Sonus Faber Lumina II Amator vs Wharfedale Diamond 9.1

Last updated: August 18, 2026

Short answer: the Sonus Faber Lumina II Amator. It ranks #77 of 100 bookshelf speakers by sound quality; the Wharfedale Diamond 9.1 ranks #79.

The case for the Sonus Faber Lumina II Amator: Solid bass extension for a bookshelf (F3 63Hz, F10 43Hz), reaching about 50Hz in-room. The tradeoff: Very bright treble, running 3-6dB above the midrange depending on measurement angle - independently corroborated by other owners online, not just one reviewer’s opinion.

On the Wharfedale Diamond 9.1 side: The first design was a pretty good sounding speaker. Set against that: All current new ones sold today are the crap version.

Buy the Sonus Faber Lumina II Amator if sound quality matters more than the price. Buy the Wharfedale Diamond 9.1 if the price matters more than sound quality.

If sound quality matters at all to you, skip both of these and look higher up the 100 bookshelf speakers instead.

Sonus Faber Lumina II Amator vs Wharfedale Diamond 9.1

Specifications Side By Side

Sonus Faber Lumina II Amator Wharfedale Diamond 9.1
Price$2000Discontinued
Ranked#77 of 100 in Large Size Bookshelf Speakers#79 of 100 in Large Size Bookshelf Speakers
Bass Extension (-10dB)43Hz (measured, Erin’s Audio Corner)-
Bass Extension (-3dB)63Hz (measured, Erin’s Audio Corner)-
Impedance4 ohms nominal, 3.9 ohms minimum (measured, Erin’s Audio Corner)6 ohms
Sensitivity86.9dB (2.83V/1m, measured by Erin’s Audio Corner)87dB
Drivers1.14" DAD (Damped Apex Dome) tweeter, 5.9" paper cone woofer6.5" Kevlar cone woofer, 1" soft dome tweeter
Weight12.8 lbs / 5.8 kg12.1 lbs / 5.5 kg (good version), 9.9 lbs / 4.5 kg (bad version) each
Dimensions12" x 7.1" x 10.4" (304 x 180 x 263 mm)11.7"H x 7.6"W x 10.9"D (296.0 x 194.0 x 278.0 mm)
Frequency Response55Hz - 24kHz (Manufacturer specified)-
Crossover Frequency2600Hz-
Woofer CabinetBass reflex, portedported
Recommended Power30W - 150W-
Country of OriginItaly (Vicenza)-
Discontinued-Yes

More useful head-to-heads from the same speaker class:

The Two Speakers In Full

Sonus Faber Lumina II Amator: $2000 Crutchfield

Sonus Faber Lumina II Amator ranking card

Pros: Solid bass extension for a bookshelf (F3 63Hz, F10 43Hz), reaching about 50Hz in-room. Decent sensitivity and wide, consistent horizontal dispersion (~60-70 degrees) - better directivity than expected for a two-way design. Gorgeous, luxury-grade cabinet design.

Cons: Very bright treble, running 3-6dB above the midrange depending on measurement angle - independently corroborated by other owners online, not just one reviewer’s opinion. Causes audible sibilance and a forward, grainy character. Notably the brightest of three Sonus Faber models Erin’s Audio Corner has tested, even brighter than the brand’s own Sonetto II G2. A mechanical resonance/ringing artifact shows up around 1kHz in measurements. Needs a subwoofer for anything below about 50Hz.

Bass Extension (-10dB)43Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)63Hz (measured, Erin's Audio Corner)
Country of OriginItaly (Vicenza)
Crossover Frequency2600Hz
Dimensions12" x 7.1" x 10.4" (304 x 180 x 263 mm)
Drivers1.14" DAD (Damped Apex Dome) tweeter, 5.9" paper cone woofer
Frequency Response55Hz - 24kHz (Manufacturer specified)
Impedance4 ohms nominal, 3.9 ohms minimum (measured, Erin's Audio Corner)
Recommended Power30W - 150W
Sensitivity86.9dB (2.83V/1m, measured by Erin's Audio Corner)
Weight12.8 lbs / 5.8 kg
Woofer CabinetBass reflex, ported

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Wharfedale Diamond 9.1: Discontinued

Wharfedale Diamond 9.1 ranking card

Pros: The first design was a pretty good sounding speaker, the speaker was then outsourced to China and lost 1.5kg and was made with cheap parts and sounds much worse. Slightly rolled off in the treble by about 3dB

Cons: All current new ones sold today are the crap version. Discontinued.

Dimensions11.7"H x 7.6"W x 10.9"D (296.0 x 194.0 x 278.0 mm)
DiscontinuedYes
Drivers6.5" Kevlar cone woofer, 1" soft dome tweeter
Impedance6 ohms
Sensitivity87dB
Weight12.1 lbs / 5.5 kg (good version), 9.9 lbs / 4.5 kg (bad version) each
Woofer Cabinetported

As an eBay Partner, we may be compensated if you make a purchase.