The Neumann NDH 30 Black Edition is the all-black version of Neumann's open-back reference headphone for mixing, mastering and critical editing. It uses 38 mm dynamic transducers with neodymium magnets operating as acoustic dipoles for fast transients, tight bass, neutral mids and clear highs, with frequency-selective absorbers that remove the treble hype common to many headphones. Imaging is precise and the voicing matches Neumann's KH-line monitors, making it a portable extension of a calibrated studio. The headband is spring steel with aluminium ear cups, the headphone folds for travel and the earpads and cable are replaceable. Specifications: 12 Hz to 34 kHz frequency range, 120 ohm impedance, 104 dB SPL sensitivity and 352 g weight without cable. Catalogue 399006 includes the headphone, a detachable 3 m straight symmetrical cable with 3.5 mm plug, a 6.3 mm adapter, a cloth pouch and guides. As an open-back design it lets sound in and out, so it suits control rooms and quiet spaces rather than noisy environments.