Neumann KH120 MKII vs KEF LS50 Wireless II

Last updated: August 25, 2026

Short answer: the Neumann KH120 MKII. It ranks #2 of 64 powered bookshelf speakers by sound quality at $2000; the KEF LS50 Wireless II ranks #16 and costs $2999, so there is not much of a tradeoff to weigh.

What the Neumann KH120 MKII offers: CEA2034 spinorama is about as flat as the reviewer has measured, with excellent directivity aside from a small blip around 2kHz, and bass response that stays flat almost down to 50Hz. Predicted in-room response is superb despite not being strictly valid for a near-field monitor at this distance. Horizontal beamwidth of about ±50 degrees is nice and well controlled. Distortion at 86dB SPL/1m is exceptionally low. Even at 96dB SPL/1m - just 1dB before the clipping indicator engages - it stays very clean outside of deep bass. Watch for: A minor directivity blip appears around 2kHz. Vertical directivity narrows quickly above the reference axis, so the reviewer recommends staying right at it. Distortion rises substantially in the deep bass under 50Hz at higher output (96dB SPL/1m). Cumulative spectral decay (waterfall) shows a resonance in the upper midrange. High price.

What the KEF LS50 Wireless II offers: Uni-Q coincident driver array (130mm aluminum woofer with a 25mm MAT dome tweeter mounted at its acoustic center) gives excellent, consistent off-axis dispersion, measuring the tightest directivity spread of this batch (directivity_spdi_stddev 3.96) alongside a smooth listening-window response (smoothness_listening_window 0.375, aad_on_axis 0.343). Bass extends to a genuinely deep 51.3Hz at -3dB / 41.5Hz at -10dB for a compact standmount, backed by a bi-amped 280W (LF) + 100W (HF) design. One of the most complete input sets in its class: HDMI eARC, optical, coaxial, RCA, Ethernet, AirPlay 2, Chromecast, Roon Ready, and Spotify/Tidal Connect, so it can replace a full receiver-based setup for TV, turntable, and streaming use. Watch for: Primary/Secondary architecture means one speaker handles every input while the other depends on a wireless or wired Ethernet link back to it - placement is less flexible than a fully symmetric pair. No mic-based automatic room correction, only fixed placement EQ presets in the KEF Connect app. Bass alignment Q (lfq 0.676) sits toward the higher end of typical ported values. At $2,999.99/pair it’s roughly double the price of KEF’s own smaller LSX II.

Buy the Neumann KH120 MKII. It ranks higher for sound quality than the KEF LS50 Wireless II and costs less, so there is no real case for the other one.

Neumann KH120 MKII vs KEF LS50 Wireless II

Specifications Side By Side

Neumann KH120 MKII KEF LS50 Wireless II
Price$2000$2,999.00
Ranked#2 of 64 in Medium Size Powered Bookshelf Speakers#16 of 64 in Medium Size Powered Bookshelf Speakers
Bass Extension (-10dB)36Hz (measured, Audio Science Review)41.5Hz (measured, spinorama.org)
Bass Extension (-3dB)46Hz (measured, Audio Science Review)51.3Hz (measured, spinorama.org)
Dimensions11.3"H x 7.2"W x 8.9"D (287 x 182.9 x 226.1 mm)12" x 7.9" x 12.2" (305 x 200 x 311 mm) (12.0 x 7.9 x 12.2 in) each
InputsXLRHDMI eARC, optical, digital coaxial, 3.5mm analog, USB-A (service), Ethernet, RCA subwoofer out
Drivers5.25" woofer, 1" titanium fabric dome tweeterUni-Q coincident array: 130mm aluminum woofer + 25mm MAT aluminum dome tweeter
Weight14.6 lbs / 6.6 kg each44.3 lbs / 20.1 kg (44.3 lb) for the pair
AppYes (MA 1 alignment)KEF Connect (placement EQ presets, source selection, firmware updates)
BluetoothNoYes, 4.2
DSPYes-
EQYes (via DSP)Yes, fixed placement presets (desk/bookshelf/wall-mount) - no automatic room correction
Frequency Response44Hz - 21kHz (±3dB) (Manufacturer specified)45Hz - 28kHz ±3dB
Max SPL116.8dB @ 1m108dB at 1m
Output Power245W (145W woofer + 100W tweeter)280W (LF) + 100W (HF) per speaker, bi-amped

