Short answer: the Radiant Acoustics Clarity 4.2 for better sound quality, the JBL Stage A130 for the lower price. The Radiant Acoustics Clarity 4.2 ranks #23 of 87 bookshelf speakers at $2998. The JBL Stage A130 ranks #75 at $399, $2599 cheaper.
What the JBL Stage A130 offers: More constant, better-behaved directivity than the smaller A120 once past the tweeter crossover point, giving a more consistent radiation pattern that likely explains some of its positive reception among other reviewers. Distortion at 96dB measures slightly better than a direct competitor (Emotiva Airmotiv B1+) in the low end, though slightly worse at high frequencies. The tweeter itself sounded decent to the reviewer, who considers it a reasonable value at its price point despite other reservations. Wide, well-filled horizontal radiation through the midrange. Watch for: Still shows the same underlying “Batman”-shaped response pattern as the A120: a bass bump, a midrange dip, a cabinet-resonance peak around 800Hz-1.7kHz (confirmed via accelerometer testing on the cabinet panels), and roughly a 5dB treble bump around 10kHz. Does not include a port bung, so sealed-cabinet listening requires DIY stuffing rather than a proper factory solution. The reviewer’s own measurements notably diverge from another well-known publication’s results on this same model, possibly reflecting a running production change, though this couldn’t be confirmed. Overall sound quality struck the reviewer as not a good-sounding speaker despite the more favorable measurements relative to the A120. Output-limited at extreme volumes (102dB), similar to its smaller sibling. Loses to the similarly-priced Emotiva Airmotiv B1+ in overall linearity and neutrality, according to the reviewer’s direct comparison.
What the Radiant Acoustics Clarity 4.2 offers: Compact bookshelf design using a 4” Purifi mid-woofer with matching Purifi passive radiators and an AMT tweeter on a purpose-designed waveguide, built with genuine heft - aluminum baffle, extensive internal bracing and damping. Surprisingly wide horizontal dispersion (about ±70° through the midrange and into the treble), more enveloping than its larger 6.2 sibling despite the smaller cabinet. More linear on-axis than the bigger Clarity 6.2, which needs 15-20° of toe-out to tame a rising treble; the 4.2 can be listened to closer to on-axis without that same correction. Wider-than-typical vertical dispersion (roughly +30°/-20°) for a two-way design, since its smaller woofer keeps the tweeter-to-woofer distance short. Genuinely deep bass extension for its size (F3 44Hz, reaching about 40Hz in-room), though it comes at a real cost to sensitivity. No resonance issues visible in impedance measurements. Watch for: Low sensitivity (rated 78dB, measured 78.5dB) is the trade-off for its bass extension - needs a fair amount of amplifier power, around 100W recommended for small-to-medium rooms versus the manufacturer’s own 60W baseline. Designed specifically for smaller rooms; the reviewer had to move testing out of his open-plan living room and into a smaller bedroom to avoid running into compression. A dip in the upper midrange gives a mild lack of attack and clarity, and a peak around 5kHz occasionally added a touch of extra sibilance. Multitone distortion crosses the reviewer’s 3% threshold at 96dB, making about 88dB a better average listening level; a slight upper-midrange bump persists even with an 80Hz high-pass filter applied. Dynamic range is limited: fine at 86dB, but the woofer starts giving up headroom by 96dB and drops off significantly by 102dB. Compared to its pricier sibling Clarity 6.2, has notably less dynamic range and higher multitone distortion, reflecting the smaller driver complement. A niche product size-wise - the reviewer couldn’t identify a clear direct competitor in the same size/price/SPL class.
Buy the JBL Stage A130 if the price matters more than sound quality. Buy the Radiant Acoustics Clarity 4.2 if sound quality matters more than the price.
If sound quality matters at all to you, skip the JBL Stage A130. It ranks near the bottom of the 87 bookshelf speakers, so look higher up the list instead.
Specifications Side By Side
| JBL Stage A130 | Radiant Acoustics Clarity 4.2 | |
|---|---|---|
| Price | $399 Discontinued | $2,998 |
| Ranked | #75 of 87 in Medium Size Bookshelf Speakers | #23 of 87 in Medium Size Bookshelf Speakers |
| Crossover Frequency | 3.2kHz | - |
| Dimensions | 12.6"H x 7.5"W x 9.1"D (321 x 190 x 230 mm) | 9.5"H x 6.3"W x 9.4"D (241 x 160 x 239 mm) |
| Impedance | 6 ohms nominal, about 4.3 ohms minimum (measured, Erin’s Audio Corner) | 4 ohms |
| Sensitivity | 85.2dB (measured, Erin’s Audio Corner) | 78 dB |
| Drivers | 5.25" (133mm) polycellulose woofer, 1" (25mm) aluminum dome tweeter | (2) 4" (102mm) woofer + AMT tweeter |
| Discontinued | Yes | - |
| Weight | 12 lbs / 5.45 kg each | 28.7 lbs / 13 kg (per pair: 57.3 lbs / 26 kg) |
| Woofer Cabinet | ported | passive radiator |
| Bass Extension (-3dB) | 66Hz (measured, Erin’s Audio Corner) | 44 Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 50Hz (measured, Erin’s Audio Corner) | 35 Hz (measured, Erin’s Audio Corner) |
| Frequency Response | - | 40 Hz - 25 kHz |
| Woofer | - | 4" (102mm) PURIFI USHINDI |
| Tweeter | - | AMT (Air Motion Transformer) |
| Amplifier Required | - | Yes |
| Recommended Power | - | 50-200W |
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The Two Speakers In Full
JBL Stage A130: $399 Discontinued eBay
Pros: More constant, better-behaved directivity than the smaller A120 once past the tweeter crossover point, giving a more consistent radiation pattern that likely explains some of its positive reception among other reviewers. Distortion at 96dB measures slightly better than a direct competitor (Emotiva Airmotiv B1+) in the low end, though slightly worse at high frequencies. The tweeter itself sounded decent to the reviewer, who considers it a reasonable value at its price point despite other reservations. Wide, well-filled horizontal radiation through the midrange.
