Short answer: the Yamaha NS-800A. It ranks #43 of 100 bookshelf speakers by sound quality at $4800; the Dynaudio Contour 20i ranks #45 and costs $5750, so there is not much of a tradeoff to weigh.
On the Yamaha NS-800A side: Exceptionally well-built cabinet with no internal resonance issues at all - confirmed clean in both burst decay and impedance measurements. Set against that: 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.
The case for the Dynaudio Contour 20i: Two-way design with a 1.125” Esotar2i silk dome tweeter and a 7” magnesium silicate polymer woofer in a vented enclosure. The tradeoff: Notably room-dependent: sounds too bright in the lower treble in smaller rooms with close sidewalls, needing sidewall absorption to sound neutral.
Buy the Yamaha NS-800A. It ranks higher for sound quality than the Dynaudio Contour 20i and costs less, so there is no real case for the other one.
Specifications Side By Side
| Yamaha NS-800A | Dynaudio Contour 20i | |
|---|---|---|
| Price | $4800 | $5750 |
| Ranked | #43 of 100 in Large Size Bookshelf Speakers | #45 of 100 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 35Hz (measured, Erin’s Audio Corner) | 32Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 68Hz (measured, Erin’s Audio Corner) | 56Hz (measured, Erin’s Audio Corner) |
| Impedance | 6 ohms nominal, 4.3 ohms minimum (measured above 80Hz, Erin’s Audio Corner) | 4 ohms |
| Sensitivity | 84.9dB (measured average 300Hz-3kHz @ 2.83V/1m, Erin’s Audio Corner; 86.5dB manufacturer specified) | 82.5dB |
| Drivers | 1.25" dome tweeter, 6.5" mid-woofer | 18 cm MSP woofer, 28mm Esotar 2i with Hexis tweeter |
| Weight | 28.7 lbs / 13.0 kg (28.7 lbs) each | 30.9 lbs / 14 kg each |
| Dimensions | 16.5"H x 9.1"W x 14.1"D (419.1 x 231.8 x 358.8 mm) | 17.4"H x 8.5"W x 14.2"D (442 x 215.9 x 360.7 mm) |
| Woofer Cabinet | Bass reflex | ported, rear |
| Crossover Frequency | 2600Hz | - |
| Output Power | 40W nominal, 120W max | - |
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The Two Speakers In Full
Yamaha NS-800A: $4800 The Music Room
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.
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 $4,800 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 |
| 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) |
| Output Power | 40W nominal, 120W max |
| Sensitivity | 84.9dB (measured average 300Hz-3kHz @ 2.83V/1m, Erin's Audio Corner; 86.5dB manufacturer specified) |
| Weight | 28.7 lbs / 13.0 kg (28.7 lbs) each |
| Woofer Cabinet | Bass reflex |
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- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Yamaha NS-800A vs Definitive Technology Demand D11
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Dynaudio Contour 20i: $5750 Safeandsoundhq
Pros: Two-way design with a 1.125” Esotar2i silk dome tweeter and a 7” magnesium silicate polymer woofer in a vented enclosure. A shallow bass rolloff profile lets it sit closer to a wall (about 1-2 feet worked best in testing) without becoming boomy, and makes subwoofer integration comparatively easy. Very wide horizontal radiation (about ±70° through the midrange) gives an enveloping, spacious sound in a suitably sized room. On-axis response holds within about ±3dB overall and ±1.5dB through the midrange. Attractive build quality with a distinctive metal front baffle and gloss finish options. Long-term compression stays good up to 96dB, and short-term compression is within about 0.5dB at that same level.
Cons: Notably room-dependent: sounds too bright in the lower treble in smaller rooms with close sidewalls, needing sidewall absorption to sound neutral, while performing better in larger or more open rooms without that treatment. A roughly 2dB lift in the lower treble combined with wide dispersion means more energy reflecting off sidewalls than some listeners will prefer. Relatively low sensitivity (about 82.5dB measured). Unusually sensitive to amplifier output impedance - high-output-impedance amps like tube or SET designs introduce up to a 2dB dip in the midrange, making the sound more mellow rather than “warmer,” the opposite of what many tube-amp buyers expect. Elevated harmonic and multitone distortion around 700Hz, which the reviewer attributes to typical cone-edge/surround behavior common across many driver brands, though it stands out on the measurement graphs. An upper-midrange dip around 2kHz can reduce attack and clarity on vocals and brass instruments. Vertical listening window is fairly narrow (roughly -20° to +30°) - moving outside that range causes a noticeable tonal shift, unlike coaxial designs that tolerate more vertical movement.
Full Dynaudio Contour 20i review and specifications →
| Bass Extension (-10dB) | 32Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 56Hz (measured, Erin's Audio Corner) |
| Dimensions | 17.4"H x 8.5"W x 14.2"D (442 x 215.9 x 360.7 mm) |
| Drivers | 18 cm MSP woofer, 28mm Esotar 2i with Hexis tweeter |
| Impedance | 4 ohms |
| Sensitivity | 82.5dB |
| Weight | 30.9 lbs / 14 kg each |
| Woofer Cabinet | ported, rear |
As an eBay Partner, we may be compensated if you make a purchase.
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Dynaudio Contour 20i vs Definitive Technology Demand D11
- Dynaudio Contour 20i vs SVS Ultra Bookshelf
- Dynaudio Contour 20i vs ELAC DBR62
- Dynaudio Contour 20i vs ELAC Uni-Fi Reference UBR62
- Dynaudio Contour 20i vs Infinity Reference R162
- Dynaudio Contour 20i vs Danley SH50
- Dynaudio Contour 20i vs Revel Concerta2 M16
- Dynaudio Contour 20i vs Klipsch RP-600M II
- See all 10 comparisons