Neumann
Neumann KH 420
Best professional monitoring for critical audio production.
The Neumann KH 420 is a powerful three-way active studio monitor designed for professional audio environments. It features a 10-inch woofer, a 3-inch midrange driver, and a 1-inch tweeter, all powered by integrated 330 + 140 + 140 W class AB amplifiers. The monitor boasts a wide frequency response from 26 Hz to 22 kHz and can achieve a maximum SPL of 122.4 dB. Its rotatable MMD waveguide and extensive acoustical controls allow for precise sound reproduction in various room conditions. Designed for mid-field or main monitoring in stereo and multi-channel systems, it's ideal for project, music, broadcast, and post-production studios.
$5599.00
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$4699.00
Owner Satisfaction
4.8
/ 5
Category Rank
20
/ 8449
#20 in Speakers
Price vs Category Average
+283%
Above average
Woofer
10
/ "
Who it's for
- Professional audio engineers and mastering specialists.
- Mixers and producers working with bass-heavy material.
- Studio owners seeking long-term reliability and investment.
Who should skip it
- Budget-conscious producers and aspiring home studio owners.
- Engineers with limited studio space or smaller control rooms.
- Users without acoustically treated rooms or professional installation.
Performance breakdown
Frequency Range
Deep 26 Hz extension eliminates the need for a separate subwoofer.
Output Power
Massive headroom ensures distortion-free monitoring even at high volume levels.
Acoustic Precision
MMD waveguide technology delivers exceptionally consistent dispersion across the listening area.
Room Calibration
Extensive onboard controls allow for surgical tuning in challenging studio spaces.
Build Integrity
Heavy-duty construction and thermal protection guarantee long-term reliability for professionals.
Midrange Clarity
Dedicated three-way architecture provides unmatched detail in critical vocal frequency bands.
Key Specs
Woofer
10"
Midrange
3" soft dome
Tweeter
1" alloy fabric dome
Amplifiers
330 + 140 + 140 W class AB with thermal protection
Enclosure
Vented with rotatable Mathematically Modeled Dispersion (MMD) Waveguide
Frequency response
26 Hz - 22 kHz (-3 dB)
Maximum SPL
122.4 dB at 1m
Input gain control, output level control, ground lift
Features
- High-fidelity three-way sound reproduction
- Integrated Class AB amplifiers for powerful output
- Rotatable MMD Waveguide for precise sound dispersion
- Extensive acoustical controls for room adaptation
- Versatile mounting options for flexible placement
- Analog and optional digital input capabilities
- Robust thermal protection for reliable operation
What customers say
Customers consistently laud the Neumann KH 420 for its exceptional sound quality and unparalleled sonic accuracy. Reviewers frequently highlight the monitor's ability to reveal intricate details in audio, making it an indispensable tool for critical listening and professional mixing. Its robust build quality and long term reliability are also recurring praises, reinforcing its status as a premium investment for serious audio professionals. While the price point is significant, users generally perceive it as justified by the superior performance and enduring quality, establishing it as a benchmark in studio monitoring.
Know before you buy
While the KH 420 is a powerful main monitor, its extensive acoustical controls allow it to be adapted to smaller rooms. However, due to its size and output, it is best suited for mid-field monitoring environments where you have enough space to let the sound develop properly.
Yes, the KH 420 features a rotatable Mathematically Modeled Dispersion (MMD) waveguide. This allows you to maintain consistent sound dispersion characteristics regardless of whether the monitor is positioned vertically or horizontally.
The standard KH 420 comes with analog XLR-balanced inputs. Digital input capabilities are available as an optional add-on, which also includes a delay feature for precise system alignment.
The KH 420 reaches down to 26 Hz (-3 dB), providing a full-range sound that is sufficient for most professional applications without the immediate need for a dedicated subwoofer.
The monitor includes 4-position switches for bass, low-mid, and treble adjustments, along with a parametric EQ. These controls allow you to calibrate the speaker's output to compensate for specific room acoustics and placement issues.
Each unit weighs 77 lbs 3 oz, so you will need heavy-duty, professional-grade stands or a secure mounting solution capable of supporting significant weight. Ensure your mounting surface is stable to prevent vibrations and ensure safety.
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