Short answer: the Perlisten S4b for better sound quality, the MoFi SourcePoint 8 for the lower price. The Perlisten S4b ranks #2 of 222 bookshelf speakers, rated 4.8/5, at $8,000. The MoFi SourcePoint 8 ranks #17, rated 4.5/5, at $2,594, $5,406 cheaper.
The MoFi SourcePoint 8 is the deeper-bass choice. A bookshelf speaker with an 8 inch concentric driver, neutral sound, excellent imaging, and wide dispersion that forgives placement. Its bass reaches about 52Hz before falling 3dB, against 78Hz for the Perlisten S4b. Watch for: Like other coincident designs, produces diffraction dips around 4kHz and 7kHz when pointed directly on-axis; needs about 10-15° of toe-out to smooth those out.
What the Perlisten S4b does well: A compact sealed bookshelf speaker with reference grade accuracy, exceptionally smooth dispersion, and very low distortion at high volume. Watch for: 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 MoFi SourcePoint 8 when the price outweighs sound quality for you, and the Perlisten S4b when sound quality outweighs the price instead.
Want more options? Browse the full Passive Home rankings.
A bookshelf speaker with an 8 inch concentric driver, neutral sound, excellent imaging, and wide dispersion that forgives placement.
A compact sealed bookshelf speaker with reference grade accuracy, exceptionally smooth dispersion, and very low distortion at high volume.
Prices on this page were last checked October 31, 2026 at 7:11 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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Specifications Side By Side
| MoFi SourcePoint 8 | Perlisten S4b | |
|---|---|---|
| Price | $2594 per pair | $8,000 per pair |
| Ranked | #17 of 222 in Large Size Bookshelf Speakers | #2 of 222 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 43Hz (measured, Erin’s Audio Corner) | 40Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 52Hz (measured, Erin’s Audio Corner) | 78Hz (measured, Erin’s Audio Corner) |
| Dimensions | 18”H x 11.4”W x 13.2”D (457.2 x 289.6 x 335.3 mm) | 16.5”H x 9.4”W x 7.3”D |
| Impedance | 8 ohms nominal (8 ohms minimum above 80Hz, measured, Erin’s Audio Corner) | Just under 4 ohms minimum (measured, Erin’s Audio Corner) |
| Sensitivity | 86.3dB (measured, Erin’s Audio Corner) | 84.5dB/2.83V/1m (measured, Erin’s Audio Corner) |
| Drivers | 8” woofer, 1.25-inch soft-dome tweeter | DPC array with 28mm beryllium tweeter and dual 28mm midrange domes; 7” woofer |
| Weight | 28 lbs (12.7 kg) each | 24.3 lbs (11 kg) each |
| Woofer Cabinet | ported, rear | sealed |
| Spinorama Preference Score | 5.15 | 5.35 |
| Spinorama Preference Score with Perfect Sub | 7.28 | 8.01 |
| DIY Kit | No | No |
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