Sonus Faber Lumina II Amator vs Triangle Borea BR03

Last updated: August 18, 2026

Short answer: the Sonus Faber Lumina II Amator for better sound quality, the Triangle Borea BR03 for the lower price. The Sonus Faber Lumina II Amator ranks #77 of 100 bookshelf speakers at $2000. The Triangle Borea BR03 ranks #80 at $381.77, $1618.23 cheaper.

On the Sonus Faber Lumina II Amator side: Solid bass extension for a bookshelf (F3 63Hz, F10 43Hz), reaching about 50Hz in-room. Set against that: 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.

What the Triangle Borea BR03 offers: Bass output is genuinely decent for the price - measured extension reaches F3 57Hz/F10 42Hz, which the reviewer had no real complaints about. Watch for: A noticeable mid-range suckout, most pronounced in the upper mid-range/lower treble.

Buy the Sonus Faber Lumina II Amator if sound quality matters more than the price. Buy the Triangle Borea BR03 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 Triangle Borea BR03

Specifications Side By Side

Sonus Faber Lumina II Amator Triangle Borea BR03
Price$2000$381.77
Ranked#77 of 100 in Large Size Bookshelf Speakers#80 of 100 in Large Size Bookshelf Speakers
Bass Extension (-10dB)43Hz (measured, Erin’s Audio Corner)42Hz (measured, Erin’s Audio Corner)
Bass Extension (-3dB)63Hz (measured, Erin’s Audio Corner)57Hz (measured, Erin’s Audio Corner)
Impedance4 ohms nominal, 3.9 ohms minimum (measured, Erin’s Audio Corner)8 ohms nominal (manufacturer spec), 4.2 ohms minimum (measured, Erin’s Audio Corner)
Sensitivity86.9dB (2.83V/1m, measured by Erin’s Audio Corner)87.5dB (measured at 2.83V/1m, Erin’s Audio Corner)
Drivers1.14" DAD (Damped Apex Dome) tweeter, 5.9" paper cone woofer6.5" natural cellulose midwoofer, 1" (25mm) EFS silk dome tweeter
Weight12.8 lbs / 5.8 kg13.22 lbs each
Dimensions12" x 7.1" x 10.4" (304 x 180 x 263 mm)14.96"H x 8.11"W x 12.36"D
Frequency Response55Hz - 24kHz (Manufacturer specified)-
Crossover Frequency2600Hz-
Woofer CabinetBass reflex, portedported, dual front ports
Recommended Power30W - 150W100W
Country of OriginItaly (Vicenza)-
High-Pass Filter-3600Hz

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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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Triangle Borea BR03: $381.77 Amazon

Triangle Borea BR03 ranking card

Pros: Bass output is genuinely decent for the price - measured extension reaches F3 57Hz/F10 42Hz, which the reviewer had no real complaints about. Dual front-firing ports and a well-stuffed, well-braced cabinet. Solid build quality overall.

Cons: A noticeable mid-range suckout, most pronounced in the upper mid-range/lower treble, that the reviewer attributes to cabinet resonances and driver breakup rather than a deliberate voicing choice - it makes vocals and instruments sound recessed and thin rather than warm. Sibilance in the 4-8kHz region shows up on every track the reviewer tried. Measured minimum impedance dips to about 4.2 ohms (with an even lower EPDR), despite the speaker and its own rear panel being labeled 8 ohms - worth knowing if you’re planning to drive these with a receiver/AVR that assumes an 8-ohm nominal load. The reviewer is upfront that this speaker has a devoted following among other reviewers, but says he specifically doesn’t hear what they hear and wants people who own it to trust their own ears rather than assume something’s wrong with their hearing if they don’t love it either.

Bass Extension (-10dB)42Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)57Hz (measured, Erin's Audio Corner)
Dimensions14.96"H x 8.11"W x 12.36"D
Drivers6.5" natural cellulose midwoofer, 1" (25mm) EFS silk dome tweeter
High-Pass Filter3600Hz
Impedance8 ohms nominal (manufacturer spec), 4.2 ohms minimum (measured, Erin's Audio Corner)
Recommended Power100W
Sensitivity87.5dB (measured at 2.83V/1m, Erin's Audio Corner)
Weight13.22 lbs each
Woofer Cabinetported, dual front ports

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