The revised tweeter assembly yields broadly smooth horizontal directivity and an early-reflections trend that accepts EQ well. At sane levels, its 6.5-inch pulp woofer provides satisfying attack, and gloss top/bottom panels plus a braced MDF cabinet are unusually substantial for the class. Measured bass extension of 68Hz (-3dB), with a measured sensitivity of 85.3dB.
Cons: Erin measured 85.3dB sensitivity and a 3.4-ohm minimum, so this is not an easy load despite its modest output ceiling. Low-frequency compression reaches about 2dB and distortion rises rapidly when driven full-range; use an 80Hz subwoofer crossover. Response variation is roughly +2.7/-3.7dB, with residual crossover/treble irregularities that keep it from true neutrality without EQ. The listening window tightens vertically, so ear height matters.
Full Monolith Encore B6 review and specifications →
| Bass Extension (-10dB) | 37Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 68Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 15.7H x 7.9W x 9.9D inches |
| Drivers | 6.5-inch pulp woofer; 25mm waveguided silk dome |
| Impedance | 4 ohms nominal; 3.4 ohms minimum (measured, Erin’s Audio Corner) |
| Sensitivity | 85.3dB/2.83V/1m (measured, Erin’s Audio Corner) |
| Spinorama Preference Score | 4.67 |
| Spinorama Preference Score with Perfect Sub | 6.93 |
| Weight | 15.4 lbs (7.0 kg) each |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons