CFM (Martin) EM-18
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.