
EARTHWORKS M30BX October 2000—The M30BX is a battery-powered version of the M30 reference mic. It is accurate within +/- 1 dB from 9 Hz to 27k Hz and runs for 1,500 hours on a single AA battery. It will drive a single-ended input just fine. A switch allows 14 dB of gain, enough to drive most sound cards directly for laptop field use.
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