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Nothing CMF Headphone Pro vs Sennheiser HD 400: which should you buy?

On aggregated review scores the Nothing CMF Headphone Pro comes out ahead with an HearWiki score of 84. The full breakdown - sub-scores, specs and what reviewers actually said - is below.

Our pick: Nothing CMF Headphone Pro - Great overall at around $140.

Score breakdown

Each axis is a 0–10 blend of what reviewers scored, not a lab measurement.

Nothing CMF Headphone Pro
Sound8.0
Noise cancelling8.5
Battery9.5
Calls7.5
Value9.0
Sennheiser HD 400
Sound8.5
Value8.0

Specifications

Specification comparison of Nothing CMF Headphone Pro vs Sennheiser HD 400
SpecNothing CMF Headphone ProSennheiser HD 400
TypeOver-EarOver-Ear
Price (USD)$140$77
HearWiki score84 / 100 · Great82 / 100 · Great
Released2025-
Audio
Driver40mm custom nickel-plated dynamic driversSennheiser dynamic drivers
Driver size40 mm40 mm
Drivers per side21
Frequency response20Hz-20kHz18Hz-20kHz
Impedance16 Ω120 Ω
Wireless
Bluetooth5.4-
Bluetooth version5.4-
CodecsAAC, SBC, LDAC-
Multipoint pairingYesNo
Latency120 ms-
Wireless range10 m-
Battery
Battery life100 h-
Battery life (ANC on)50 h-
Full charge time120 min-
Quick charge5 min = 8 h-
Wireless chargingNoNo
Features
Active noise cancellingYesNo
ANC typehybrid-
Transparency modeYes-
Companion appYes-
Custom EQYes-
Wear detectionYes-
Controlsbothbuttons
Design
Weight283 g240 g
Water resistanceIPX2none
FoldableNo-
Detachable cableYes-
USB-CYesYes
Calls
Microphones51
Call noise reduction3-mic ENC architecture-

What reviewers said

Nothing CMF Headphone Pro

The CMF Headphone Pro from Nothing is a budget-friendly over-ear wireless headphone that punches well above its price point, offering a robust feature set including hybrid ANC, LDAC support, multipoint Bluetooth, and an impressive 100-hour battery life with ANC off. Its sound is lively and well-tuned for the price, while the build and controls feel solid for the cost, though some compromises exist in water resistance and EQ customization. Overall, it's a standout value pick for anyone seeking long battery life and capable noise cancellation without spending a fortune.

  • Pro:Exceptional battery life of up to 100 hours
  • Pro:Effective hybrid ANC for the price
  • Pro:Supports high-quality LDAC codec
  • Con:Basic IPX2 water resistance only
  • Con:EQ customization is limited
  • Con:Not foldable for easy portability

Sennheiser HD 400

These over-ear Sennheiser headphones are built around a neutral, open-back design aimed at studio work, delivering a wide soundstage and detailed, transparent audio for critical listening. They are lightweight and comfortable for long sessions, with a high-impedance driver setup that helps maintain low distortion, though they lack isolation and come without a carry case. Wired connectivity via USB-C and detachable cables adds versatility, but the open-back nature means sound leaks both ways.

  • Pro:Accurate, transparent sound with wide soundstage
  • Pro:Lightweight and comfortable for extended wear
  • Pro:Detachable cables and USB-C connectivity
  • Con:No included carry case or spare ear pads
  • Con:Open-back design leaks sound and offers no isolation
  • Con:High impedance may require a dedicated amplifier for best results

Summaries are AI-condensed and paraphrased from published reviews and specs - not original hands-on testing. More on our method.

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