CFM (Martin) EM-18
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The first CFM models were introduced in 1979 and was comprised of two 6-stringers and a bass.
They had contoured maple and walnut bodies. None of the CFM models sold particularly well, but the EM-18, which featured twin humbucking pickups with coil-taps and phase reverse switches, sold 1,375 examples between 1979 and 1983.