Short answer: the JBL Stage 250B. It ranks #52 of 88 bookshelf speakers by sound quality, rated 3.2/5, at $439.95; the KEF Q100 ranks #69, rated 2.4/5, and costs $550, so there is little reason to consider the other one.
The case for the JBL Stage 250B: Good local Spinorama scores of 4.06 raw and 6.60 with a subwoofer, with smooth horizontal directivity from JBL’s next-generation HDI waveguide. The tradeoff: Its objective score is good rather than class-leading, and the rear port needs some wall clearance.
The case for the KEF Q100: 5.25” Uni-Q coaxial driver keeps the tweeter and woofer point-source aligned for consistent imaging. Watch for: CEA2034 spinorama shows broad, audible deviations from flat rather than narrow peaks: a lift from 700Hz-1.5kHz and again from 5kHz up, plus a cancellation notch around 1.4kHz from port/cabinet interaction.
One note: the KEF Q100 is discontinued and no longer widely available new.
Buy the JBL Stage 250B. It is rated higher for sound quality than the KEF Q100 and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Looking for alternatives? See the complete Passive Home rankings.
Specifications Side By Side
| JBL Stage 250B | KEF Q100 | |
|---|---|---|
| Price | $439.95 per pair | $550 per pair Discontinued |
| Ranked | #52 of 88 in Medium Size Bookshelf Speakers | #69 of 88 in Medium Size Bookshelf Speakers |
| Enclosure | Passive 2-way rear-ported | - |
| Drivers | 1-inch aluminum tweeter, 5.25-inch polycellulose woofer | 5.25” Uni-Q aluminum coaxial driver, 1” aluminum dome tweeter |
| Frequency Response | 50Hz-25kHz (-6dB) | 49Hz - 40kHz (+/-3dB) (Manufacturer specified) |
| Sensitivity | 86dB/2.83V/1m | 85dB (2.83V/1m, measured, Audio Science Review) |
| Impedance | 6 ohms | 8 ohms nominal |
| Recommended Power | 20-150W | - |
| Dimensions | 12.6H x 7.9W x 9.5D in | 11.8”H x 7.1”W x 10.7”D (300 x 180 x 272 mm) |
| Weight | 12.3 lbs (5.6 kg) each | 13 lbs (5.9 kg) each |
| Spinorama Preference Score | 4.06 | 4.96 (spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 6.60 | 7.24 (spinorama.org) |
| Bass Extension (-3dB) | 64.5Hz (measured, Erin’s Audio Corner via spinorama.org) | 85Hz (measured, Audio Science Review) |
| DIY Kit | No | No |
| Bass Extension (-10dB) | 50Hz (measured, Erin’s Audio Corner) | 65Hz (measured, Audio Science Review) |
| Power Handling | 75W RMS | - |
| Woofer Cabinet | ported, rear | ported, rear |
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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.
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The Two Speakers In Full
JBL Stage 250B: $439.95 per pair Amazon JBL eBay
Older model: the JBL Stage A130 (ranked lower, rated 2.1/5).
Pros: Good local Spinorama scores of 4.06 raw and 6.60 with a subwoofer, with smooth horizontal directivity from JBL’s next-generation HDI waveguide. The current Stage 2 model offers solid build details, magnetic grilles and useful 56Hz measured extension at an accessible price. Measured bass extension of 64.5Hz (-3dB).
Cons: Its objective score is good rather than class-leading, and the rear port needs some wall clearance. At 86dB sensitivity and six-ohm nominal impedance it is not especially easy to drive, while the compact woofer limits deep-bass output.
Full JBL Stage 250B review and specifications →
| Bass Extension (-10dB) | 50Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 64.5Hz (measured, Erin’s Audio Corner via spinorama.org) |
| DIY Kit | No |
| Dimensions | 12.6H x 7.9W x 9.5D in |
| Drivers | 1-inch aluminum tweeter, 5.25-inch polycellulose woofer |
| Enclosure | Passive 2-way rear-ported |
| Frequency Response | 50Hz-25kHz (-6dB) |
| Impedance | 6 ohms |
| Power Handling | 75W RMS |
| Recommended Power | 20-150W |
| Sensitivity | 86dB/2.83V/1m |
| Spinorama Preference Score | 4.06 |
| Spinorama Preference Score with Perfect Sub | 6.60 |
| Weight | 12.3 lbs (5.6 kg) each |
| Woofer Cabinet | ported, rear |
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KEF Q100: $550 per pair Discontinued eBay
Newer model: the KEF Q1 Meta, ranked higher, rated 3.6/5.
Pros: 5.25” Uni-Q coaxial driver keeps the tweeter and woofer point-source aligned for consistent imaging. 86dB sensitivity is reasonably easy to drive. Measured bass extension of 85Hz (-3dB), with a measured sensitivity of 85dB.
Cons: CEA2034 spinorama shows broad, audible deviations from flat rather than narrow peaks: a lift from 700Hz-1.5kHz and again from 5kHz up, plus a cancellation notch around 1.4kHz from port/cabinet interaction. Bass sensitivity drops to about 80dB and impedance falls below 4 ohms in the bass, demanding a capable amplifier. The reviewer heard boomy, buzzing bass that improved somewhat with the port plugged, and could not recommend it, calling the famous reputation more about looks than sound. Discontinued.
Full KEF Q100 review and specifications →
| Bass Extension (-10dB) | 65Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 85Hz (measured, Audio Science Review) |
| DIY Kit | No |
| Dimensions | 11.8”H x 7.1”W x 10.7”D (300 x 180 x 272 mm) |
| Drivers | 5.25” Uni-Q aluminum coaxial driver, 1” aluminum dome tweeter |
| Frequency Response | 49Hz - 40kHz (+/-3dB) (Manufacturer specified) |
| Impedance | 8 ohms nominal |
| Sensitivity | 85dB (2.83V/1m, measured, Audio Science Review) |
| Spinorama Preference Score | 4.96 (spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 7.24 (spinorama.org) |
| Weight | 13 lbs (5.9 kg) each |
| Woofer Cabinet | ported, rear |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons