Neumann NDH 30 Open-Back Studio Headphone (Black)Perfect Monitoring in Neumann Quality EverywhereThe NDH 30 was developed with the aim of making the reference sound of a Neumann studio monitor setup, perfectly calibrated via the Neumann MA 1 ###Link: https: en de. neumann. com ma 1###, available everywhere in the form of an easily transportable headphone. At the same time, the NDH 30 forms its own sound reference in terms of headphone reproduction, which has become a key to success with the