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MATCHED PAIR OF M30BX MICROPHONES
Earthworks M30BX is an omnidirectional (pressure) microphone designed and cali - brated for measurement purposes. It is a pre-polarized condenser microphone direct - ly coupled to a wideband, low output im - pedance preamplifier. The M30BX requires a single type P28L (Lithium) or equivalent 6V battery as a power source.