An Electet Condenser mic is when a backplate and diaphram are charged by an electret material which is in the diaphram or on the backplate. Verse A True Condenser where the diaphram and the backplate are charged with a voltage from a curcuit built into the mic The deffinition for electret is a material that permanently stores an electrostatic charge. What would an electret be? Does a capacitor qualify? A capacitor stores a charge but not permanently so I don't think it would be? So what is an electret? And which mics are considered Electret Condensers and which are considered true condensers? Thanks in advance.