Cons: Still shows the same underlying “Batman”-shaped response pattern as the A120: a bass bump, a midrange dip, a cabinet-resonance peak around 800Hz-1.7kHz (confirmed via accelerometer testing on the cabinet panels), and roughly a 5dB treble bump around 10kHz. Does not include a port bung, so sealed-cabinet listening requires DIY stuffing rather than a proper factory solution. The reviewer’s own measurements notably diverge from another well-known publication’s results on this same model, possibly reflecting a running production change, though this couldn’t be confirmed. Overall sound quality struck the reviewer as not a good-sounding speaker despite the more favorable measurements relative to the A120. Output-limited at extreme volumes (102dB), similar to its smaller sibling. Loses to the similarly-priced Emotiva Airmotiv B1+ in overall linearity and neutrality, according to the reviewer’s direct comparison. Discontinued.
Full JBL Stage A130 review and specifications →
| Bass Extension (-10dB) | 50Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 66Hz (measured, Erin's Audio Corner) |
| Crossover Frequency | 3.2kHz |
| Dimensions | 12.6"H x 7.5"W x 9.1"D (321 x 190 x 230 mm) |
| Discontinued | Yes |
| Drivers | 5.25" (133mm) polycellulose woofer, 1" (25mm) aluminum dome tweeter |
| Impedance | 6 ohms nominal, about 4.3 ohms minimum (measured, Erin's Audio Corner) |
| Sensitivity | 85.2dB (measured, Erin's Audio Corner) |
| Weight | 12 lbs / 5.45 kg each |
| Woofer Cabinet | ported |
- Links
- Reviews, Comparisons and Sound Samples
- Audio Science Review JBL Stage A130 More from Audio Science Review →
- Erin’s Audio Corner: Bright & Boomy or Neutral? JBL Stage A120/A130 vs Emotiva B1+ More from Erin’s Audio Corner →
- Erin’s Audio Corner Website JBL Stage A130
- Erin’s Audio Corner Measurements (spinorama.org)
- Reddit Search for JBL Stage A130 Review
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Radiant Acoustics Clarity 4.2: $2,998 Radiant Acoustics eBay
Pros: Compact bookshelf design using a 4” Purifi mid-woofer with matching Purifi passive radiators and an AMT tweeter on a purpose-designed waveguide, built with genuine heft - aluminum baffle, extensive internal bracing and damping. Surprisingly wide horizontal dispersion (about ±70° through the midrange and into the treble), more enveloping than its larger 6.2 sibling despite the smaller cabinet. More linear on-axis than the bigger Clarity 6.2, which needs 15-20° of toe-out to tame a rising treble; the 4.2 can be listened to closer to on-axis without that same correction. Wider-than-typical vertical dispersion (roughly +30°/-20°) for a two-way design, since its smaller woofer keeps the tweeter-to-woofer distance short. Genuinely deep bass extension for its size (F3 44Hz, reaching about 40Hz in-room), though it comes at a real cost to sensitivity. No resonance issues visible in impedance measurements.
Cons: Low sensitivity (rated 78dB, measured 78.5dB) is the trade-off for its bass extension - needs a fair amount of amplifier power, around 100W recommended for small-to-medium rooms versus the manufacturer’s own 60W baseline. Designed specifically for smaller rooms; the reviewer had to move testing out of his open-plan living room and into a smaller bedroom to avoid running into compression. A dip in the upper midrange gives a mild lack of attack and clarity, and a peak around 5kHz occasionally added a touch of extra sibilance. Multitone distortion crosses the reviewer’s 3% threshold at 96dB, making about 88dB a better average listening level; a slight upper-midrange bump persists even with an 80Hz high-pass filter applied. Dynamic range is limited: fine at 86dB, but the woofer starts giving up headroom by 96dB and drops off significantly by 102dB. Compared to its pricier sibling Clarity 6.2, has notably less dynamic range and higher multitone distortion, reflecting the smaller driver complement. A niche product size-wise - the reviewer couldn’t identify a clear direct competitor in the same size/price/SPL class.
Full Radiant Acoustics Clarity 4.2 review and specifications →
| Amplifier Required | Yes |
|---|---|
| Bass Extension (-10dB) | 35 Hz (measured, Erin's Audio Corner) |
| Bass Extension (-3dB) | 44 Hz (measured, Erin's Audio Corner) |
| Dimensions | 9.5"H x 6.3"W x 9.4"D (241 x 160 x 239 mm) |
| Drivers | (2) 4" (102mm) woofer + AMT tweeter |
| Frequency Response | 40 Hz - 25 kHz |
| Impedance | 4 ohms |
| Recommended Power | 50-200W |
| Sensitivity | 78 dB |
| Tweeter | AMT (Air Motion Transformer) |
| Weight | 28.7 lbs / 13 kg (per pair: 57.3 lbs / 26 kg) |
| Woofer | 4" (102mm) PURIFI USHINDI |
| Woofer Cabinet | passive radiator |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Radiant Acoustics Clarity 4.2 vs Wharfedale Diamond 12.1
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