Short answer: the Ascend Sierra 1 v2 has been measured and ranked among bookshelf speakers; the Q Acoustics 3020c has not been independently measured yet, so until it is, this comes down to features and price.
The case for the Q Acoustics 3020c: Two-way bass reflex design with a 120mm (4.75”) Continuous Curved Cone woofer and a 22mm soft dome tweeter crossed over at 2.6kHz.
On the Ascend Sierra 1 v2 side: Formaldehyde-free layered bamboo ply cabinet with a 1” dome tweeter over a 5.25” midwoofer, mated by a 4th-order acoustic crossover rather than a stock textbook design.
On paper: The Q Acoustics 3020c is more sensitive, 87dB against 81.5dB, so it needs less amplifier power to play loud.
Price: the Q Acoustics 3020c lists at $639 and the Ascend Sierra 1 v2 at $1,000.
Buy the Ascend Sierra 1 v2 if you want a speaker whose sound quality has been measured and ranked.
Buy the Q Acoustics 3020c if you want higher sensitivity, and you can wait for measurements to confirm how it sounds.
Want more options? Browse the full Passive Home rankings.
Specifications Side By Side
| Q Acoustics 3020c | Ascend Sierra 1 v2 | |
|---|---|---|
| Price | $639.00 per pair | $1000 per pair |
| Ranked | - | #3 of 88 in Medium Size Bookshelf Speakers |
| Drivers | 120mm (4.75”) C3 cone woofer, 22mm soft dome tweeter | 5.25” proprietary mineral-filled polypropylene cone with cast aluminum frame woofer, 26mm aluminum/magnesium alloy dome tweeter with titanium former (SEAS Titan) |
| Frequency Response | 60Hz-30kHz, -6dB (manufacturer specified) | - |
| Sensitivity | 87dB (2.83V/1m, manufacturer specified) | 81.5dB (measured, Erin’s Audio Corner) |
| Impedance | 6 ohms nominal, 3.7 ohms minimum (manufacturer specified) | 8 ohms nominal, 7 ohms minimum (measured, Erin’s Audio Corner) |
| Recommended Power | 25-90W | - |
| Crossover Frequency | 2.6kHz | - |
| Woofer Cabinet | ported | ported |
| Dimensions | 279H x 175W x 281D mm | 14.2”H x 7.5”W x 10.5”D (361.9 x 190.5 x 266.7 mm) |
| Weight | 5.5 kg each | 18.5 lbs (8.4 kg) each |
| Cabinet Color | white, walnut, oak, black | - |
| Bass Extension (-10dB) | - | 39Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | - | 55Hz (measured, Erin’s Audio Corner) |
| Spinorama Preference Score | - | 6.65 |
| Spinorama Preference Score with Perfect Sub | - | 8.61 |
| DIY Kit | - | No |
Prices on this page were last checked September 29, 2026 at 3:43 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
Q Acoustics 3020c: $639.00 per pair Amazon eBay
Older model: the Q Acoustics 3020i (rated 2.4/5).
Pros: Two-way bass reflex design with a 120mm (4.75”) Continuous Curved Cone woofer and a 22mm soft dome tweeter crossed over at 2.6kHz. Q Acoustics rates sensitivity at 87dB, easy to drive from a 25W amplifier, and response at 60Hz to 30kHz (-6dB). Four finishes.
Cons: No independent measurements yet, so its tonal balance and directivity can’t be compared with ranked speakers. Minimum impedance drops to 3.7 ohms, and rated bass stops at 60Hz (-6dB), so plan on a subwoofer for full-range listening. It costs noticeably more than the 3020i it replaces.
Full Q Acoustics 3020c review and specifications →
| Cabinet Color | white, walnut, oak, black |
|---|---|
| Crossover Frequency | 2.6kHz |
| Dimensions | 279H x 175W x 281D mm |
| Drivers | 120mm (4.75”) C3 cone woofer, 22mm soft dome tweeter |
| Frequency Response | 60Hz-30kHz, -6dB (manufacturer specified) |
| Impedance | 6 ohms nominal, 3.7 ohms minimum (manufacturer specified) |
| Recommended Power | 25-90W |
| Sensitivity | 87dB (2.83V/1m, manufacturer specified) |
| Weight | 5.5 kg each |
| Woofer Cabinet | ported |
- Links
- Reviews, Comparisons and Sound Samples
- These figures are manufacturer-specified rather than independently measured.
- Head-to-Head Comparisons
Ascend Sierra 1 v2: $1000 per pair Ascend Acoustics eBay
Pros: Formaldehyde-free layered bamboo ply cabinet with a 1” dome tweeter over a 5.25” midwoofer, mated by a 4th-order acoustic crossover rather than a stock textbook design. In-room response is extremely linear (the reviewer called it “textbook”) a clear step up from the earlier V1, which had boxiness around 700Hz-1kHz and sibilance around 4-6kHz. Preference score of 8.4 with a subwoofer (6.8 without), which the reviewer calls topnotch. Wide, even horizontal radiation of about ±70° up to 6kHz. Better vertical directivity than its tweeter-to-woofer spacing would suggest, thanks to the steep 4th-order crossover slopes. No mechanical noise, port chuffing, or woofer bottoming even driven to 96dB/1m. In a three-way comparison against the Dynaudio Emit 20 and a Revel bookshelf model (all around $1,000/pair), measured as the most linear of the three and was the reviewer’s personal pick over both, despite the Dynaudio’s deeper bass and higher output capability. Independent ASR Klippel measurements corroborate Erin’s findings: superb off-axis response with only slight on-axis variations, and an in-room response the reviewer called “incredibly smooth and accurate. Amazing for a non-DSP speaker.” Distortion above 200Hz at 86dB/1m is very low for the class. Measured bass extension of 55Hz (-3dB), with a measured sensitivity of 81.5dB.
Cons: F3 of 55Hz and F10 of 39Hz mean in-room extension tops out in the mid-40s Hz; the reviewer still recommends a subwoofer for full-range material. Diffraction dips appear around 3kHz and 5-6kHz, and the 1” dome tweeter starts beaming above roughly 6.7kHz, narrowing the soundstage radiation in the top octave: a straightforward consequence of dome size rather than a design flaw. At 96dB/1m the 5.25” midwoofer shows increased distortion in the midrange, likely tied to motor topology; high-passing to a subwoofer around 80Hz largely clears it up. Moderate sensitivity (~81-82dB average) with a 7-ohm minimum impedance. ASR’s power-sweep testing found response holds steady up to 96dB SPL/1m, but pushing to 102dB causes midbass below 400Hz to sag with distortion “through the roof”: a harder output ceiling than the 96dB tests alone suggest. Vertical directivity also narrows above about 1kHz, so the reviewer recommends staying at tweeter-axis height for best results.
Full Ascend Sierra 1 v2 review and specifications →
| Bass Extension (-10dB) | 39Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 55Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 14.2”H x 7.5”W x 10.5”D (361.9 x 190.5 x 266.7 mm) |
| Drivers | 5.25” proprietary mineral-filled polypropylene cone with cast aluminum frame woofer, 26mm aluminum/magnesium alloy dome tweeter with titanium former (SEAS Titan) |
| Impedance | 8 ohms nominal, 7 ohms minimum (measured, Erin’s Audio Corner) |
| Sensitivity | 81.5dB (measured, Erin’s Audio Corner) |
| Spinorama Preference Score | 6.65 |
| Spinorama Preference Score with Perfect Sub | 8.61 |
| Weight | 18.5 lbs (8.4 kg) each |
| Woofer Cabinet | ported |
- Links
- Reviews, Comparisons and Sound Samples
- Erin’s Audio Corner: NEW! Ascend Acoustics Sierra-1 V2 Review More from Erin’s Audio Corner →
- Erin’s Audio Corner Website Ascend Sierra 1 v2
- Audio Science Review Ascend Sierra 1 v2 More from Audio Science Review →
- Erin’s Audio Corner: 5 AWESOME SPEAKERS Under $1000 You Won’t Regret
- Erin’s Audio Corner: I Tested 250 Speakers So You Don’t Have To!
- Erin’s Audio Corner: My Top Picks of 2023: Must-Haves Under $3000
- Manufacturer Measurements (spinorama.org)
- Head-to-Head Comparisons
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- See all 49 comparisons