I've been using the Dudu7 12-256 11.5" for a few days now, and I think all of these models have the same microphone problem. Generally, when it comes to Chinese units, this problem is always present! The problem is the weak microphone preamplifier, which needs to be replaced with an external one. After all, clear and crisp voice during phone calls while driving is essential, and the lack of this feature completely disqualifies this radio for everyday use! Perhaps DUDU would consider expanding its offerings and selling an external microphone with a preamplifier, or just the preamplifier? It's currently only sold in Russia, and delivery to the EU is not possible!
