Short answer: the Wharfedale Aura 2. It ranks #13 of 222 bookshelf speakers by sound quality, rated 4.6/5, at $2,799. The Ascend Acoustics Sierra-2EX V2 ranks #41, rated 4.3/5, at $1,748, $1,051 cheaper, not enough of a saving to outweigh the sound-quality gap.
The case for the Wharfedale Aura 2: A mini tower style bookshelf speaker with nearly flat response, huge clean output, wide sound, and bass that reaches deep in most rooms. Watch for: A breakup/peak around 13kHz can sound sharp or shrill depending on the track, the main tonal flaw noted.
The case for the Ascend Acoustics Sierra-2EX V2: A ribbon tweeter bookshelf speaker with hand matched pairs, a frequency response printout for each unit, and a long seven year warranty. The catch: 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.
Buy the Wharfedale Aura 2. It is rated higher for sound quality, and the $1,051 you would save on the Ascend Acoustics Sierra-2EX V2 does not close the gap.
Want more options? Browse the full Passive Home rankings.
A mini tower style bookshelf speaker with nearly flat response, huge clean output, wide sound, and bass that reaches deep in most rooms.
A ribbon tweeter bookshelf speaker with hand matched pairs, a frequency response printout for each unit, and a long seven year warranty.
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
| Wharfedale Aura 2 | Ascend Acoustics Sierra-2EX V2 | |
|---|---|---|
| Price | $2799 per pair | $1,748 per pair |
| Ranked | #13 of 222 in Large Size Bookshelf Speakers | #41 of 222 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 30Hz (measured, Erin’s Audio Corner) | 42.4Hz (measured, spinorama.org vendor data) |
| Bass Extension (-3dB) | 56Hz (measured, Erin’s Audio Corner) | 58.6Hz (measured, spinorama.org vendor data) |
| Dimensions | 22.1”H x 11.3”W x 15.3”D (561.3 x 287 x 388.6 mm) | 14.3”H x 7.5”W x 10.5”D (362 x 190 x 267 mm) |
| Impedance | 6 ohms nominal (3.1 ohms minimum above 80Hz, measured, Erin’s Audio Corner) | 8 ohms nominal |
| Drivers | 6.5” Black Glass Fibre Matrix Cone woofer, 4” Black Glass Fibre Matrix Cone midrange, 27x90mm AMT tweeter | RAAL 10mm true ribbon tweeter, 6” SEAS Excel Curv cone woofer |
| Sensitivity | 87dB (measured, Erin’s Audio Corner) | 85dB @ 2.83V/1m anechoic (manufacturer) |
| Weight | 45 lbs (20.4 kg) each | 20.1 lbs (9.1 kg) each |
| Woofer Cabinet | ported, rear | - |
| Spinorama Preference Score | 6.03 | 5.88 |
| Spinorama Preference Score with Perfect Sub | 7.65 | 7.95 |
| DIY Kit | No | No |
| Enclosure | - | ported |
| Power Handling | - | 150W continuous, 300W peak |
| Frequency Response | - | 51-27,000Hz +/-3dB (manufacturer) |
| Bass Extension (-6dB) | - | 51.3Hz (measured, spinorama.org vendor data) |
| Warranty | - | 7 years parts and labor |
| Country | - | United States |
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