Short answer: the Buchardt Audio E50 for better sound quality, the Ascend Acoustics Sierra-2EX V2 for the lower price. The Buchardt Audio E50 ranks #16 of 222 bookshelf speakers, rated 4.5/5, at $4,600. The Ascend Acoustics Sierra-2EX V2 ranks #41, rated 4.3/5, at $1,748, $2,852 cheaper.
What the Ascend Acoustics Sierra-2EX V2 does well: 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.
The Buchardt Audio E50 is the deeper-bass choice. A bookshelf speaker with remarkably deep bass for its size, a very neutral midrange, and low distortion, with no need to sit near a wall. Its bass reaches about 40Hz before falling 3dB, against 58.6Hz for the Ascend Acoustics Sierra-2EX V2. The tradeoff: A roughly 3dB dip in the upper midrange/lower treble softens attack and dialogue clarity: the reviewer’s main complaint, and it’s baked into the crossover rather than a directivity artifact, so it’s audible both on and off axis.
Buy the Ascend Acoustics Sierra-2EX V2 when the price outweighs sound quality for you, and the Buchardt Audio E50 when sound quality outweighs the price instead.
Still deciding? The full Passive Home rankings cover every ranked option.
A ribbon tweeter bookshelf speaker with hand matched pairs, a frequency response printout for each unit, and a long seven year warranty.
A bookshelf speaker with remarkably deep bass for its size, a very neutral midrange, and low distortion, with no need to sit near a wall.
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 | Buchardt Audio E50 | |
|---|---|---|
| Price | $1,748 per pair | $4600 per pair |
| Ranked | #41 of 222 in Large Size Bookshelf Speakers | #16 of 222 in Large Size Bookshelf Speakers |
| Enclosure | ported | - |
| Drivers | RAAL 10mm true ribbon tweeter, 6” SEAS Excel Curv cone woofer | 1” Scanspeak dome tweeter with waveguide, 6.5” Purifi extended-stroke woofer, dual 6.5” passive radiators |
| Dimensions | 14.3”H x 7.5”W x 10.5”D (362 x 190 x 267 mm) | 15.6” x 7.5” x 11.2” (395 x 190 x 284 mm) |
| Weight | 20.1 lbs (9.1 kg) each | 19 lbs (8.6 kg) each |
| Sensitivity | 85dB @ 2.83V/1m anechoic (manufacturer) | 83.1dB (2.83V/1m, measured by Erin’s Audio Corner) |
| Impedance | 8 ohms nominal | 4 ohms nominal |
| Power Handling | 150W continuous, 300W peak | - |
| Frequency Response | 51-27,000Hz +/-3dB (manufacturer) | 36Hz - 30kHz ±3dB (Manufacturer specified) |
| Bass Extension (-6dB) | 51.3Hz (measured, spinorama.org vendor data) | - |
| Bass Extension (-3dB) | 58.6Hz (measured, spinorama.org vendor data) | 40Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 42.4Hz (measured, spinorama.org vendor data) | 34Hz (measured, Erin’s Audio Corner) |
| Warranty | 7 years parts and labor | - |
| Country | United States | Denmark |
| Spinorama Preference Score | 5.88 | 5.84 |
| Spinorama Preference Score with Perfect Sub | 7.95 | 7.61 |
| DIY Kit | No | No |
| Woofer Cabinet | - | Passive radiator loaded |
| Crossover Frequency | - | 2000Hz |
| Recommended Power | - | 60W - 200W |
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