Wharfedale Diamond 220 vs Boston Acoustics A25

Last updated: October 1, 2026

Short answer: the Wharfedale Diamond 220 for a smoother on-axis response, the Boston Acoustics A25 for EQ-friendly directivity. The Diamond 220 measures smooth on axis once its grille is removed, a huge improvement over the stock grille’s comb filtering near 5kHz, but it rolls off below 200Hz and needs a subwoofer. The A25’s spinorama is decent once you ignore a 900Hz peak and a 3kHz dip caused by a port resonance and a fast-rolling tweeter.

Wharfedale Diamond 220 vs Boston Acoustics A25

Buy the Wharfedale Diamond 220 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, start with the Ascend Acoustics HTM-200SE2 instead.

Looking for alternatives? See the complete Passive Home rankings.

Specifications Side By Side

Wharfedale Diamond 220 Boston Acoustics A25
Price$299 per pair Discontinued$299.98 per pair Discontinued
Ranked#28 of 90 in Medium Size Bookshelf Speakers#34 of 90 in Medium Size Bookshelf Speakers
Drivers5” (130mm) woven Kevlar woofer, 1” (25mm) tweeter1” Kortec soft dome tweeter, 5.25” ceramic/glass-fiber polymer mid/woofer
Dimensions12.4”H x 6.9”W x 8.9”D (315 x 174 x 227 mm)10.7H x 7.25W x 8.9D in
Weight11.7 lbs (5.3 kg) each10.1 lbs (4.58 kg) each
Sensitivity86.9dB (2.83V/1m, measured, Audio Science Review; 86dB manufacturer specified)85dB (2.83V/1m, measured, Audio Science Review)
Impedance8 ohms8 ohms nominal
Woofer Cabinetported, bottom-firing into secondary enclosureported, rear
Bass Extension (-3dB)117.2Hz (measured, Audio Science Review)90Hz (measured, Audio Science Review)
Bass Extension (-10dB)58.0Hz (measured, Audio Science Review)55Hz (measured, Audio Science Review)
Spinorama Preference Score3.403.53
Spinorama Preference Score with Perfect Sub6.646.19
DIY KitNoNo
Frequency Response-55Hz - 25kHz (Manufacturer specified)
Power Handling-10-150W recommended

More worthwhile head-to-heads for Wharfedale Diamond 220:

Prices on this page were last checked October 2, 2026 at 10:18 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 220: $299 per pair Discontinued eBay

Wharfedale Diamond 220 ranking card

Newer model: the Wharfedale Diamond 12.1i. It’s likely to perform similarly, though we don’t have measurements to confirm that yet.

Pros: Amir found the on-axis response smooth once the grille is removed, calling grille removal “a huge improvement” since the stock grille caused unusually strong comb filtering around 5kHz. Good horizontal dispersion from the waveguide-loaded tweeter and controlled distortion. After some EQ (a room mode filter and treble shelf), the reviewer called it “a truly hifi speaker” where “every audiophile track..sounded very good,” and said he was “happy to recommend” it for the budget class. Measured bass extension of 117.2Hz (-3dB), with a measured sensitivity of 86.9dB.

Cons: Response rolls off below 200Hz, so a subwoofer is recommended for full-range use. Some port rattling was noted at high volumes, traced to vibration rather than the woofer itself. Best performance requires removing the grille and applying the reviewer’s EQ filters. Discontinued, with only limited remaining stock available direct from Wharfedale.

Bass Extension (-10dB)58.0Hz (measured, Audio Science Review)
Bass Extension (-3dB)117.2Hz (measured, Audio Science Review)
DIY KitNo
Dimensions12.4”H x 6.9”W x 8.9”D (315 x 174 x 227 mm)
Drivers5” (130mm) woven Kevlar woofer, 1” (25mm) tweeter
Impedance8 ohms
Sensitivity86.9dB (2.83V/1m, measured, Audio Science Review; 86dB manufacturer specified)
Spinorama Preference Score3.40
Spinorama Preference Score with Perfect Sub6.64
Weight11.7 lbs (5.3 kg) each
Woofer Cabinetported, bottom-firing into secondary enclosure

Boston Acoustics A25: $299.98 per pair Discontinued eBay

Boston Acoustics A25 ranking card

Pros: CEA2034 spinorama is decent once you ignore a peak around 900Hz and a dip around 3kHz: directivity is good enough that the response can be EQed and won’t be too room-dependent. Cabinet fit and finish is well above its price class, and dynamics were strong with no distortion audible even at high volume on well-recorded material. Discontinued, but the reviewer suggests hunting for clearance pricing on remaining stock. Measured bass extension of 90Hz (-3dB), with a measured sensitivity of 85dB.

Cons: A crazy port resonance and a tweeter with a steeper rolloff than the woofer both show up in the near-field driver measurements, creating the 900Hz peak and the crossover-region dip. The rear port itself measured audibly distorted up close, though it wasn’t noticeable from normal listening distance in the reviewer’s room. Discontinued.

Bass Extension (-10dB)55Hz (measured, Audio Science Review)
Bass Extension (-3dB)90Hz (measured, Audio Science Review)
DIY KitNo
Dimensions10.7H x 7.25W x 8.9D in
Drivers1” Kortec soft dome tweeter, 5.25” ceramic/glass-fiber polymer mid/woofer
Frequency Response55Hz - 25kHz (Manufacturer specified)
Impedance8 ohms nominal
Power Handling10-150W recommended
Sensitivity85dB (2.83V/1m, measured, Audio Science Review)
Spinorama Preference Score3.53
Spinorama Preference Score with Perfect Sub6.19
Weight10.1 lbs (4.58 kg) each
Woofer Cabinetported, rear