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The Two Speakers In Full

Neumann KH120 MKII: $2000 Bhphotovideo eBay

Neumann KH120 MKII ranking card

Pros: CEA2034 spinorama is about as flat as the reviewer has measured, with excellent directivity aside from a small blip around 2kHz, and bass response that stays flat almost down to 50Hz. Predicted in-room response is superb despite not being strictly valid for a near-field monitor at this distance. Horizontal beamwidth of about ±50 degrees is nice and well controlled. Distortion at 86dB SPL/1m is exceptionally low. Even at 96dB SPL/1m - just 1dB before the clipping indicator engages - it stays very clean outside of deep bass.

Cons: A minor directivity blip appears around 2kHz. Vertical directivity narrows quickly above the reference axis, so the reviewer recommends staying right at it. Distortion rises substantially in the deep bass under 50Hz at higher output (96dB SPL/1m). Cumulative spectral decay (waterfall) shows a resonance in the upper midrange. High price.

AppYes (MA 1 alignment)
Bass Extension (-10dB)36Hz (measured, Audio Science Review)
Bass Extension (-3dB)46Hz (measured, Audio Science Review)
BluetoothNo
DSPYes
Dimensions11.3"H x 7.2"W x 8.9"D (287 x 182.9 x 226.1 mm)
Drivers5.25" woofer, 1" titanium fabric dome tweeter
EQYes (via DSP)
Frequency Response44Hz - 21kHz (±3dB) (Manufacturer specified)
InputsXLR
Max SPL116.8dB @ 1m
Output Power245W (145W woofer + 100W tweeter)
Weight14.6 lbs / 6.6 kg each

KEF LS50 Wireless II: $2,999.00 Amazon KEF Crutchfield eBay

KEF LS50 Wireless II ranking card

Pros: Uni-Q coincident driver array (130mm aluminum woofer with a 25mm MAT dome tweeter mounted at its acoustic center) gives excellent, consistent off-axis dispersion, measuring the tightest directivity spread of this batch (directivity_spdi_stddev 3.96) alongside a smooth listening-window response (smoothness_listening_window 0.375, aad_on_axis 0.343). Bass extends to a genuinely deep 51.3Hz at -3dB / 41.5Hz at -10dB for a compact standmount, backed by a bi-amped 280W (LF) + 100W (HF) design. One of the most complete input sets in its class: HDMI eARC, optical, coaxial, RCA, Ethernet, AirPlay 2, Chromecast, Roon Ready, and Spotify/Tidal Connect, so it can replace a full receiver-based setup for TV, turntable, and streaming use.

Cons: Primary/Secondary architecture means one speaker handles every input while the other depends on a wireless or wired Ethernet link back to it - placement is less flexible than a fully symmetric pair. No mic-based automatic room correction, only fixed placement EQ presets in the KEF Connect app. Bass alignment Q (lfq 0.676) sits toward the higher end of typical ported values. At $2,999.99/pair it’s roughly double the price of KEF’s own smaller LSX II.

AppKEF Connect (placement EQ presets, source selection, firmware updates)
Bass Extension (-10dB)41.5Hz (measured, spinorama.org)
Bass Extension (-3dB)51.3Hz (measured, spinorama.org)
BluetoothYes, 4.2
Dimensions12" x 7.9" x 12.2" (305 x 200 x 311 mm) (12.0 x 7.9 x 12.2 in) each
DriversUni-Q coincident array: 130mm aluminum woofer + 25mm MAT aluminum dome tweeter
EQYes, fixed placement presets (desk/bookshelf/wall-mount) - no automatic room correction
Frequency Response45Hz - 28kHz ±3dB
InputsHDMI eARC, optical, digital coaxial, 3.5mm analog, USB-A (service), Ethernet, RCA subwoofer out
Max SPL108dB at 1m
Output Power280W (LF) + 100W (HF) per speaker, bi-amped
Weight44.3 lbs / 20.1 kg (44.3 lb) for the pair