Short answer: the AsciLab C6B. It ranks #6 of 216 bookshelf speakers by sound quality, rated 4.7/5, at $1,145; the Perlisten A3m ranks #52, rated 4.2/5, and costs $3,000, so there is not much of a tradeoff to weigh.
The AsciLab C6B is the more accurate, deeper-bass pick. Two-way design pairing a 1” aluminum ceramic dome tweeter on a large waveguide with a 6” aluminum ceramic cone woofer, crossed over at 1.1kHz, plus a rear passive radiator. Its measured preference score, a predictor of how neutral it sounds, is 6.33 against 4.30 for the Perlisten A3m. Its bass reaches about 54Hz before falling 3dB, against 85.8Hz for the Perlisten A3m. The catch: Bass rolls off around 50Hz in-room (F3 54Hz, F10 35Hz), so a subwoofer is needed for real extension below that.
Why pick the Perlisten A3m: Manufacturer data shows a narrow 1.8dB reference band, 0.305dB on-axis average absolute deviation, 0.457 listening-window smoothness, and a rated 111.4dB peak at 1m. Watch for: The low-quality vendor Spinorama data measures only 85.8Hz at -3dB, 74.1Hz at -6dB, and 55.7Hz at -12dB, conflicting with Perlisten’s much deeper in-room extension claim.
Buy the AsciLab C6B. It is rated higher for sound quality than the Perlisten A3m and costs less, which makes it the one to get unless you need something the other one does better.
Looking for alternatives? See the complete Passive Home rankings.
Specifications Side By Side
| AsciLab C6B | Perlisten A3m | |
|---|---|---|
| Price | $1145 per pair | $3,000 per pair |
| Ranked | #6 of 216 in Large Size Bookshelf Speakers | #52 of 216 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 35Hz (measured, Erin’s Audio Corner) | approximately 61Hz (measured, spinorama.org) |
| Bass Extension (-3dB) | 54Hz (measured, Erin’s Audio Corner) | 85.8Hz (measured, spinorama.org) |
| Dimensions | 15.7”H x 8”W x 10.4”D (398.8 x 203.2 x 264.2 mm) | 26.6 x 11.0 x 13.8 in each |
| Impedance | 4 ohms nominal, 2.6 ohms minimum (measured, Erin’s Audio Corner) | 4 ohms nominal; 3 ohms minimum |
| Sensitivity | 85.6dB (measured, Erin’s Audio Corner) | 87.4dB at 2.83V/1m |
| Drivers | 6” Aluminium Ceramic Cone with cast Aluminium Chassis woofer, 1” Aluminium Ceramic Dome tweeter | Two 8-inch carbon-fiber woofers; 35mm Teteron dome tweeter |
| Weight | 18.5 lbs (8.4 kg) each | 63.9 lbs (29 kg) |
| Woofer Cabinet | passive radiator | - |
| Spinorama Preference Score | 6.33 | 4.30 |
| Spinorama Preference Score with Perfect Sub | 8.28 | 7.34 |
| DIY Kit | No | No |
| Enclosure | - | Sealed |
| Maximum SPL | - | 111.4dB peak at 1m (manufacturer specified) |
Frequency Response Compared
Both speakers’ spinorama measurements, overlaid. A flatter line is more neutral: peaks sound forward or harsh, dips sound recessed. Each curve is shifted so its average from 300 Hz to 3 kHz sits at 0 dB, so loudness differences between the two are removed and only the shape is compared. The two were measured by different sources, so small differences, especially in the bass, can come from the measurement setup rather than the speakers.
Measurement data: AsciLab C6B (measured by Erin’s Audio Corner) and Perlisten A3m (measured by the manufacturer), via spinorama.org.
Related Speaker Comparisons
How AsciLab C6B compares with other leading options:
- AsciLab C6B vs Perlisten S4b
- AsciLab C6B vs KEF Reference 1 Meta
- AsciLab C6B vs GR-Research NX-Studio
- AsciLab C6B vs March Audio Sointuva AWG
- AsciLab C6B vs Audio First Cadentia 3
Prices on this page were last checked October 14, 2026 at 2:38 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
AsciLab C6B: $1145 per pair Ascilab $1145 eBay
Same family: the AsciLab C5B (smaller bookshelf, rated 4.2/5).
