Short answer: the Klipsch RP-600M for value, the Sonus Faber Lumina II Amator for bass depth. The RP-600M costs $1,622.01 less and holds more linear horizontal dispersion, sitting at #111 against the Sonus Faber’s #110. The Lumina II Amator reaches lower, with F3 at 63Hz and F10 at 43Hz, but runs 3-6dB bright in the treble, while the Klipsch has an audible resonance around 300Hz that can be EQ’d out.
Buy the Sonus Faber Lumina II Amator. It is rated higher for sound quality, and the Klipsch RP-600M is discontinued, so it is only available used.
Want more options? Browse the full Passive Home rankings.
Specifications Side By Side
| Sonus Faber Lumina II Amator | Klipsch RP-600M | |
|---|---|---|
| Price | $2000 per pair | $377.99 per pair Discontinued |
| Ranked | #110 of 134 in Large Size Bookshelf Speakers | #111 of 134 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 43Hz (measured, Erin’s Audio Corner) | 40Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 63Hz (measured, Erin’s Audio Corner) | 73Hz (measured, Erin’s Audio Corner) |
| Impedance | 4 ohms nominal, 3.9 ohms minimum (measured, Erin’s Audio Corner) | 8 ohms nominal, 3.5 ohms minimum (measured, Erin’s Audio Corner) |
| Sensitivity | 86.9dB (2.83V/1m, measured by Erin’s Audio Corner) | 85.2dB (measured, Erin’s Audio Corner) |
| Drivers | 1.14” DAD (Damped Apex Dome) tweeter, 5.9” paper cone woofer | 6.5” Cerametallic cone woofer, 1” titanium LTS vented tweeter with Tractrix horn |
| Weight | 12.8 lbs (5.8 kg) | 16.1 lbs (7.3 kg) each |
| Dimensions | 12” x 7.1” x 10.4” (304 x 180 x 263 mm) | 15.7”H x 8”W x 11.9”D (398.8 x 203.2 x 302.3 mm) |
| Frequency Response | 55Hz - 24kHz (Manufacturer specified) | - |
| Crossover Frequency | 2600Hz | - |
| Woofer Cabinet | Bass reflex, ported | ported |
| Recommended Power | 30W - 150W | - |
| Country | Italy (Vicenza) | - |
| DIY Kit | No | No |
| Spinorama Preference Score | - | 3.66 |
| Spinorama Preference Score with Perfect Sub | - | 5.61 |
Related Speaker Comparisons
More worthwhile head-to-heads for Sonus Faber Lumina II Amator:
- Sonus Faber Lumina II Amator vs Perlisten S4b
- KEF Reference 1 Meta vs Sonus Faber Lumina II Amator
- GR-Research NX-Studio vs Sonus Faber Lumina II Amator
- AsciLab C6B vs Sonus Faber Lumina II Amator
- Audio First Cadentia 3 vs Sonus Faber Lumina II Amator
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
Sonus Faber Lumina II Amator: $2000 per pair Crutchfield eBay
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. Measured bass extension of 63Hz (-3dB), with a measured sensitivity of 86.9dB.
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.
