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Large Diaphragm Condensers: When it’s absolute fidelity to the source you’re after, reach for a condenser microphone. Condensers are more responsive to the “speed” and nuances of sound waves than dynamic mics. This simple mechanical system consists of a thin stretched conductive diaphragm placed close to a metal disk (backplate). This arrangement creates a capacitor which is given its electric charge by an external voltage source – a battery or dedicated power supply, or phantom power supplied by your mixer. The diaphragm vibrates slightly in response to sound pressure, causing the capacitance to vary and producing a voltage variation – the signal output of the microphone. Condenser mics come in both solid-state and tube variations and a wide variety of shapes and sizes – but they all function according to these principles.