Short answer: the Perlisten S4b. It ranks #2 of 222 bookshelf speakers by sound quality, rated 4.8/5, at $8,000. The Radiant Acoustics Clarity 6.2 ranks #28, rated 4.4/5, at $4,500, $3,500 cheaper, not enough of a saving to outweigh the sound-quality gap.
The Radiant Acoustics Clarity 6.2 is the more accurate, deeper-bass pick. A Purifi driver bookshelf speaker with an AMT tweeter, rigid cabinet, non-fatiguing sound, and precise, well focused imaging. Its measured preference score, a predictor of how neutral it sounds, is 5.97 against 5.35 for the Perlisten S4b. Its bass reaches about 55Hz before falling 3dB, against 78Hz for the Perlisten S4b. The catch: Needs a fairly specific setup to sound its best: about 15-20° of toe-out (per the manufacturer’s own recommendation) and roughly 2 feet from the rear wall; pointed straight on-axis, the treble reads as noticeably elevated.
The Perlisten S4b is the better-sounding option. A compact sealed bookshelf speaker with reference grade accuracy, exceptionally smooth dispersion, and very low distortion at high volume. The tradeoff: Erin measured only 84.5dB sensitivity and an impedance minimum just under 4 ohms, a difficult efficiency/load combination that deserves substantial clean amplification.
Buy the Perlisten S4b. It is rated higher for sound quality, and the $3,500 saving on the Radiant Acoustics Clarity 6.2 is not enough to make up the difference.
Want more options? Browse the full Passive Home rankings.
A Purifi driver bookshelf speaker with an AMT tweeter, rigid cabinet, non-fatiguing sound, and precise, well focused imaging.
A compact sealed bookshelf speaker with reference grade accuracy, exceptionally smooth dispersion, and very low distortion at high volume.
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Specifications Side By Side
| Radiant Acoustics Clarity 6.2 | Perlisten S4b | |
|---|---|---|
| Price | $4500 per pair | $8,000 per pair |
| Ranked | #28 of 222 in Large Size Bookshelf Speakers | #2 of 222 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 32Hz (measured, Erin’s Audio Corner) | 40Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 55Hz (measured, Erin’s Audio Corner) | 78Hz (measured, Erin’s Audio Corner) |
| Dimensions | 14.3”H x 8.7”W x 10.5”D (363.2 x 221 x 266.7 mm) | 16.5”H x 9.4”W x 7.3”D |
| Impedance | 4 ohms nominal (2.1 ohms minimum above 80Hz, measured, Erin’s Audio Corner) | Just under 4 ohms minimum (measured, Erin’s Audio Corner) |
| Sensitivity | 84.3dB (measured, Erin’s Audio Corner) | 84.5dB/2.83V/1m (measured, Erin’s Audio Corner) |
| Drivers | 6.5” PURIFI USHINDI woofer, Custom AMT (Air Motion Transformer) tweeter | DPC array with 28mm beryllium tweeter and dual 28mm midrange domes; 7” woofer |
| Weight | 23.8 lbs (10.8 kg) each | 24.3 lbs (11 kg) each |
| Woofer Cabinet | passive radiator | sealed |
| Spinorama Preference Score | 5.97 | 5.35 |
| Spinorama Preference Score with Perfect Sub | 7.75 | 8.01 |
| DIY Kit | No | No |
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