Short answer: the Sonus Faber Lumina II. It ranks #94 of 134 bookshelf speakers by sound quality (rated 3.4/5) at $1,600 and is still sold new; the KEF Q350 ranks #109 (rated 3.0/5) and is discontinued, so it is only an option used.
Buy the Sonus Faber Lumina II. It is rated higher for sound quality, and the KEF Q350 is discontinued, so it is only available used.
Still deciding? The full Passive Home rankings cover every ranked option.
Specifications Side By Side
| Sonus Faber Lumina II | KEF Q350 | |
|---|---|---|
| Price | $1,600 per pair | $699.00 per pair Discontinued |
| Ranked | #94 of 134 in Large Size Bookshelf Speakers | #109 of 134 in Large Size Bookshelf Speakers |
| Drivers | 29mm DAD dome tweeter, 150mm paper cone mid-woofer | 25mm tweeter + 165mm woofer |
| Crossover Frequency | 1800Hz | - |
| Dimensions | 12” x 7.1” x 10.4” (304 x 180 x 263 mm) | 14.1”H x 8.3”W x 12”D (358.0 x 210.0 x 306.0 mm) |
| Weight | 12.5 lbs (5.65 kg) each | 29.5 lbs (13.4 kg) |
| Impedance | 4 ohms nominal, 4.1 ohms minimum (measured, Erin’s Audio Corner) | 4 ohms |
| Sensitivity | 86dB (measured average, Erin’s Audio Corner; matches manufacturer spec) | 86dB (measured, Audio Science Review) |
| Bass Extension (-3dB) | 60Hz (measured, Erin’s Audio Corner) | 70Hz (measured, Audio Science Review) |
| Bass Extension (-10dB) | 41Hz (measured, Erin’s Audio Corner) | 38Hz (measured, Audio Science Review) |
| Frequency Response | 55Hz - 24kHz (manufacturer specified) | - |
| Recommended Power | 30W - 150W | - |
| Spinorama Preference Score | 3.81 | 5.25 (spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 6.10 | 7.12 (spinorama.org) |
| DIY Kit | No | No |
| Woofer Cabinet | - | ported, rear |
Related Speaker Comparisons
More worthwhile head-to-heads for Sonus Faber Lumina II:
- Sonus Faber Lumina II vs Perlisten S4b
- KEF Reference 1 Meta vs Sonus Faber Lumina II
- Sonus Faber Lumina II vs GR-Research NX-Studio
- Sonus Faber Lumina II vs AsciLab C6B
- Audio First Cadentia 3 vs Sonus Faber Lumina II
Prices on this page were last checked October 3, 2026 at 10:26 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
Sonus Faber Lumina II: $1,600 per pair Crutchfield eBay
Pros: Handmade in Italy with a gloss-finished front baffle and black leather-wrapped cabinet: genuinely nice-looking speaker with real brand cachet. Bass extension is competitive for the size, reaching about 50 Hz in-room with mild compression and good distortion figures, so higher output levels and greater listening distances aren’t a problem down to that point. About 20 dB of dynamic range at typical listening levels (73 dB at 4m), which comfortably covers most music without the tonal balance shifting as instruments and vocals peak. Off-axis behavior is consistent: toeing the speakers 20-30 degrees out doesn’t meaningfully change the in-room high-frequency character, so placement flexibility is good once you’ve dialed in the tonal balance. Measured bass extension of 60Hz (-3dB), with a measured sensitivity of 86dB.
Cons: Not a neutral speaker: has a persistent high-frequency boost/lift that makes it sound forward and bright, present whether pointed directly at the listener or toed out. A slightly nasal quality traced to a resonance around 1 kHz that EQ can address. The reviewer needed to trim treble by about 4 dB on his preamp to get the tonal balance he wanted, meaning most listeners will want equalization available to fully enjoy this speaker. At roughly the same $1,000ish price point, alternatives like the Ascend Acoustics Sierra 1 V2 measure more linear (with a tradeoff in distortion and crossover-region directivity), and the Dynaudio Emit 20 offers deeper bass extension and lower compression at the cost of a more deliberately colored tonal signature.
Full Sonus Faber Lumina II review and specifications →
| Bass Extension (-10dB) | 41Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 60Hz (measured, Erin’s Audio Corner) |
| Crossover Frequency | 1800Hz |
| DIY Kit | No |
| Dimensions | 12” x 7.1” x 10.4” (304 x 180 x 263 mm) |
| Drivers | 29mm DAD dome tweeter, 150mm paper cone mid-woofer |
| Frequency Response | 55Hz - 24kHz (manufacturer specified) |
| Impedance | 4 ohms nominal, 4.1 ohms minimum (measured, Erin’s Audio Corner) |
| Recommended Power | 30W - 150W |
| Sensitivity | 86dB (measured average, Erin’s Audio Corner; matches manufacturer spec) |
| Spinorama Preference Score | 3.81 |
| Spinorama Preference Score with Perfect Sub | 6.10 |
| Weight | 12.5 lbs (5.65 kg) each |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Sonus Faber Lumina II vs Polk Monitor XT20
- Sonus Faber Lumina II vs XTZ Spirit 4
- Sonus Faber Lumina II vs KEF Q3 Meta
- Sonus Faber Lumina II vs Polk Reserve R100
- Sonus Faber Lumina II vs Focal Aria 906
- Sonus Faber Lumina II vs Revel Performa M22
- Sonus Faber Lumina II vs SVS Prime Bookshelf
- Sonus Faber Lumina II vs ELAC Debut 2.0 B6.2
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KEF Q350: $699.00 per pair Discontinued Amazon eBay
Newer model: the KEF Q3 Meta, ranked higher, rated 3.4/5.
Pros: CEA2034 spinorama shows a reasonably flat on-axis response with excellent directivity, aided by the coaxial Uni-Q driver. Vertical directivity is better than most non-coaxial two-way speakers, another benefit of the concentric design. Measured bass extension of 70Hz (-3dB), with a measured sensitivity of 86dB.
Cons: Two resonances at 700Hz and 1.2kHz show up on-axis, alongside an upper-bass boost. Predicted in-room response looks a bit boomy as a result. Distortion climbs substantially in the 100Hz-1kHz range at 96dB SPL/1m, with a distinct resonance-driven peak around 900Hz-1kHz at both test levels. Discontinued.
Full KEF Q350 review and specifications →
| Bass Extension (-10dB) | 38Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 70Hz (measured, Audio Science Review) |
| DIY Kit | No |
| Dimensions | 14.1”H x 8.3”W x 12”D (358.0 x 210.0 x 306.0 mm) |
| Drivers | 25mm tweeter + 165mm woofer |
| Impedance | 4 ohms |
| Sensitivity | 86dB (measured, Audio Science Review) |
| Spinorama Preference Score | 5.25 (spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 7.12 (spinorama.org) |
| Weight | 29.5 lbs (13.4 kg) |
| Woofer Cabinet | ported, rear |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons