At the first turn on with a connected microphone (whether or Mic1 Mic2) I was loud, unending pulsating buzzing sounds surprised. Well, I thought ... I close up the microphone always after switching on. Since buying only 4 months have passed and the unit will now every few minutes with these loud hum on - regardless of whether with or without a microphone. The speaker noise and crackling as in unregelmößigen distances to and the right channel is twice as loud as the left. And would not that enough, the microphone invites to elektorstatisch if it depends on this thing.
Conclusion: Stay away. Another one thing that can only grow because garbage mountain.
Super is about Flick through the latest that the repair or replacement worked perfectly and quickly. Now it's time to wait and see whether the new device remains functional for several months.