Meze Audio 109 Pro

The 109 Pro is a wired open-back Hi-Fi headphone from Meze Audio. It relies on a 50 mm dynamic driver and connects via a dual 3.5 mm TS jack, a configuration typical of high-end open-back headphones designed for seated listening, at home or in a studio.

The 50 mm driver delivers a total harmonic distortion of less than 0.1% at 1 kHz, reflecting clean sound reproduction at this frequency level. The frequency range extends from 5 Hz to 30 kHz, a wide coverage that exceeds the human audible spectrum at both ends. With an impedance of 40 Ω and a sensitivity of 112 dB SPL/mW at 1 kHz, the headphones remain easy to drive, whether from a portable source or from a headphone amplifier or a more complex home system.

The earcups are made from black walnut wood, a material that contributes to the headphone's identity and its open-back architecture. This type of design allows air to circulate around the drivers, which affects the sound rendering but also lets sound pass through to the outside, a point worth bearing in mind depending on the listening environment.

The 109 Pro is aimed at a listener seeking relaxed listening, at home or in a quiet environment, rather than portable use. Its ease of drive, combined with a moderate impedance, makes it compatible with a variety of sources, from digital players to dedicated headphone amplifiers.