The MCX5 was in part designed by Ozawa-san who started Shelter in the mid 1980s after spending a few years at Fidelity Research. It came out (with the MCX3) many years after the FR-7 series and was designed for use with the XG-5 and XG-7 transformers. As far as I know, as Dertonarm suggested, it is not anything like the FR-7.
Jcarr above recommended the FR PMC3 as worth a listen. They are not easy to find.
Jcarr above recommended the FR PMC3 as worth a listen. They are not easy to find.