As we known, ears will be harmed when we use earphone listening music with loud volume. So, for a long time, the government related health organizations all required to restrict the maximum output sound voltage class for portable music playback equipments. As the compulsive standard, EN50332 has been effective in Germany and Europe from July 1, 2004.
In 2008, MORLAB has introduce into “Sound and maximum output voltage testing equipment” from Denmark B&K company, this instrument can complete EN 50332 SPL Maximum sound voltage、Noise ISO-7799 sound power、mobile sound frequency testing and sound frequency capability testing for different kinds of products.
If you need any more information, please send to：info_sz@morlab.cn or call: 0755－86130318.