Short answer: the Dynaudio Heritage Special on measured sound quality, the Ascend Acoustics Sierra-2EX V2 on price. The Dynaudio Heritage Special ranks #29 of 222 bookshelf speakers, rated 4.4/5, at $7,000. The Ascend Acoustics Sierra-2EX V2 ranks #41, rated 4.3/5, at $1,748, $5,252 cheaper.
The Ascend Acoustics Sierra-2EX V2 is the more accurate pick. A ribbon tweeter bookshelf speaker with hand matched pairs, a frequency response printout for each unit, and a long seven year warranty. Its measured preference score, a predictor of how neutral it sounds, is 5.88 against 4.32 for the Dynaudio Heritage Special. Watch for: On-axis response is relatively uneven, with an average deviation of about 0.45dB, so a listener sitting dead center may notice more unevenness than with smoother AsciLab or Ascend towers.
The Dynaudio Heritage Special is the deeper-bass option. A limited edition bookshelf speaker with huge output for its size, robust bass, and a big, well proportioned soundstage. Its bass reaches about 52Hz before falling 3dB, against 58.6Hz for the Ascend Acoustics Sierra-2EX V2. The catch: At lower listening volumes, dynamic range and kick-drum punch fell short of higher-sensitivity speakers the reviewer has tested (JBL 4367, KEF Reference 1 Meta): the sheer output ceiling is impressive, but it isn’t a highly dynamic-sounding speaker at modest levels.
Buy the Ascend Acoustics Sierra-2EX V2 if the price matters more than sound quality. Buy the Dynaudio Heritage Special if sound quality matters more than the price.
Looking for alternatives? See the complete Passive Home rankings.
A ribbon tweeter bookshelf speaker with hand matched pairs, a frequency response printout for each unit, and a long seven year warranty.
A limited edition bookshelf speaker with huge output for its size, robust bass, and a big, well proportioned soundstage.
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
| Ascend Acoustics Sierra-2EX V2 | Dynaudio Heritage Special | |
|---|---|---|
| Price | $1,748 per pair | $7,000 per pair |
| Ranked | #41 of 222 in Large Size Bookshelf Speakers | #29 of 222 in Large Size Bookshelf Speakers |
| Enclosure | ported | - |
| Drivers | RAAL 10mm true ribbon tweeter, 6” SEAS Excel Curv cone woofer | 18cm MSP cone woofer, 28mm Esotar 3 dome tweeter |
| Dimensions | 14.3”H x 7.5”W x 10.5”D (362 x 190 x 267 mm) | 15.2”H x 8.2”W x 12.6”D (385 x 208 x 320 mm) |
| Weight | 20.1 lbs (9.1 kg) each | 24.3 lbs (11 kg) each |
| Sensitivity | 85dB @ 2.83V/1m anechoic (manufacturer) | 85dB (measured at 2.83V/1m, Erin’s Audio Corner) |
| Impedance | 8 ohms nominal | 5.1 ohms minimum, ported mode (measured, Erin’s Audio Corner) |
| Power Handling | 150W continuous, 300W peak | - |
| Frequency Response | 51-27,000Hz +/-3dB (manufacturer) | - |
| Bass Extension (-6dB) | 51.3Hz (measured, spinorama.org vendor data) | - |
| Bass Extension (-3dB) | 58.6Hz (measured, spinorama.org vendor data) | 52Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 42.4Hz (measured, spinorama.org vendor data) | 38Hz (measured, Erin’s Audio Corner) |
| Warranty | 7 years parts and labor | - |
| Country | United States | Denmark |
| Spinorama Preference Score | 5.88 | 4.32 |
| Spinorama Preference Score with Perfect Sub | 7.95 | 6.33 |
| DIY Kit | No | No |
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