Short answer: the JBL Stage A120 on price and ranking, though neither ranks well in its class. It places #69 of 90 against the KEF Q100’s #71 of 90 and costs $299 against $550. The Q100’s 5.25” Uni-Q coaxial driver keeps tweeter and woofer point-source aligned, but its spinorama shows a lift from 700Hz-1.5kHz and again from 5kHz up, plus a cancellation notch around 1.4kHz. The A120’s own response is “Batman”-shaped. Both are rated below 3.0/5 among the 90 bookshelf speakers, and the Ascend Acoustics HTM-200SE2, ranked #7 at $368, is a better place to start if sound quality matters.
Buy the JBL Stage A120 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 Ascend Acoustics HTM-200SE2 instead.
Want more options? Browse the full Passive Home rankings.
Specifications Side By Side
| JBL Stage A120 | KEF Q100 | |
|---|---|---|
| Price | $299 per pair Discontinued | $550 per pair Discontinued |
| Ranked | #69 of 90 in Medium Size Bookshelf Speakers | #71 of 90 in Medium Size Bookshelf Speakers |
| Drivers | 0.75” tweeter + 5” woofer | 5.25” Uni-Q aluminum coaxial driver, 1” aluminum dome tweeter |
| Weight | 10.6 lbs (4.8 kg) | 13 lbs (5.9 kg) each |
| Woofer Cabinet | ported | ported, rear |
| Sensitivity | 83dB (measured, Erin’s Audio Corner) | 85dB (2.83V/1m, measured, Audio Science Review) |
| Impedance | 6 ohms | 8 ohms nominal |
| Dimensions | 11.3”H x 6.8”W x 7.4”D (285.8 x 171.5 x 188.9 mm) | 11.8”H x 7.1”W x 10.7”D (300 x 180 x 272 mm) |
| Bass Extension (-3dB) | 71Hz (measured, Erin’s Audio Corner) | 85Hz (measured, Audio Science Review) |
| Bass Extension (-10dB) | 53Hz (measured, Erin’s Audio Corner) | 65Hz (measured, Audio Science Review) |
| Spinorama Preference Score | 3.50 | 4.96 (spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 6.24 | 7.24 (spinorama.org) |
| DIY Kit | No | No |
| Frequency Response | - | 49Hz - 40kHz (+/-3dB) (Manufacturer specified) |
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More worthwhile head-to-heads for JBL Stage A120:
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The Two Speakers In Full
JBL Stage A120: $299 per pair Discontinued eBay
Newer model: the JBL Stage 2 240B. It’s likely to perform similarly, though we don’t have measurements to confirm that yet.
Pros: Comes with a port bung, letting you experiment between ported and sealed configurations: the reviewer found the sound improved somewhat with the port sealed. Distortion at 96dB is broadly comparable to competitors in this price range outside of some elevated low-end THD. Wide horizontal radiation pattern for a compact bookshelf speaker in the low-to-midrange. Measured bass extension of 71Hz (-3dB), with a measured sensitivity of 83dB.
Cons: A pronounced “Batman”-shaped frequency response: boosted bass, a scooped midrange, and elevated treble (about 3-4dB above the midrange), driven partly by confirmed cabinet panel resonance around 800Hz-1.7kHz. Directivity shows significant back-to-back peaks and dips, making the speaker harder to correct with EQ since the off-axis sound doesn’t track the direct sound cleanly. Elevated treble that some might call “detailed” reads as an unwelcome boost to the reviewer rather than genuine resolution. Compression testing shows the low end degrading substantially at high output (102dB). Overall considered one of the weaker speakers the reviewer has tested in this class, with a competing model (Emotiva Airmotiv B1+) recommended instead at a similar price. Discontinued.
Full JBL Stage A120 review and specifications →
| Bass Extension (-10dB) | 53Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 71Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 11.3”H x 6.8”W x 7.4”D (285.8 x 171.5 x 188.9 mm) |
| Drivers | 0.75” tweeter + 5” woofer |
| Impedance | 6 ohms |
| Sensitivity | 83dB (measured, Erin’s Audio Corner) |
| Spinorama Preference Score | 3.50 |
| Spinorama Preference Score with Perfect Sub | 6.24 |
| Weight | 10.6 lbs (4.8 kg) |
| Woofer Cabinet | ported |
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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