Short answer: the Neumann KH420 for better sound quality, the Focal Twin6 Be for the lower price. The Neumann KH420 ranks #4 of 61 powered bookshelf speakers at $10500. The Focal Twin6 Be ranks #38 at $2200, $8300 cheaper.
What the Focal Twin6 Be offers: High-output 2.5-way studio monitor with an inverted beryllium tweeter and two 6.5-inch W-composite drivers, one covering bass/midrange and the other reinforcing only 40-150Hz. Erin measured excellent harmonic distortion at both 86 and 96dB, essentially quarter-decibel dynamic compression and clean subjective output around 95dB. Mirror-configurable driver orientation, front ports, shelving/notch controls and switchable +4dBu/-10dBV input sensitivity support professional installation. Watch for: The response and directivity are not as uniformly neutral as newer waveguided three-way monitors, and Erin suspected intermodulation-related roughness even though conventional harmonic distortion was low. The amplifier plate becomes notably warm after extended operation. Hiss is more audible in -10dBV mode, and safe output can be deceptive because the speaker gives little audible warning before excessive exposure. The active design has no passive impedance or sensitivity figure; low-bass extension should be augmented for full-range mastering.
What the Neumann KH420 offers: CEA2034 spinorama shows an extended, flat on-axis response that matches Neumann’s own published measurement to within 0.08dB at its one minor dip (around 60Hz), with excellent off-axis behavior. Predicted in-room response is smooth and rated “excellent” by the reviewer. Horizontal beamwidth of about ±55 degrees is very well controlled and stays consistent across frequency. Distortion is low at 86dB SPL/1m. Exceptionally high sustained output capability - the reviewer needed to “hold on for dear life” during extreme-level testing at 7 feet, with bass output described as making the entire house resonate. Reviewer’s overall verdict was “Great,” placing it on the recommended list and calling it a speaker “you could buy and forget about upgrading ever again.” Watch for: Horizontal beamwidth, while well controlled, is on the narrow side at about ±55 degrees. Vertical directivity is more limited than horizontal - the reviewer recommends staying within about ±30 degrees of the reference axis (just below the tweeter waveguide edge). Distortion rises noticeably in the bass region at 96dB SPL/1m, with an unusual 3rd-harmonic uptick appearing near 10kHz at that output level. At 106dB SPL/1m, the tweeter’s protection limiting engages and the clipping indicator activates - a real, measurable output ceiling despite the speaker’s otherwise very high capability. Very expensive.
Buy the Focal Twin6 Be if the price matters more than sound quality. Buy the Neumann KH420 if sound quality matters more than the price.
Specifications Side By Side
| Focal Twin6 Be | Neumann KH420 | |
|---|---|---|
| Price | $2,200 each | $10500 |
| Ranked | #38 of 61 in Large Size Powered Bookshelf Speakers | #4 of 61 in Large Size Powered Bookshelf Speakers |
| Bass Extension | 40Hz manufacturer specified; Erin measured strong low-frequency linearity | - |
| Bass Extension (-3dB) | 48.3Hz (measured, Erin’s Audio Corner) | 32Hz (measured, Audio Science Review) |
| Bass Extension (-10dB) | 39.1Hz (measured, Erin’s Audio Corner) | 24Hz (measured, Audio Science Review) |
| Sensitivity | Not applicable (active studio monitor) | - |
| Drivers | 1" inverted beryllium tweeter; dual 6.5" W-cone drivers | 10" woofer, 4" dome midrange, 1" fabric dome tweeter |
| Amplification | 150W LF + 100W LF/MF + 100W HF | - |
| Inputs | Balanced XLR with +4dBu/-10dBV sensitivity | XLR |
| Dimensions | - | 25.4"H x 13"W x 17.5"D (645.2 x 330.2 x 444.5 mm) |
| Weight | - | 77.2 lbs / 35 kg each |
| App | - | Yes (MA 1 alignment) |
| Bluetooth | - | No |
| DSP | - | No |
| EQ | - | Yes (Room response controls) |
| Frequency Response | - | 31Hz - 21kHz (±3dB) (Manufacturer specified) |
| Max SPL | - | 124dB @ 1m |
| Output Power | - | 555w Per Speaker |
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The Two Speakers In Full
Focal Twin6 Be: $2,200 each Amazon eBay
Pros: High-output 2.5-way studio monitor with an inverted beryllium tweeter and two 6.5-inch W-composite drivers, one covering bass/midrange and the other reinforcing only 40-150Hz. Erin measured excellent harmonic distortion at both 86 and 96dB, essentially quarter-decibel dynamic compression and clean subjective output around 95dB. Mirror-configurable driver orientation, front ports, shelving/notch controls and switchable +4dBu/-10dBV input sensitivity support professional installation.
