Have this headset now tested 2 days with my iPhone 4S. The microphone seems to be good, my interlocutors have always understood me. The button on the microphone is handy for answering, pause, skip, and to bring up Siri (personal Assitenten) on IPhone. However, I miss the deep tones and powerful bass that I'm used to from my Sennheiser IE of headphones. Listening to music was personally no pleasure for me. Therefore, I have just emailed the serive of Beyerdynamic, with a request for redemption (Have the headphones Free Shipping appointed by the Beyerdynamic website for 49 because it is the MMX not to buy 41 IU at Amazon gave). If the Beyerdynamic Servie not entirely stupid hires and the headset takes simple, then I'll try the MMX 101 IU.
Who mainly looking for a headset for making calls and gets by with little bass, is well served by MMX 41 IU.
