Short answer: the Neumann KH420 for better sound quality, the Kali Audio LP-6 V2 for the lower price. The Neumann KH420 ranks #4 of 40 powered bookshelf speakers at $10500. The Kali Audio LP-6 V2 ranks #17 at $398, $10102 cheaper.
What the Neumann KH420 gets right: 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. The catch: Horizontal beamwidth, while well controlled, is on the narrow side at about ±55 degrees.
On the Kali Audio LP-6 V2 side: Outstandingly neutral active monitor for the money, with no audible amplifier hiss in Erin’s listening and excellent horizontal directivity from the contoured waveguide. Set against that: A vertical directivity disturbance around 1.5-2kHz makes ear height important; desk or console reflections and ceiling bounce can expose the crossover lobing, so absorption may help.
Buy the Neumann KH420 if sound quality matters more than the price. Buy the Kali Audio LP-6 V2 if the price matters more than sound quality.
Specifications Side By Side
| Neumann KH420 | Kali Audio LP-6 V2 | |
|---|---|---|
| Price | $10500 | $398/pair |
| Ranked | #4 of 40 in Large Size Powered Bookshelf Speakers | #17 of 40 in Large Size Powered Bookshelf Speakers |
| Bass Extension (-10dB) | 24Hz (measured, Audio Science Review) | - |
| Bass Extension (-3dB) | 32Hz (measured, Audio Science Review) | 42Hz (measured, Erin’s Audio Corner) |
| Dimensions | 25.4"H x 13"W x 17.5"D (645.2 x 330.2 x 444.5 mm) | 14.1"H x 8.8"W x 10.2"D |
| Inputs | XLR | XLR, balanced TRS and RCA |
| Weight | 77.2 lbs / 35 kg each | - |
| Drivers | 10" woofer, 4" dome midrange, 1" fabric dome tweeter | 1" soft-dome tweeter; 6.5" woofer |
| App | Yes (MA 1 alignment) | - |
| Bluetooth | No | - |
| DSP | No | Yes; boundary presets and LF/HF trims |
| EQ | Yes (Room response controls) | - |
| Frequency Response | 31Hz - 21kHz (±3dB) (Manufacturer specified) | - |
| Max SPL | 124dB @ 1m | Approximately 102dB per pair with good measured linearity (Erin’s Audio Corner) |
| Output Power | 555w Per Speaker | - |
| Sensitivity | - | Not applicable (active DSP loudspeaker) |
| Amplification | - | Bi-amplified Class D, 40W LF + 40W HF per speaker |
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The Two Speakers In Full
Neumann KH420: $10500 Bhphotovideo
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 |
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- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Kali Audio LP-6 V2: $398/pair Amazon Sweetwater
Pros: Outstandingly neutral active monitor for the money, with no audible amplifier hiss in Erin’s listening and excellent horizontal directivity from the contoured waveguide. Erin measured 42Hz F3 and on-axis linearity within approximately -2.51/+1.99dB. The pair remains respectably linear to roughly 102dB at 1m, the front port controls turbulence, and rear DIP switches provide practical boundary-placement profiles plus LF/HF trims. Balanced XLR/TRS and unbalanced RCA inputs broaden compatibility; Erin needed only about +1.5dB near 8kHz for his preferred amount of air.
Cons: A vertical directivity disturbance around 1.5-2kHz makes ear height important; desk or console reflections and ceiling bounce can expose the crossover lobing, so absorption may help. Limiting becomes visible above 96dB/1m, and from 76 to 96dB the low-frequency/midband balance drops by roughly 1dB, making this better as a nearfield or modest-distance monitor than a far-field high-output system. There is no digital input or network control, and each speaker needs AC power and a separate signal cable.
Full Kali Audio LP-6 V2 review and specifications →
| Amplification | Bi-amplified Class D, 40W LF + 40W HF per speaker |
|---|---|
| Bass Extension (-3dB) | 42Hz (measured, Erin's Audio Corner) |
| DSP | Yes; boundary presets and LF/HF trims |
| Dimensions | 14.1"H x 8.8"W x 10.2"D |
| Drivers | 1" soft-dome tweeter; 6.5" woofer |
| Inputs | XLR, balanced TRS and RCA |
| Max SPL | Approximately 102dB per pair with good measured linearity (Erin's Audio Corner) |
| Sensitivity | Not applicable (active DSP loudspeaker) |
As an eBay Partner, we may be compensated if you make a purchase.
- Links
- Reviews, Comparisons and Sound Samples
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