Short answer: the KEF Q350 for directivity, the Focal Aria 906 for flatter measured bass. The Q350’s coaxial Uni-Q driver helps deliver a reasonably flat on-axis response with excellent directivity, but two resonances at 700Hz and 1.2kHz show up on-axis alongside an upper-bass boost. The Aria 906 counters with very flat bass, an almost perfect predicted in-room response below 1kHz, a 3dB dip around 2.8kHz, and some resonance around 800Hz.
Buy the Focal Aria 906 only if you find one used in good condition; both are discontinued, and it is the better rated of the two. For a new speaker, start with the AsciLab C6B instead.
Still deciding? The full Passive Home rankings cover every ranked option.
Specifications Side By Side
| Focal Aria 906 | KEF Q350 | |
|---|---|---|
| Price | $2,199.00 per pair used, Discontinued | $699.00 per pair Discontinued |
| Ranked | #97 of 134 in Large Size Bookshelf Speakers | #109 of 134 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 47Hz (measured, Erin’s Audio Corner) | 38Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 63Hz (measured, Erin’s Audio Corner) | 70Hz (measured, Audio Science Review) |
| Impedance | 4 ohms nominal (4.8 ohms minimum above 80Hz, measured by Erin’s Audio Corner) | 4 ohms |
| Sensitivity | 86.5dB (measured average, Erin’s Audio Corner) | 86dB (measured, Audio Science Review) |
| Drivers | 26mm tweeter + 165mm mid-woofer | 25mm tweeter + 165mm woofer |
| Weight | 39.9 lbs (18.1 kg) | 29.5 lbs (13.4 kg) |
| Dimensions | 15.4”H x 8.9”W x 11”D (390.0 x 225.0 x 280.0 mm) | 14.1”H x 8.3”W x 12”D (358.0 x 210.0 x 306.0 mm) |
| Woofer Cabinet | ported, front | ported, rear |
| Spinorama Preference Score | 4.64 | 5.25 (spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 7.00 | 7.12 (spinorama.org) |
| DIY Kit | No | No |
Related Speaker Comparisons
How Focal Aria 906 compares with other leading options:
- Focal Aria 906 vs AsciLab C6B
- KEF R3 Meta vs Focal Aria 906
- KEF Q Concerto Meta vs Focal Aria 906
- Focal Aria 906 vs KEF R3
- MoFi SourcePoint 8 vs Focal Aria 906
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
Focal Aria 906: $2,199.00 per pair used Discontinued Amazon eBay
Newer model: the Focal Aria Evo X N°1. It’s likely to perform similarly, though we don’t have measurements to confirm that yet.
Pros: CEA2034 spinorama shows very flat bass response, with the reviewer rating overall performance “good.” Predicted in-room response is almost perfect prior to 1kHz. Horizontal dispersion of about ±60 degrees is good and stays even out to about -12dB before getting erratic. Woofer distortion is quite low at 86dB SPL/1m. Measured bass extension of 63Hz (-3dB), with a measured sensitivity of 86.5dB.
Cons: 3dB dip around 2.8kHz. Some resonance around 800Hz, small directivity error around 7kHz. A dip in the upper midrange also shows up in the predicted in-room response. Distortion becomes problematic at 96dB SPL/1m, with a notable peak around 1.3-1.5kHz alongside broader midrange elevation. Discontinued.
Full Focal Aria 906 review and specifications →
| Bass Extension (-10dB) | 47Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 63Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 15.4”H x 8.9”W x 11”D (390.0 x 225.0 x 280.0 mm) |
| Drivers | 26mm tweeter + 165mm mid-woofer |
| Impedance | 4 ohms nominal (4.8 ohms minimum above 80Hz, measured by Erin’s Audio Corner) |
| Sensitivity | 86.5dB (measured average, Erin’s Audio Corner) |
| Spinorama Preference Score | 4.64 |
| Spinorama Preference Score with Perfect Sub | 7.00 |
| Weight | 39.9 lbs (18.1 kg) |
| Woofer Cabinet | ported, front |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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