Full Sonus Faber Lumina II Amator review and specifications →
| Bass Extension (-10dB) | 43Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 63Hz (measured, Erin’s Audio Corner) |
| Country | Italy (Vicenza) |
| Crossover Frequency | 2600Hz |
| DIY Kit | No |
| Dimensions | 12” x 7.1” x 10.4” (304 x 180 x 263 mm) |
| Drivers | 1.14” DAD (Damped Apex Dome) tweeter, 5.9” paper cone woofer |
| Frequency Response | 55Hz - 24kHz (Manufacturer specified) |
| Impedance | 4 ohms nominal, 3.9 ohms minimum (measured, Erin’s Audio Corner) |
| Recommended Power | 30W - 150W |
| Sensitivity | 86.9dB (2.83V/1m, measured by Erin’s Audio Corner) |
| Weight | 12.8 lbs (5.8 kg) |
| Woofer Cabinet | Bass reflex, ported |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Sonus Faber Lumina II Amator vs KEF Q350
- Sonus Faber Lumina II Amator vs Pylon Jasper Monitor 18
- Sonus Faber Lumina II Amator vs Wharfedale Diamond 9.1
- Sonus Faber Lumina II Amator vs Triangle Borea BR03
- Sonus Faber Lumina II Amator vs Emotiva Airmotiv B2+
- Sonus Faber Lumina II Amator vs Sonus Faber Sonetto II G2
- Sonus Faber Lumina II Amator vs B&W 805S
- Sonus Faber Lumina II Amator vs JBL XPL-90
- See all 57 comparisons
Klipsch RP-600M: $377.99 per pair Discontinued Amazon eBay
Newer model: the Klipsch RP-600M II, ranked higher, rated 3.7/5.
Pros: More linear horizontal dispersion than the updated RP-600M II: as you move side-to-side, the tonal character changes less, a genuine advantage for off-axis listening consistency. Takes exceptionally well to EQ correction (miniDSP or similar), letting a knowledgeable owner fix its tonal shortcomings without needing to upgrade. Standard 6.5” woofer/horn-tweeter two-way design with reasonably gradual bass rolloff (F3 ~70Hz, F10 ~40Hz) rather than a steep vented-enclosure cutoff. Measured bass extension of 73Hz (-3dB), with a measured sensitivity of 85.2dB.
Cons: A strong, annoying resonance in the lower vocal range around 300Hz stands out clearly (though it can be EQ’d out). Overall tonal balance is notably less neutral than the newer RP-600M II, with a roughly 3-4dB suckout in the estimated in-room response. The waveguide doesn’t extend flush to the baffle edge, increasing diffraction compared to the redesigned version. Klipsch’s marketed sensitivity spec (about 96dB) is a half-space, in-room-style rating roughly 9dB above the true anechoic figure (closer to 85-86dB), which can mislead buyers comparing spec sheets. Elevated treble on-axis, similar to its successor, benefits from toe-out or careful placement. Vertical listening tolerance is limited to about ±10° from the tweeter axis. Still needs a subwoofer for real bass weight; a boost around 120Hz gives kick drums their “tambour” without the underlying “meat.”. Discontinued.
Full Klipsch RP-600M review and specifications →
| Bass Extension (-10dB) | 40Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 73Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 15.7”H x 8”W x 11.9”D (398.8 x 203.2 x 302.3 mm) |
| Drivers | 6.5” Cerametallic cone woofer, 1” titanium LTS vented tweeter with Tractrix horn |
| Impedance | 8 ohms nominal, 3.5 ohms minimum (measured, Erin’s Audio Corner) |
| Sensitivity | 85.2dB (measured, Erin’s Audio Corner) |
| Spinorama Preference Score | 3.66 |
| Spinorama Preference Score with Perfect Sub | 5.61 |
| Weight | 16.1 lbs (7.3 kg) each |
| Woofer Cabinet | ported |
- Links
- Reviews, Comparisons and Sound Samples
- Erin’s Audio Corner: The Truth about Klipsch’s “NEW” Sound. RP-600M Update. More from Erin’s Audio Corner →
- Erin’s Audio Corner Website Klipsch RP-600M
- GR-Research: We Bought The "NEW" RP-600M II Is KLIPSCH Listening?! More from GR-Research →
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
- Head-to-Head Comparisons
- Klipsch RP-600M vs Wharfedale Diamond 9.1
- Klipsch RP-600M vs Triangle Borea BR03
- Klipsch RP-600M vs KEF Q350
- Klipsch RP-600M vs B&W 805S
- Klipsch RP-600M vs Emotiva Airmotiv B2+
- Klipsch RP-600M vs Sonus Faber Sonetto II G2
- Klipsch RP-600M vs Aperion Audio Verus V8B
- Klipsch RP-600M vs JBL XPL-90
- See all 30 comparisons