The Superlux headphones are of the dynamic and semi-open type harbouring a 50-mm dome driver equipped with a neodymium magnet. The sensitivity of the Superlux HD681 headphones is of the order of 98 dB (SPL/mW) and it covers a frequency range of 10 Hz to 30,000 Hz. The semi-open design of these dynamic headphones makes them ideal for use in professional monitoring applications. The Superlux headphones are made from top-quality audio components to ensure high performance and their ergonomic design makes them comfortable even for long-term wear. The head-band of the Superlux HD681 headphones is adjustable to provide the listener with a great fit and one side of the headphones can even be swivelled down to allow for single-ear monitoring. The 2.5-m, one-sided cable of these dynamic headphones makes it easy to move around without being impeded by a short cable. These Superlux headphones with their exceptional deep, low frequency are suitable for any type of music listening, whether it is mixing, tracking, monitoring, or simply enjoying a piece of music.