Neumann KH 420 G Powerful Tri-amplified Midfield Studio Monitor

Brand: Neumann

Model Number: KH 420 G

Product Code: QD1688

Availability: In stock

AED 19,135.04 AED 20,142.15

The Neumann KH 420 G is is a three-way active monitor designed for use as a mid-field or main monitor, and can be used free-standing or flush mounted into a wall. It is particularly well-suited for use in music, broadcast, and post production studios for tracking, mixing and mastering, and in multi-channel systems can be mixed freely with other loudspeakers in the range.

The Neumann KH 420 G is designed for a working distance of 1.5 to 3 m. It handles this space effortlessly thanks to great power reserves and precisely concentrated dispersion. Even in diverse acoustical environments the KH 420 remains neutral and clear in every detail down to the subtlest nuances. No subtlety is lost; every sound element can be localized.

The KH 420 is a three-way tri-amplified monitor with thermally protected Class AB amplifiers (330 W and two times 140 W). Just like the drivers, its Mathematically Modeled Dispersion (MMD) waveguide is engineered for optimum precision. Sound distributed in a horizontally precise manner ensures flexibility in the listening position; the narrower vertical dispersion reduces the negative effects of nearby reflections, for example from a desk or mixing console. The dispersion of the KH 420 is deliberately designed to be narrower, to guarantee reference sound at longer working distances.

The KH 420 is designed for midfield applications and as main monitor in project, music, broadcast and post-production studios for recording, mixing and mastering. And in a multi-channel system, it can also be freely combined with all other Neumann studio monitors.

With its tri-channel amplifiers the KH 420 also realizes sound pressures of up to 122.4 dB. And it thereby retains high-resolution and neutral representation across the entire frequency response. This also includes an exceptional bass response down to 26 Hz. Despite using ports, there is no overhang or audible resonance in the low frequency range and the transient response is precisely controlled at all times.


  • Computer mechanically modeled three-way cabinet design using Low Resonance Integral Moulding (LRIM) materials
  • In-house simulated magnetically shielded drivers
  • Alloy fabric dome tweeter with built-in grille
  • Fabric dome, neodymium magnet, midrange driver
  • Long throw bass driver with Extremely Linear Force Factor (ELFF) and flow optimized die cast basket
  • High-capacity flow-optimized bass reflex ports with pipe damped
  • Elliptical Mathematically Modeled Dispersion (MMD) waveguide, with wide horizontal and narrow vertical dispersion
  • Electronics panel with dimensioned integrated Accelerated Heat Tunnelling (AHT) heat sink
  • Analog class AB amplifiers with large headroom and overheat limiting
  • Fast-acting independent thermo limiters for woofer, midrange dome and tweeter to protect the voice coils
  • Woofer soft clip and excursion limiters
  • Four-position bass, low-mid and treble acoustical controls and easy to use parametric equalizer
  • Wide range input gain and output level controls
  • Ground lift
  • Individual hand-alignment in final test
  • Fully documented extensive mounting hardware options (hardware sold separately)


Monitor Type

Active 3-Way


Bass-Reflex, Shielded


HF Driver: 1 x 1" / 25 mm Tweeter
MF Driver: 1 x 3" / 76 mm Cone
LF Driver: 1 x 10" / 265 mm Woofer


HF Amplifier: Class-AB Rated at 130 W / 140 W Peak
MF Amplifier: Class-AB Rated at 130 W / 140 W Peak
LF Amplifier: Class-AB Rated at 295 W / 330 W Peak

Frequency Range

26 Hz to 22 kHz  ± 3 dB

Frequency Response

28 Hz to 20 kHz ± 2 dB

Maximum Sound Pressure Level (SPL)                        

122.4 dB

Total Harmonic Distortion (THD)


Analog Input Sensitivity/Gain

+4  to -12 dB (Continuously Variable)

Self-Generated Noise

Less Than 20 dBA (at 3.93" / 10 cm)

Protections and Limiting

Excursion Limiter, Peak Limiter, and Thermal Limiting


1 x LF Shelf: -7.5 to 0 dB (2.5 dB Increments)
1 x Mid Notch/Peak: -4.5 to 0 dB (1.5 dB Increments)
1 x HF Shelf: -2 to +1 dB (1 dB Increments)

Parametric EQ

-12 to +4 dB Between 25Hz and 80Hz, Q: 1 to 8
-12 to +4 dB Between 50Hz and 160Hz, Q: 1 to 8
-12 to +4 dB Between 100Hz and 320Hz, Q: 1 to 8

Crossover Frequency

Low-Pass Frequency: 570 Hz, 24 dB/Octave Slope
High-Pass Frequency: 2 kHz, 24 dB/Octave Slope

Audio I/O

1 x XLR Balanced Analog Input

AC Input Power

100 to 240 VAC, 50/60 Hz

Power Consumption

60 W (Standby)
800 W (Maximum)

Operating Temperature

50 to 104°F / 10 to 40°C

Operating Humidity


Storage Temperature

-13 to 158°F / -25 to 70°C

Enclosure Material

Aluminium, Metal Grille, Wood

Mounting Points

8 x M5 (Rear Panel)

Dimensions (W x H x D)

33.0 x 64.5 x 44.4 cm


35,000 g

0 (Overall)

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