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The matte gray CMBI Battery-Powered Microphone Amplifier from Schoeps is designed to power microphones requiring phantom power when none is available from a recorder or wireless transmitter. It is compatible with the 19 microphones in Schoeps' Colette series.
Note: Because of this mic's unbalanced, low-level output and its medium output impedance, the total cable length should be kept to less than about 49' (15m) to avoid possible RF interference and impaired performance.
The CMBI features a readily available internal 6V silver oxide battery, which, combined with power saving circuitry, gives up to 80 hours of operation. About 6 hours before the end of battery life a built-in LED begins to light up as a warning.
In addition to battery operation, the CMBI allows for external powering through a standard XLR microphone cable.
Instead of a large XLR connector, the CMBI has a flush-mounted 5-pin miniature connector at the output which also allows for external powering. For normal connection of the CMBI to a DAT recorder, etc., a 16.4' (5m) cable with a 3.5mm mini stereo plug is included. This cable can be extended with a standard 3.5mm stereo jack to stereo plug cable, or with a miniature connector extension cable such as Schoeps KS 5 I (sold separately).