I’m thinking now that the MA-32, introduced in 1986, was the predecessor to the Suzuki MX series Melodions, starting with the MX-32, introduced in 1998. This is based on a comparison of photographs, as I don’t have an MX. The MX models do not have the removable reed cartridge. I think I’ll order an MX-27 for closer comparison. Beezer speaks highly of the MX-27. Suzuki MX models have also been marketed under the Kawai label (as was the excellent Suzuki A-25C).