Short answer: the SVS Ultra Bookshelf for linearity, the Dynaudio Contour 20i if you can treat the room. The Ultra stays within about -3dB/+1.5dB on average, noticeably more neutral than the cheaper SVS Prime Bookshelf, though it still has a boosted upper mid-range area the reviewer suspects is a baffle-step or tweeter-level issue rather than a resonance. The Contour 20i sounds too bright in the lower treble in small rooms with close sidewalls.
Buy the Dynaudio Contour 20i new; the SVS Ultra Bookshelf is no longer sold new, so it only makes sense as a used find.
Still deciding? The full Passive Home rankings cover every ranked option.
Specifications Side By Side
| Dynaudio Contour 20i | SVS Ultra Bookshelf | |
|---|---|---|
| Price | $5750 per pair | $1,200 per pair Discontinued |
| Ranked | #62 of 134 in Large Size Bookshelf Speakers | #64 of 134 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 32Hz (measured, Erin’s Audio Corner) | 48Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 56Hz (measured, Erin’s Audio Corner) | 69Hz (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) | 14.9”H x 8.5”W x 10”D |
| Impedance | 4 ohms | 8 ohms nominal, 3.8 ohms minimum (measured, Erin’s Audio Corner) |
| Sensitivity | 82.5dB | 87.8dB (measured average, Erin’s Audio Corner) |
| Drivers | 18 cm MSP woofer, 28mm Esotar 2i with Hexis tweeter | 6.5” composite glass fiber cone woofer, 1” aluminum dome tweeter |
| Weight | 30.9 lbs (14 kg) each | 19 lbs (8.6 kg) each |
| Woofer Cabinet | ported, rear | - |
| DIY Kit | No | No |
| Frequency Response | - | 45Hz - 32kHz (manufacturer specified) |
| Recommended Power | - | 20-150W |
| Spinorama Preference Score | - | 5.63 |
| Spinorama Preference Score with Perfect Sub | - | 8.10 |
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Prices on this page were last checked October 2, 2026 at 10:18 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.
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The Two Speakers In Full
Dynaudio Contour 20i: $5750 per pair Safe and Sound HQ eBay
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. Measured bass extension of 56Hz (-3dB).
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) |
| DIY Kit | No |
| 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 |
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SVS Ultra Bookshelf: $1,200 per pair Discontinued eBay
Newer model: the SVS Ultra Evolution Bookshelf. It’s likely to perform similarly, though we can’t confirm that yet.
Pros: Noticeably more tonally neutral than the cheaper SVS Prime Bookshelf, with response staying within about -3dB/+1.5dB on average: a genuine step up in linearity for roughly double the price. Slightly higher sensitivity than the Prime (about 87.8dB) with similarly wide, consistent horizontal radiation. Toeing the speakers out about 30 degrees smooths the in-room response nicely if the on-axis tonal balance runs a bit forward for your taste. Distortion and dynamics hold up well; this is a mature, well-regarded design (roughly a decade old at review time) that’s aged better than many contemporaries. Measured bass extension of 69Hz (-3dB), with a measured sensitivity of 87.8dB.
Cons: Still has a boosted upper mid-range/mid-range area, though less severe than the Prime: the reviewer suspects a baffle-step or tweeter-level issue rather than a resonance, giving mixes a slightly forward, occasionally tinny character. Bass extension is modest for the price (F3 69Hz, F10 48Hz measured): SVS is clearly counting on you pairing this with one of their subwoofers rather than expecting full-range performance from the bookshelf alone. Measured minimum impedance dips to about 3.8 ohms, so a 4-ohm-stable amplifier is recommended rather than a basic 8-ohm-only AVR. Radiation pattern is wide (around 80°), wider than the reviewer’s typical ~60° sweet spot preference, so acoustic treatment on nearby walls helps tame reflections and keep the off-axis response from diverging too much from on-axis. Discontinued; SVS replaced the Ultra line with the Ultra Evolution series.
Full SVS Ultra Bookshelf review and specifications →
| Bass Extension (-10dB) | 48Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 69Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 14.9”H x 8.5”W x 10”D |
| Drivers | 6.5” composite glass fiber cone woofer, 1” aluminum dome tweeter |
| Frequency Response | 45Hz - 32kHz (manufacturer specified) |
| Impedance | 8 ohms nominal, 3.8 ohms minimum (measured, Erin’s Audio Corner) |
| Recommended Power | 20-150W |
| Sensitivity | 87.8dB (measured average, Erin’s Audio Corner) |
| Spinorama Preference Score | 5.63 |
| Spinorama Preference Score with Perfect Sub | 8.10 |
| Weight | 19 lbs (8.6 kg) each |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- SVS Ultra Bookshelf vs Infinity Reference R162
- SVS Ultra Bookshelf vs Definitive Technology Demand D11
- SVS Ultra Bookshelf vs Yamaha NS-800A
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