Short answer: the March Audio Sointuva AWG for measured driver quality, the Reference 1 Meta for build technology. The Sointuva AWG’s Purifi drivers deliver exceptionally low midrange distortion the reviewer calls “world class”, though its listening axis sits about 7° above the tweeter. The Reference 1 Meta places a Helmholtz resonator behind the tweeter, but it costs $9999.98 and its radiation narrows from about ±60° in the midrange to ±50°.
What the KEF Reference 1 Meta gets right: Meta technology places a Helmholtz-style resonator behind the tweeter to absorb rear-radiated resonance. The tradeoff: At roughly $9,000/pair, nearly four times the cost of the similarly-sized KEF R3. Radiation narrows from about ±60° in the midrange to ±50°.
On the March Audio Sointuva AWG side: Purifi drivers deliver exceptionally low midrange distortion - the reviewer calls them “world class” - paired with bass extension unusually. Set against that: Correct listening axis sits about 7° above the tweeter line.
Buy the KEF Reference 1 Meta if sound quality is the priority over the price, or the March Audio Sointuva AWG 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 Reference 1 Meta | March Audio Sointuva AWG | |
|---|---|---|
| Price | $10000 per pair | $4150 per pair |
| Ranked | #3 of 130 in Large Size Bookshelf Speakers | #5 of 130 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 32Hz (measured, Erin's Audio Corner) | 30Hz (measured, Erin's Audio Corner) |
| Bass Extension (-3dB) | 52Hz (measured, Erin's Audio Corner) | 40Hz (measured, Erin's Audio Corner) |
| Dimensions | 17.3"H x 8.1"W x 16.6"D (439.4 x 205.7 x 421.6 mm) | 17.7"H x 9.4"W x 8.7"D (449.6 x 238.8 x 221 mm) |
| Impedance | 4 ohms nominal, 2.9 ohms minimum (measured, Erin's Audio Corner) | 6 ohms |
| Drivers | 165 mm (6.5 in.) aluminium cone woofer, 125 mm (5 in.) aluminium cone midrange, 25 mm (1 in.) aluminium dome with MAT tweeter | 6.5" Purifi PTT-OEM Midwoofer, Satori TW29BNWG-4 Beryllium Dome Tweeter with Waveguide |
| Sensitivity | 82.5dB (measured average, Erin's Audio Corner) | 82.4dB (measured, Erin's Audio Corner) |
| Weight | 40.1 lbs (18.2 kg) each | 11 lbs (5 kg) |
| Woofer Cabinet | ported, rear | passive radiator |
| Spinorama Preference Score | 5.84 | 6.50 |
| Spinorama Preference Score with Perfect Sub | 7.65 | 7.99 |
Related Speaker Comparisons
How KEF Reference 1 Meta compares with other leading options:
- Perlisten S4b vs KEF Reference 1 Meta
- GR-Research NX-Studio vs KEF Reference 1 Meta
- AsciLab C6B vs KEF Reference 1 Meta
- Audio First Cadentia 3 vs KEF Reference 1 Meta
- KEF Reference 1 Meta vs Revel M106
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The Two Speakers In Full
KEF Reference 1 Meta: $10000 per pair Kef eBay
Pros: Meta technology places a Helmholtz-style resonator behind the tweeter to absorb rear-radiated resonance, and pair matching is within about ±0.5dB - unusually tight for a passive speaker. Sounds most neutral pointed straight on-axis rather than toed out, with no 5-8kHz harshness of the kind that plagues many speakers marketed as “detailed.” One of the most three-dimensional soundstages the reviewer has heard from a passive speaker, beaten only by $13,000+ active Xmachina Pulsar MK2 monitors (though this speaker’s tonality was preferred). Distortion stays below 1% down to about 70Hz at 86dB, and below 1% to ~150Hz / below 3% to ~70Hz even at 96dB. High-frequency response holds essentially flat as volume increases - no audible crossover or voice-coil compression - giving strong dynamic range up to its output limit (about 98dB at 3.5 meters before the woofer starts running out of excursion). All-passive design still measures ±1.5dB from 80Hz to 16kHz with zero DSP. Swappable dual-port system (long port for near-wall placement, short port for out-into-the-room placement with more bass extension) lets you tune bass behavior to where the speaker actually sits. Measured bass extension of 52Hz (-3dB), with a measured sensitivity of 82.5dB.
Cons: At roughly $10000/pair, nearly four times the cost of the similarly-sized KEF R3. Radiation narrows from about ±60° in the midrange to ±50° at high frequency - tighter than the reviewer’s ~70° preference (though wider than the R3’s ~±40°); toeing the speakers out for more width sacrifices treble energy that then needs EQ to restore. Moderate-to-low sensitivity (measured 83-84dB) calls for a solid amplifier. In-room bass only extends to about 40Hz, so a subwoofer is worth adding for bass-heavy material at higher volumes or listening beyond 3-4 meters. Minor directivity mismatch around 2kHz shows up in measurements, likely a vertical diffraction effect that wasn’t fully explained. Bass port choice (long vs. short) meaningfully changes the sound depending on placement, so the wrong port for your room can leave the bass sounding off until you experiment.
Full KEF Reference 1 Meta review and specifications →
| Bass Extension (-10dB) | 32Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 52Hz (measured, Erin's Audio Corner) |
| Dimensions | 17.3"H x 8.1"W x 16.6"D (439.4 x 205.7 x 421.6 mm) |
| Drivers | 165 mm (6.5 in.) aluminium cone woofer, 125 mm (5 in.) aluminium cone midrange, 25 mm (1 in.) aluminium dome with MAT tweeter |
| Impedance | 4 ohms nominal, 2.9 ohms minimum (measured, Erin's Audio Corner) |
| Sensitivity | 82.5dB (measured average, Erin's Audio Corner) |
| Spinorama Preference Score | 5.84 |
| Spinorama Preference Score with Perfect Sub | 7.65 |
| Weight | 40.1 lbs (18.2 kg) each |
| Woofer Cabinet | ported, rear |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- KEF Reference 1 Meta vs GR-Research NX-Studio
- KEF Reference 1 Meta vs Perlisten S4b
- KEF Reference 1 Meta vs AsciLab C6B
- KEF Reference 1 Meta vs Audio First Cadentia 3
- KEF Reference 1 Meta vs Revel M106
- KEF Reference 1 Meta vs KEF R3 Meta
- KEF Reference 1 Meta vs KEF Q Concerto Meta
- KEF Reference 1 Meta vs Wharfedale Aura 2
- See all 46 comparisons
March Audio Sointuva AWG: $4150 per pair Marchaudio eBay
Pros: Purifi drivers deliver exceptionally low midrange distortion - the reviewer calls them “world class” - paired with bass extension unusually deep for a bookshelf (F3 40Hz, F10 30Hz), reaching down to about 30Hz in-room with some boundary reinforcement. Sensitivity tolerance band measured extremely tight at 1.6-1.73dB, indicating excellent build consistency. Estimated in-room response is exceptionally smooth and neutral - one of the flattest the reviewer has measured, with none of the usual coloration descriptors (bright, boomy, nasal, shouty) needed to describe it. Distortion stays so low even at loud volumes that there’s no audible warning cue before you’re playing dangerously loud - a backhanded compliment to how clean it sounds. At $4150/pair, ranked among the reviewer’s top three bookshelf speakers in that price range. Measured bass extension of 40Hz (-3dB), with a measured sensitivity of 82.4dB.
Cons: Correct listening axis sits about 7° above the tweeter line, which means shorter stands (around 24”) than typical bookshelf stands are sold at - get the height wrong and the sound scoops out in the mid/high frequencies. Moderate-low sensitivity (~82dB) is roughly 3dB below a typical bookshelf speaker, meaning close to double the amplifier power is needed for the same output; low impedance also calls for a 4-ohm capable amp. Horizontal radiation holds a wide ±60° only up to about 3kHz before narrowing - tighter top-end dispersion than the reviewer’s preferred ±60-70° through the treble, and the reason he left the previous generation off his all-time top-five list. Multitone distortion rises above the reviewer’s personal 3% threshold in the 1-2kHz region, though it wasn’t audible in his listening. Not intended to be crossed over with a subwoofer at 80Hz - designed to play full-range down to 40-50Hz, so pairing it with a sub and cutting it off early wastes its bass capability. Best positioned about 3 feet from the rear wall, requiring more floor space than many bookshelf speakers.
Full March Audio Sointuva AWG review and specifications →
| Bass Extension (-10dB) | 30Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 40Hz (measured, Erin's Audio Corner) |
| Dimensions | 17.7"H x 9.4"W x 8.7"D (449.6 x 238.8 x 221 mm) |
| Drivers | 6.5" Purifi PTT-OEM Midwoofer, Satori TW29BNWG-4 Beryllium Dome Tweeter with Waveguide |
| Impedance | 6 ohms |
| Sensitivity | 82.4dB (measured, Erin's Audio Corner) |
| Spinorama Preference Score | 6.50 |
| Spinorama Preference Score with Perfect Sub | 7.99 |
| Weight | 11 lbs (5 kg) |
| Woofer Cabinet | passive radiator |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- March Audio Sointuva AWG vs GR-Research NX-Studio
- March Audio Sointuva AWG vs AsciLab C6B
- March Audio Sointuva AWG vs KEF R3 Meta
- March Audio Sointuva AWG vs KEF Q Concerto Meta
- March Audio Sointuva AWG vs Wharfedale Aura 2
- March Audio Sointuva AWG vs MoFi SourcePoint 8
- March Audio Sointuva AWG vs GR-Research NX-Bravo
- March Audio Sointuva AWG vs Wharfedale Linton 85
- See all 10 comparisons