Short answer: both are discontinued, so this only matters if you are buying used. Used, the Wharfedale Diamond 12.1 is the better pick: it ranks #32 of 160 bookshelf speakers by sound quality (rated 3.9/5), against #132 (rated 2.4/5) for the Q Acoustics 3020i. If you want one new, the Wharfedale Diamond 12.1i replaces the Wharfedale Diamond 12.1 and is rated 4.0/5 at $499.
The Wharfedale Diamond 12.1 is the more accurate, deeper-bass pick. A budget two-way bookshelf speaker (5” polypropylene woofer, 1” textile dome tweeter) that measures well for its price: harmonic distortion at 86dB stays under 1% THD down to about 60Hz, genuinely good for a 5” mid-woofer. Its measured preference score, a predictor of how neutral it sounds, is 5.01 against 3.86 for the Q Acoustics 3020i. Its bass reaches about 61Hz before falling 3dB, against 82Hz for the Q Acoustics 3020i. The catch: A dip of about 3dB in the 1-3kHz crossover region (on-axis, in the predicted in-room response, and even off-axis) gives the speaker a soft, “laid-back” character that noticeably saps attack and transient bite from drums, guitar and other percussive material: possibly an intentional BBC-style dip, but one the reviewer would still prefer tuned flat.
The case for the Q Acoustics 3020i: UK-designed (Finkteam) with attractive styling, including recessed binding posts and custom connectors. The tradeoff: On-axis response shows a rising upper-frequency trend and a dip in the 2-4kHz crossover region alongside two resonance-related dips; a significant resonance appears at 366Hz in the waterfall plot.
Buy the Wharfedale Diamond 12.1 only if you find one used in good condition; both are discontinued, and it is the better rated of the two. For a new speaker, buy the Wharfedale Diamond 12.1i, which replaces the Wharfedale Diamond 12.1.
Looking for alternatives? See the complete Passive Home rankings.
Specifications Side By Side
| Wharfedale Diamond 12.1 | Q Acoustics 3020i | |
|---|---|---|
| Price | $599 per pair Discontinued | $314.99 per pair Discontinued |
| Ranked | #32 of 160 in Medium Size Bookshelf Speakers | #132 of 160 in Medium Size Bookshelf Speakers |
| Bass Extension (-10dB) | 46Hz (measured, Erin’s Audio Corner) | 49.8Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 61Hz (measured, Erin’s Audio Corner) | 82.0Hz (measured, Audio Science Review) |
| Crossover Frequency | 2.6kHz | 2.4kHz |
| Dimensions | 12.2”H x 7”W x 10.9”D (310 x 178 x 277 mm) | 10.9”H x 6.7”W x 11.1”D (278 x 170 x 282 mm) |
| Impedance | 8 ohms nominal (3.9 ohms minimum above 80Hz, measured, Erin’s Audio Corner) | 6 ohms nominal, 4 ohms minimum |
| Sensitivity | 84dB (measured by Erin’s Audio Corner; 87dB manufacturer specified) | 86dB (2.83V/1m, manufacturer specified) |
| Drivers | 5” advanced polypropylene cone woofer, 1” textile dome tweeter | 125mm (5”) bass driver, 22mm (0.9”) tweeter |
| Weight | 15 lbs (6.8 kg) each | 10.6 lbs (4.8 kg) each |
| Woofer Cabinet | ported | ported, reflex |
| Spinorama Preference Score | 5.01 | 3.86 |
| Spinorama Preference Score with Perfect Sub | 7.42 | 6.38 |
| DIY Kit | No | No |
Related Speaker Comparisons
How Wharfedale Diamond 12.1 compares with other leading options:
- Audio First Fidelia vs Wharfedale Diamond 12.1
- Ascend Sierra 1 v2 vs Wharfedale Diamond 12.1
- KEF LS50 Meta vs Wharfedale Diamond 12.1
- Arendal 1961 Monitor vs Wharfedale Diamond 12.1
- Wharfedale Diamond 12.1 vs Moondrop M4P MTM
Prices on this page were last checked October 7, 2026 at 9:25 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.
As an eBay Partner, we may be compensated if you make a purchase.
The Two Speakers In Full
Wharfedale Diamond 12.1: $599 per pair Discontinued eBay
Newer model: the Wharfedale Diamond 12.1i, ranked higher, estimated 4/5.
Older model: the Wharfedale Diamond 9.1 (rated 2.8/5).
Same family: the Wharfedale Diamond 12.0 (smaller bookshelf, ranked lower, estimated 3.1/5), the Wharfedale Diamond 12.2 (larger bookshelf, estimated 4.1/5), the Wharfedale Diamond 12.3 (smaller floorstanding, estimated 3.9/5), the Wharfedale Diamond 12.4 (larger floorstanding, estimated 4.1/5), the Wharfedale Diamond 12.C (smaller center, estimated 3.5/5) and the Wharfedale Diamond 12.Ci (larger center, estimated 3.6/5).
Pros: A budget two-way bookshelf speaker (5” polypropylene woofer, 1” textile dome tweeter) that measures well for its price: harmonic distortion at 86dB stays under 1% THD down to about 60Hz, genuinely good for a 5” mid-woofer. Wide horizontal radiation of about ±60° up to roughly 5kHz before the tweeter starts to beam. Tonally smooth and easy to listen to at moderate volumes, with a pleasant, non-fatiguing character the reviewer said he’d happily recommend to someone who wants noticeably better fit, finish and looks than typical speakers in the $300-400 range. A high-pass crossover around 80Hz meaningfully cleans up midrange multitone distortion, so pairing it with a subwoofer helps more than usual for a speaker this size. Measured bass extension of 61Hz (-3dB), with a measured sensitivity of 84dB.
