Short answer: the KEF R3 Meta. It ranks #10 of 222 bookshelf speakers by sound quality (rated 4.6/5) at $2,499.99 and is still sold new; the Monolith Encore B6 ranks #99 (rated 3.9/5) and is discontinued, so it is only an option used.
The KEF R3 Meta is the more accurate pick. A three way bookshelf speaker with KEF’s coaxial driver, superb accuracy that holds across the room, and bass that reaches deep for its size. Its measured preference score, a predictor of how neutral it sounds, is 6.10 against 4.67 for the Monolith Encore B6. The catch: 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 Monolith Encore B6 is the deeper-bass choice. Budget bookshelf speakers with punchy midbass, smooth wide dispersion and an unusually solid braced cabinet for the price. Its bass reaches about 68Hz before falling 3dB, against 76Hz for the KEF R3 Meta. The catch: 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. It is rated higher for sound quality and still sold new, while the Monolith Encore B6 is discontinued.
Still deciding? The full Passive Home rankings cover every ranked option.
Measured Differences
- Tonal accuracy above the bass: with a subwoofer taking the low end, the KEF R3 Meta scores 7.9 against 6.9 for the Monolith Encore B6 on the Spinorama preference scale. Its frequency response and off-axis sound are smoother, so voices and instruments sound closer to the recording.
- Close enough not to matter: bass extension (37 Hz vs 37 Hz, 10 dB down).
Prices on this page were last checked November 14, 2026 at 6:17 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.
As an eBay Partner, we may be compensated if you make a purchase.
Specifications Side By Side
| KEF R3 Meta | Monolith Encore B6 | |
|---|---|---|
| Price | $2,499.99 per pair | $360 per pair Discontinued |
| Ranked | #10 of 222 in Large Size Bookshelf Speakers | #99 of 222 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 |
Where the Ratings Come From
- KEF R3 Meta: Spinorama.org measurements and reviews by Erin’s Audio Corner, GR-Research and New Record Day.
- Monolith Encore B6: Spinorama.org measurements and reviews by Erin’s Audio Corner video.
This comparison is generated from the ratings, specifications and measurements on each product’s own page, and it updates when that data changes. How we rank explains how each rating is decided.
Related Speaker Comparisons
More top alternatives to KEF R3 Meta: