Short answer: the KEF R3. It ranks #15 of 131 bookshelf speakers by sound quality, rated 4.5/5, at $2,200; the Yamaha NS-800A ranks #56, rated 4.0/5, and costs $4,800, so there is little reason to consider the other one.
The case for the KEF R3: True three-way stand-mount with a 6.5-inch woofer below KEF’s 5-inch Uni-Q midrange/1-inch tweeter. The catch: The low-frequency alignment rolls gradually rather than delivering high-output sub-bass; KEF specifies 58Hz +/-3dB and Erin’s high-level data supports using an 80Hz subwoofer crossover.
What the Yamaha NS-800A does well: Exceptionally well-built cabinet with no internal resonance issues at all - confirmed clean in both burst decay and impedance measurements. The tradeoff: A wide, roughly 2kHz-10kHz scoop in the upper-midrange/lower-treble gives it a laidback, soft, low-attack character - notably worse than the reviewer’s Audio First Fidelia reference in an A/B comparison.
Buy the KEF R3. It is rated higher for sound quality than the Yamaha NS-800A and costs less, so only choose the other one for a particular feature it does better.
Looking for alternatives? See the complete Passive Home rankings.
Specifications Side By Side
| KEF R3 | Yamaha NS-800A | |
|---|---|---|
| Price | $2,200 per pair | $4800 per pair |
| Ranked | #15 of 131 in Large Size Bookshelf Speakers | #56 of 131 in Large Size Bookshelf Speakers |
| Bass Extension (-3dB) | Approximately 58Hz (manufacturer specified; consistent with Erin’s measured roll-off) | 68Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 35.2Hz (measured, Audio Science Review) | 35Hz (measured, Erin’s Audio Corner) |
| Sensitivity | Approximately 86-87dB/2.83V/1m (measured, Erin’s Audio Corner) | 84.9dB (measured average 300Hz-3kHz @ 2.83V/1m, Erin’s Audio Corner; 86.5dB manufacturer specified) |
| Impedance | 8 ohms nominal; suitable for Erin’s 4/8-ohm-rated amplifier | 6 ohms nominal, 4.3 ohms minimum (measured above 80Hz, Erin’s Audio Corner) |
| Drivers | 1” tweeter coaxial with 5” midrange; 6.5” woofer | 1.25” dome tweeter, 6.5” mid-woofer |
| Dimensions | 16.6”H x 7.9”W x 13.2”D | 16.5”H x 9.1”W x 14.1”D (419.1 x 231.8 x 358.8 mm) |
| Woofer Cabinet | ported, rear Flexible Port | Bass reflex |
| Weight | 29.9 lbs (13.55 kg) each | 28.7 lbs (13.0 kg) each |
| Spinorama Preference Score | 6.2 (spinorama.org) | 4.66 |
| Spinorama Preference Score with Perfect Sub | 7.97 (spinorama.org) | 6.43 |
| DIY Kit | No | No |
| Crossover Frequency | - | 2600Hz |
| Power Handling | - | 40W nominal, 120W max |
Related Speaker Comparisons
How KEF R3 compares with other leading options:
- KEF R3 vs Perlisten S4b
- KEF Reference 1 Meta vs KEF R3
- KEF R3 vs GR-Research NX-Studio
- AsciLab C6B vs KEF R3
- KEF R3 vs Audio First Cadentia 3
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.
As an eBay Partner, we may be compensated if you make a purchase.
The Two Speakers In Full
KEF R3: $2,200 per pair Amazon eBay
Pros: True three-way stand-mount with a 6.5-inch woofer below KEF’s 5-inch Uni-Q midrange/1-inch tweeter. Erin measured approximately 86-87dB/2.83V/1m sensitivity, exceptionally low sub-1% distortion at 86dB and orderly directivity in both planes. The coaxial geometry maintains image stability across seats, while Flexible Port Technology avoids the strong midrange port resonance common to rear-vented competitors. A 110W Parasound drove it successfully in Erin’s listening. Measured bass extension of 35.2Hz (-10dB), with a measured sensitivity of 87dB.