Cons: A dip of about 3dB in the 1-3kHz crossover region (on-axis, in the predicted in-room response, and even off-axis) gives the speaker a soft, “laid-back” character that noticeably saps attack and transient bite from drums, guitar and other percussive material: possibly an intentional BBC-style dip, but one the reviewer would still prefer tuned flat. Vertical directivity is unusually tight for this class of speaker, holding together only within about ±5° of the tweeter axis before a real hole opens up in the response, so seating height matters a lot more than on most bookshelf designs. Diffraction artifacts around 3kHz and 5kHz show up as differences between the listening-window and on-axis curves. Distortion climbs well past acceptable levels at higher output: harmonic distortion exceeds 3% around 150Hz at 96dB (versus under 1% at 86dB), multitone distortion tops 10% at 96dB/1m, and real compression sets in between 96-102dB (about 1.5dB of lost dynamic range around 300Hz at 102dB/1m, roughly equivalent to 92dB for a pair at 4m in a room). A genuine limitation on how loud or how far away this speaker can be pushed. Measured average sensitivity (84dB) runs a few dB below the 87dB spec. Only a 5” woofer, so a subwoofer is required for real bass. Discontinued.
Full Wharfedale Diamond 12.1 review and specifications →
| Bass Extension (-10dB) | 46Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 61Hz (measured, Erin’s Audio Corner) |
| Crossover Frequency | 2.6kHz |
| DIY Kit | No |
| Dimensions | 12.2”H x 7”W x 10.9”D (310 x 178 x 277 mm) |
| Drivers | 5” advanced polypropylene cone woofer, 1” textile dome tweeter |
| Impedance | 8 ohms nominal (3.9 ohms minimum above 80Hz, measured, Erin’s Audio Corner) |
| Sensitivity | 84dB (measured by Erin’s Audio Corner; 87dB manufacturer specified) |
| Spinorama Preference Score | 5.01 |
| Spinorama Preference Score with Perfect Sub | 7.42 |
| Weight | 15 lbs (6.8 kg) each |
| Woofer Cabinet | ported |
- Links
- Reviews, Comparisons and Sound Samples
- Erin’s Audio Corner: Wharfedale 12.1 Budget Bookshelf Speaker with “Laid Back” sound but output limited. More from Erin’s Audio Corner →
- Audio Science Review Wharfedale Diamond 12.1 More from Audio Science Review →
- Erin’s Audio Corner Website: Wharfedale Diamond 12.1
- Audio Science Review Measurements (spinorama.org)
- Head-to-Head Comparisons
- Wharfedale Diamond 12.1 vs Carmody S2000
- Wharfedale Diamond 12.1 vs Wharfedale Super Denton
- Wharfedale Diamond 12.1 vs Klipsch RP-500M II
- Wharfedale Diamond 12.1 vs Radiant Acoustics Clarity 4.2
- Wharfedale Diamond 12.1 vs Monitor Audio Silver 50 7G
- Wharfedale Diamond 12.1 vs KEF Q150
- Wharfedale Diamond 12.1 vs Revel M105
- Wharfedale Diamond 12.1 vs Moondrop M4P MTM
- See all 37 comparisons
Q Acoustics 3020i: $314.99 per pair Discontinued eBay
Newer model: the Q Acoustics 3020c, ranked higher, estimated 2.6/5.
Same family: the Q Acoustics 3030i (larger bookshelf, rated 4/5).
Pros: UK-designed (Finkteam) with attractive styling, including recessed binding posts and custom connectors. Vertical directivity is good enough that the tweeter doesn’t need to be exactly at ear level. With EQ correction, especially high-frequency shelving and a sub-40Hz high-pass filter, Amir found performance “improves substantially.”. Measured bass extension of 82.0Hz (-3dB).
Cons: On-axis response shows a rising upper-frequency trend and a dip in the 2-4kHz crossover region alongside two resonance-related dips; a significant resonance appears at 366Hz in the waterfall plot. Horizontal directivity is narrow and uneven due to a woofer/tweeter beamwidth mismatch. Amir cautions the speaker is “merely a distortion generator” if played too low, and its low impedance demands a quality amplifier. Without EQ, Amir “can’t recommend the Q Acoustics 3020i.”. Discontinued; Q Acoustics now sells the 3030i and 3010c in its place.
Full Q Acoustics 3020i review and specifications →
| Bass Extension (-10dB) | 49.8Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 82.0Hz (measured, Audio Science Review) |
| Crossover Frequency | 2.4kHz |
| DIY Kit | No |
| Dimensions | 10.9”H x 6.7”W x 11.1”D (278 x 170 x 282 mm) |
| Drivers | 125mm (5”) bass driver, 22mm (0.9”) tweeter |
| Impedance | 6 ohms nominal, 4 ohms minimum |
| Sensitivity | 86dB (2.83V/1m, manufacturer specified) |
| Spinorama Preference Score | 3.86 |
| Spinorama Preference Score with Perfect Sub | 6.38 |
| Weight | 10.6 lbs (4.8 kg) each |
| Woofer Cabinet | ported, reflex |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Q Acoustics 3020i vs KEF Q100
- Q Acoustics 3020i vs ELAC Uni-Fi 2.0 UB52
- Q Acoustics 3020i vs JBL Stage A120
- Q Acoustics 3020i vs Micca RB42
- Q Acoustics 3020i vs Q Acoustics 5020
- Q Acoustics 3020i vs JBL Stage A130
- Q Acoustics 3020i vs Fluance Signature HFS
- Q Acoustics 3020i vs JBL L52 Classic
- See all 35 comparisons