Pros: Two-way design pairing a 1” aluminum ceramic dome tweeter on a large waveguide with a 6” aluminum ceramic cone woofer, crossed over at 1.1kHz, plus a rear passive radiator. Unusual trait: horizontal radiation actually widens at higher frequencies instead of narrowing like most two-way designs, which keeps image focus and soundstage depth consistent whether you toe the speakers in or out (5-10° off-axis was the sweet spot in testing). Vertical radiation also stays wide straight through the 2kHz crossover region, so the sound doesn’t collapse when standing up: unusual at this price. CA2034 measurements show strong on-axis linearity, listening window, early reflections, and directivity. Midrange and tweeter distortion stay very low even at 96dB, holding up against a $5,900 Arendal speaker in that regard despite roughly a 5x price gap. At $1145 shipped to the US, the reviewer calls it the best-value bookshelf speaker he’s tested, rivaling speakers 2-5x the price. Measured bass extension of 54Hz (-3dB), with a measured sensitivity of 85.6dB.
Cons: Bass rolls off around 50Hz in-room (F3 54Hz, F10 35Hz), so a subwoofer is needed for real extension below that. Low-frequency harmonic distortion increases substantially at 96dB versus 86dB, though it’s second-order and less audible than it looks on paper. Minimum impedance dips to 2.6 ohms (EPDR as low as 1.2 ohms), so it wants an amplifier comfortable driving 4-ohm loads, ideally 100W or more. At 102dB, compression noticeably eats into midrange, bass, and some treble output. Shipping to the US adds roughly $200 on top of AsciLab’s list price. Against the reviewer’s reference Audiofirst Fidelia at a similar price, has slightly less lower-midrange body (about 1dB difference) and a smaller perceived soundstage size.
Full AsciLab C6B review and specifications →
| Bass Extension (-10dB) | 35Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 54Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 15.7”H x 8”W x 10.4”D (398.8 x 203.2 x 264.2 mm) |
| Drivers | 6” Aluminium Ceramic Cone with cast Aluminium Chassis woofer, 1” Aluminium Ceramic Dome tweeter |
| Impedance | 4 ohms nominal, 2.6 ohms minimum (measured, Erin’s Audio Corner) |
| Sensitivity | 85.6dB (measured, Erin’s Audio Corner) |
| Spinorama Preference Score | 6.33 |
| Spinorama Preference Score with Perfect Sub | 8.28 |
| Weight | 18.5 lbs (8.4 kg) each |
| Woofer Cabinet | passive radiator |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Perlisten A3m: $3,000 per pair Perlisten $3,000 eBay
Same family: the Perlisten A3t (smaller floorstanding, estimated 4.2/5), the Perlisten A4t (larger floorstanding, estimated 4.3/5) and the Perlisten A2s (surround, estimated 4/5).
Pros: Manufacturer data shows a narrow 1.8dB reference band, 0.305dB on-axis average absolute deviation, 0.457 listening-window smoothness, and a rated 111.4dB peak at 1m. Its preference score rises from 4.30 to 7.34 with a subwoofer. A sealed cabinet, two 8-inch carbon-fiber woofers, and a controlled tweeter waveguide make this a high-output monitor. Measured bass extension of 85.8Hz (-3dB).
Cons: The low-quality vendor Spinorama data measures only 85.8Hz at -3dB, 74.1Hz at -6dB, and 55.7Hz at -12dB, conflicting with Perlisten’s much deeper in-room extension claim. A 3.70 sound-power directivity-index standard deviation and 0.295 predicted-in-room smoothness are merely average. It is large, heavy, 4-ohm nominal, and expensive at $3000/pair.
Full Perlisten A3m review and specifications →
| Released | Sep 2025 (1 year ago) |
|---|---|
| Bass Extension (-10dB) | approximately 61Hz (measured, spinorama.org) |
| Bass Extension (-3dB) | 85.8Hz (measured, spinorama.org) |
| DIY Kit | No |
| Dimensions | 26.6 x 11.0 x 13.8 in each |
| Drivers | Two 8-inch carbon-fiber woofers; 35mm Teteron dome tweeter |
| Enclosure | Sealed |
| Impedance | 4 ohms nominal; 3 ohms minimum |
| Maximum SPL | 111.4dB peak at 1m (manufacturer specified) |
| Sensitivity | 87.4dB at 2.83V/1m |
| Spinorama Preference Score | 4.30 |
| Spinorama Preference Score with Perfect Sub | 7.34 |
| Weight | 63.9 lbs (29 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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