① memo 20180901 ~ Sennheiser Memory Mic Hands-On Review ~ Comparison of sound of the external Sennheiser Memory Mic versus the internal iPhone X sound right in the App. Sound was recorded by the stand alone Sennheiser Memory Mic – as well as in the iPhone X , and is synchronized afterwards automatically in the Sennheiser Memory Mic App – around Alphen in Holland today. In the App the source sound is chosen switching from Memory Mic to iPhone X respectively.