The 40 mm drivers deliver rich bass, which can be adjusted using a slide switch. The CMF Heaphone Pro delivers well-rounded mids for vocals and fairly precise highs, but in the super-high range, the price point sometimes becomes apparent, as these frequencies are not always reproduced cleanly. The mids are not very present, but this can be easily compensated for with the equalizer. LDAC provides hi-res details, and an audio jack (3.5 mm) is also available as an alternative. Sound output via USB is not possible. Overall, the CMF Headphones Pro deliver a good sound package.

The three ENC microphones with AI noise reduction clearly capture speech in quiet rooms and effectively block wind noise. In noisy environments, the sound becomes muddy and background noise comes through.

The adaptive hybrid ANC (up to 40 dB) effectively dampens humming (subway, car) and constant noise, including adaptive mode via app. Higher frequencies or voices are hardly reduced, but that was not to be expected in this price range.

The transparency mode leaves a largely natural and low-noise impression.