The mic voltage has nothing to do with the sound quality output of the unit itself or driving headphones or anything related. I am not concerned with that. In fact I am sure it is fine for my headphones sound quality and sound output wise. What I am concerned with is that most creative devices I have tried under volt the microphone so you don't get a good microphone sound. Headset microphones require power between 2 and 5 volts that the microphone output provides. All creative sound cards I have tried sound horrible when using the mic because they only put out the bare minimum 2 volts to the microphone. As the main purpose of this will be that I am going to be using it for chatting with co workers on Skype I have to have a device with a good microphone input.