Cons: The response and directivity are not as uniformly neutral as newer waveguided three-way monitors, and Erin suspected intermodulation-related roughness even though conventional harmonic distortion was low. The amplifier plate becomes notably warm after extended operation. Hiss is more audible in -10dBV mode, and safe output can be deceptive because the speaker gives little audible warning before excessive exposure. The active design has no passive impedance or sensitivity figure; low-bass extension should be augmented for full-range mastering.
Full Focal Twin6 Be review and specifications →
| Amplification | 150W LF + 100W LF/MF + 100W HF |
|---|---|
| Bass Extension | 40Hz manufacturer specified; Erin measured strong low-frequency linearity |
| Bass Extension (-10dB) | 39.1Hz (measured, Erin's Audio Corner) |
| Bass Extension (-3dB) | 48.3Hz (measured, Erin's Audio Corner) |
| Drivers | 1" inverted beryllium tweeter; dual 6.5" W-cone drivers |
| Inputs | Balanced XLR with +4dBu/-10dBV sensitivity |
| Sensitivity | Not applicable (active studio monitor) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Neumann KH420: $10500 Bhphotovideo eBay
Pros: CEA2034 spinorama shows an extended, flat on-axis response that matches Neumann’s own published measurement to within 0.08dB at its one minor dip (around 60Hz), with excellent off-axis behavior. Predicted in-room response is smooth and rated “excellent” by the reviewer. Horizontal beamwidth of about ±55 degrees is very well controlled and stays consistent across frequency. Distortion is low at 86dB SPL/1m. Exceptionally high sustained output capability - the reviewer needed to “hold on for dear life” during extreme-level testing at 7 feet, with bass output described as making the entire house resonate. Reviewer’s overall verdict was “Great,” placing it on the recommended list and calling it a speaker “you could buy and forget about upgrading ever again.”
Cons: Horizontal beamwidth, while well controlled, is on the narrow side at about ±55 degrees. Vertical directivity is more limited than horizontal - the reviewer recommends staying within about ±30 degrees of the reference axis (just below the tweeter waveguide edge). Distortion rises noticeably in the bass region at 96dB SPL/1m, with an unusual 3rd-harmonic uptick appearing near 10kHz at that output level. At 106dB SPL/1m, the tweeter’s protection limiting engages and the clipping indicator activates - a real, measurable output ceiling despite the speaker’s otherwise very high capability. Very expensive.
Full Neumann KH420 review and specifications →
| App | Yes (MA 1 alignment) |
|---|---|
| Bass Extension (-10dB) | 24Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 32Hz (measured, Audio Science Review) |
| Bluetooth | No |
| DSP | No |
| Dimensions | 25.4"H x 13"W x 17.5"D (645.2 x 330.2 x 444.5 mm) |
| Drivers | 10" woofer, 4" dome midrange, 1" fabric dome tweeter |
| EQ | Yes (Room response controls) |
| Frequency Response | 31Hz - 21kHz (±3dB) (Manufacturer specified) |
| Inputs | XLR |
| Max SPL | 124dB @ 1m |
| Output Power | 555w Per Speaker |
| Weight | 77.2 lbs / 35 kg each |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons