Short answer: the March Audio Sointuva AWG, if you are buying new. The March Audio Sointuva measures as well as the KEF R3 Meta (#8 vs #10 of 222 bookshelf speakers) but is discontinued; its replacement, the March Audio Sointuva AWG, is rated 4.7/5 at $4,150 and is still sold new.
Why pick the KEF R3 Meta: 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. 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 March Audio Sointuva is the more accurate, deeper-bass pick. A compact bookshelf speaker with Purifi drivers, extremely low distortion, and deep bass from passive radiators, now discontinued but worth buying used. Its measured preference score, a predictor of how neutral it sounds, is 6.80 against 6.10 for the KEF R3 Meta. Its bass reaches about 50Hz before falling 3dB, against 76Hz for the KEF R3 Meta. Watch for: Erin measured a 3.8-ohm minimum and an average load near four ohms; combined with ~83dB sensitivity, this demands a powerful four-ohm-stable amplifier even though the drivers tolerate that power cleanly.
Buy the March Audio Sointuva AWG, the replacement for the discontinued March Audio Sointuva; it is rated higher for sound quality than the KEF R3 Meta.
Want more options? Browse the full Passive Home rankings.
Measured Differences
- Tonal accuracy above the bass: with a subwoofer taking the low end, the March Audio Sointuva scores 8.4 against 7.9 for the KEF R3 Meta on the Spinorama preference scale. Its frequency response and off-axis sound are smoother, so voices and instruments sound closer to the recording.
- Efficiency: the KEF R3 Meta is rated at 85.9 dB sensitivity against 83 dB for the March Audio Sointuva, so it plays as loud with roughly two thirds of the amplifier power.
- Close enough not to matter: bass extension (37 Hz vs 32.7 Hz, 10 dB down).
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Specifications Side By Side
| KEF R3 Meta | March Audio Sointuva | |
|---|---|---|
| Price | $2,499.99 per pair | $3,995 per pair Discontinued |
| Ranked | #10 of 222 in Large Size Bookshelf Speakers | #8 of 222 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 37Hz (measured, Erin’s Audio Corner) | 32.7Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 76Hz (measured, Erin’s Audio Corner) | ~50Hz (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) | 17.7”H x 9.4”W x 8.7”D (450 x 240 x 220 mm) |
| Impedance | 4 ohms nominal (3.2 ohms minimum above 80Hz, measured, Erin’s Audio Corner) | ~4 ohms average; 3.8 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 Purifi woofer; Satori waveguided dome tweeter; dual passive radiators |
| Sensitivity | 85.9dB (measured, Erin’s Audio Corner; 87dB manufacturer specified) | ~83dB/2.83V/1m (measured, Erin’s Audio Corner) |
| Weight | 27.3 lbs (12.4 kg) each | 14.6 lbs (6.6 kg) each |
| Woofer Cabinet | ported | - |
| Spinorama Preference Score | 6.10 | 6.80 |
| Spinorama Preference Score with Perfect Sub | 7.91 | 8.45 |
| DIY Kit | No | No |
| Enclosure | - | Dual passive radiator |
Where the Ratings Come From
- KEF R3 Meta: Spinorama.org measurements and reviews by Erin’s Audio Corner, GR-Research and New Record Day.
- March Audio Sointuva: 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.
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