Cons: The low-frequency alignment rolls gradually rather than delivering high-output sub-bass; KEF specifies 58Hz +/-3dB and Erin’s high-level data supports using an 80Hz subwoofer crossover. Narrow high-frequency features and natural Uni-Q narrowing toward the top octave make toe angle audible, although off-axis tracking remains smooth. Sensitivity is moderate, the cabinet weighs almost 30 lb, and this original R3 lacks the Meta successor’s MAT absorber.
Full KEF R3 review and specifications →
| Bass Extension (-10dB) | 35.2Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | Approximately 58Hz (manufacturer specified; consistent with Erin’s measured roll-off) |
| DIY Kit | No |
| Dimensions | 16.6”H x 7.9”W x 13.2”D |
| Drivers | 1” tweeter coaxial with 5” midrange; 6.5” woofer |
| Impedance | 8 ohms nominal; suitable for Erin’s 4/8-ohm-rated amplifier |
| Sensitivity | Approximately 86-87dB/2.83V/1m (measured, Erin’s Audio Corner) |
| Spinorama Preference Score | 6.2 (spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 7.97 (spinorama.org) |
| Weight | 29.9 lbs (13.55 kg) each |
| Woofer Cabinet | ported, rear Flexible Port |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Yamaha NS-800A: $4800 per pair The Music Room eBay
Pros: Exceptionally well-built cabinet with no internal resonance issues at all - confirmed clean in both burst decay and impedance measurements. Good, wide directivity (~75 degrees horizontal) that stays consistent enough to EQ successfully. Distortion is low, staying under 3% at 96dB, and dynamic range holds up well until right near its 102dB limit. A shallower, higher-frequency bass rolloff profile (F3 68Hz, F10 35Hz) means it can be placed closer to the wall (about a foot) without turning boomy, actually gaining bass presence rather than losing it. Measured bass extension of 68Hz (-3dB), with a measured sensitivity of 84.9dB.
Cons: A wide, roughly 2kHz-10kHz scoop in the upper-midrange/lower-treble gives it a laidback, soft, low-attack character - notably worse than the reviewer’s Audio First Fidelia reference in an A/B comparison. On top of that, treble breaks up badly above 10kHz, swinging up as much as 8dB - a significant, named flaw. Sounds inconsistently voiced as a result (bright on some material like cymbals and shakers, dull/laidback on vocals and instrument attack) until corrected with real parametric EQ (the reviewer needed a +2dB boost around 4.5kHz at Q0.5 plus taming the treble spike to bring it to life) combined with near-wall placement and 30-degree toe-out. Without that combination, it’s a tough sale for a $4800 bookshelf speaker.
Full Yamaha NS-800A review and specifications →
| Bass Extension (-10dB) | 35Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 68Hz (measured, Erin’s Audio Corner) |
| Crossover Frequency | 2600Hz |
| DIY Kit | No |
| Dimensions | 16.5”H x 9.1”W x 14.1”D (419.1 x 231.8 x 358.8 mm) |
| Drivers | 1.25” dome tweeter, 6.5” mid-woofer |
| Impedance | 6 ohms nominal, 4.3 ohms minimum (measured above 80Hz, Erin’s Audio Corner) |
| Power Handling | 40W nominal, 120W max |
| Sensitivity | 84.9dB (measured average 300Hz-3kHz @ 2.83V/1m, Erin’s Audio Corner; 86.5dB manufacturer specified) |
| Spinorama Preference Score | 4.66 |
| Spinorama Preference Score with Perfect Sub | 6.43 |
| Weight | 28.7 lbs (13.0 kg) each |
| Woofer Cabinet | Bass reflex |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Yamaha NS-800A vs Definitive Technology Demand D11
- Yamaha NS-800A vs ELAC DBR62
- Yamaha NS-800A vs ELAC Uni-Fi Reference UBR62
- Yamaha NS-800A vs Technics SB-C700
- Yamaha NS-800A vs Dynaudio Contour 20i
- Yamaha NS-800A vs Revel Concerta2 M16
- Yamaha NS-800A vs SVS Ultra Bookshelf
- Yamaha NS-800A vs Infinity Reference R162
- See all 22 comparisons