DIN EN 50332-2-2014 音响系统设备: 便携式音频播放设备用头戴式受话器和耳机. 最大声压级测量方法. 第2部分: M单独提供或同时提供, 或者作为一揽子包装设备提供但两者之间有标准化连接器(可连接不同制造商或提供设计的部件)时头戴式受话器设置的匹配; 德文版本EN 50332-2-2013
Sound system equipment: Headphones and earphones associated with personal music players - Maximum sound pressure level measurement methodology - Part 2: Matching of sets with headphones if either or both are offered separately, or are offered as one packa