Short answer: the MoFi SourcePoint V10 Master Edition. It ranks #3 of 71 floorstanding speakers by sound quality at $7995; the Radiant Acoustics Clarity 66 ranks #5 and costs $7998, so there is not much of a tradeoff to weigh.
What the Radiant Acoustics Clarity 66 offers: ASR’s revised Spinorama measurement shows bass reaching 32.2Hz at -3dB and 27.8Hz at -6dB, giving substantial low-end weight without a subwoofer. The response spans 2.3dB from 300Hz to 5kHz, with preference scores of 5.10 standalone and 6.12 with an ideal subwoofer. The review’s exceptionally low bass distortion at ordinary levels complements that extension, while dual 6.5-inch Purifi woofers provide a strong foundation for full-range listening. Watch for: Vertical directivity is narrow and horizontal coverage is uneven, so listening height and placement affect tonal balance. Treble resonances and response irregularities keep it from reference-level neutrality. Spinorama’s modeled EQ improves the scores to 6.09 standalone and 6.99 with an ideal subwoofer, but those are corrected results, not stock performance. Measured sensitivity is 85.9dB at 2.83V/1m with a nominal 4-ohm load; use an amplifier comfortable driving 4 ohms. Distortion rises at very high playback levels.
What the MoFi SourcePoint V10 Master Edition offers: Extended bass to approximately 30 Hz in-room without subwoofer; images with excellent precision indicating tight frequency response matching between speakers. Integrated bass management with three-way treble attenuation switches for room tuning. New design from Andrew Jones represents reviewer personal second choice (behind only KEF Blade 2 Meta at 29k) among hundreds of systems auditioned; ranks above Dutch & Dutch 8C, JBL 4367, and JBL M2. Watch for: Moderate sensitivity (~89 dB) means amplifier power requirements higher than many alternatives. Deep bass extension ends above subsonic frequencies (pipe organ territory below 17 Hz requires subwoofer).
Buy the MoFi SourcePoint V10 Master Edition. It ranks higher for sound quality than the Radiant Acoustics Clarity 66 and costs less, so there is no real case for the other one.
Still deciding? The full Passive Home rankings cover every ranked option.
Specifications Side By Side
| Radiant Acoustics Clarity 66 | MoFi SourcePoint V10 Master Edition | |
|---|---|---|
| Price | $7,998 per pair | $7995 per pair |
| Ranked | #5 of 71 in Large Size Floorstanding Speakers | #3 of 71 in Large Size Floorstanding Speakers |
| Bass Extension (-3dB) | 32.2Hz (measured, Audio Science Review) | 38Hz (measured, Erin's Audio Corner) |
| Bass Extension (-10dB) | 24.4Hz (measured, Audio Science Review) | 25Hz (measured, Erin's Audio Corner) |
| Sensitivity | 85.9dB (2.83V/1m, measured, Audio Science Review; 86dB manufacturer specified) | 88.8dB (measured, Erin's Audio Corner) |
| Drivers | Custom waveguide-loaded tweeter with beam-expansion fins, 2x 6.5" Purifi USHINDI aluminum-cone woofers | 10" woofer, 10" paper‑cone concentric midrange, 1.25" soft‑dome concentric tweeter |
| Dimensions | 40.4"H x 8.7"W x 14"D (1025 x 222 x 355 mm) | 48.8"H x 15.5"W x 19.9"D (1239.5 x 393.7 x 505.5 mm) |
| Weight | 101.4 lbs (46 kg) each | 160.9 lbs (73 kg) |
| Impedance | 4 ohms nominal | 6 ohms nominal, 5.3 ohms minimum (measured, Erin's Audio Corner) |
| Crossover Frequency | 2.4kHz | - |
| Woofer Cabinet | ported, large rear port | passive radiator |
| Spinorama Preference Score | 5.10 | 4.09 |
| Spinorama Preference Score with Perfect Sub | 6.12 | 5.40 |
Related Speaker Comparisons
How MoFi SourcePoint V10 Master Edition compares with other leading options:
- GR-Research NX-Treme vs MoFi SourcePoint V10 Master Edition
- KEF Blade Two Meta vs MoFi SourcePoint V10 Master Edition
- MoFi SourcePoint 888 vs MoFi SourcePoint V10 Master Edition
- MoFi SourcePoint V10 Master Edition vs Ascend Acoustics ELX Ribbon Tower
- JBL HDI-3800 vs MoFi SourcePoint V10 Master Edition
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The Two Speakers In Full
Radiant Acoustics Clarity 66: $7,998 per pair Radiant Acoustics eBay
Pros: ASR’s revised Spinorama measurement shows bass reaching 32.2Hz at -3dB and 27.8Hz at -6dB, giving substantial low-end weight without a subwoofer. The response spans 2.3dB from 300Hz to 5kHz, with preference scores of 5.10 standalone and 6.12 with an ideal subwoofer. The review’s exceptionally low bass distortion at ordinary levels complements that extension, while dual 6.5-inch Purifi woofers provide a strong foundation for full-range listening. Measured bass extension of 32.2Hz (-3dB), with a measured sensitivity of 85.9dB.
Cons: Vertical directivity is narrow and horizontal coverage is uneven, so listening height and placement affect tonal balance. Treble resonances and response irregularities keep it from reference-level neutrality. Spinorama’s modeled EQ improves the scores to 6.09 standalone and 6.99 with an ideal subwoofer, but those are corrected results, not stock performance. Measured sensitivity is 85.9dB at 2.83V/1m with a nominal 4-ohm load; use an amplifier comfortable driving 4 ohms. Distortion rises at very high playback levels.
Full Radiant Acoustics Clarity 66 review and specifications →
| Bass Extension (-10dB) | 24.4Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 32.2Hz (measured, Audio Science Review) |
| Crossover Frequency | 2.4kHz |
| Dimensions | 40.4"H x 8.7"W x 14"D (1025 x 222 x 355 mm) |
| Drivers | Custom waveguide-loaded tweeter with beam-expansion fins, 2x 6.5" Purifi USHINDI aluminum-cone woofers |
| Impedance | 4 ohms nominal |
| Sensitivity | 85.9dB (2.83V/1m, measured, Audio Science Review; 86dB manufacturer specified) |
| Spinorama Preference Score | 5.10 |
| Spinorama Preference Score with Perfect Sub | 6.12 |
| Weight | 101.4 lbs (46 kg) each |
| Woofer Cabinet | ported, large rear port |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Radiant Acoustics Clarity 66 vs Ascend Acoustics ELX Ribbon Tower
- Radiant Acoustics Clarity 66 vs MoFi SourcePoint 888
- Radiant Acoustics Clarity 66 vs KEF Blade Two Meta
- Radiant Acoustics Clarity 66 vs Revel F328Be
- Radiant Acoustics Clarity 66 vs Revel F226Be
- Radiant Acoustics Clarity 66 vs JBL 4367
- Radiant Acoustics Clarity 66 vs Revel F228Be
- Radiant Acoustics Clarity 66 vs JBL Studio 698
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MoFi SourcePoint V10 Master Edition: $7995 per pair Crutchfield eBay
Pros: Extended bass to approximately 30 Hz in-room without subwoofer; images with excellent precision indicating tight frequency response matching between speakers. Integrated bass management with three-way treble attenuation switches for room tuning. New design from Andrew Jones represents reviewer personal second choice (behind only KEF Blade 2 Meta at 29k) among hundreds of systems auditioned; ranks above Dutch & Dutch 8C, JBL 4367, and JBL M2. Measured bass extension of 38Hz (-3dB), with a measured sensitivity of 88.8dB.
Cons: Moderate sensitivity (~89 dB) means amplifier power requirements higher than many alternatives. Deep bass extension ends above subsonic frequencies (pipe organ territory below 17 Hz requires subwoofer).
Full MoFi SourcePoint V10 Master Edition review and specifications →
| Bass Extension (-10dB) | 25Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 38Hz (measured, Erin's Audio Corner) |
| Dimensions | 48.8"H x 15.5"W x 19.9"D (1239.5 x 393.7 x 505.5 mm) |
| Drivers | 10" woofer, 10" paper‑cone concentric midrange, 1.25" soft‑dome concentric tweeter |
| Impedance | 6 ohms nominal, 5.3 ohms minimum (measured, Erin's Audio Corner) |
| Sensitivity | 88.8dB (measured, Erin's Audio Corner) |
| Spinorama Preference Score | 4.09 |
| Spinorama Preference Score with Perfect Sub | 5.40 |
| Weight | 160.9 lbs (73 kg) |
| Woofer Cabinet | passive radiator |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- MoFi SourcePoint V10 Master Edition vs KEF Blade Two Meta
- MoFi SourcePoint V10 Master Edition vs MoFi SourcePoint 888
- MoFi SourcePoint V10 Master Edition vs GR-Research NX-Treme
- MoFi SourcePoint V10 Master Edition vs Ascend Acoustics ELX Ribbon Tower
- MoFi SourcePoint V10 Master Edition vs JBL HDI-3800
- MoFi SourcePoint V10 Master Edition vs Revel F328Be
- MoFi SourcePoint V10 Master Edition vs Revel F226Be
- MoFi SourcePoint V10 Master Edition vs JBL 4367
- See all 28 comparisons