Roland MT-32 is a hybrid synthesizer of PCM and analog emulation.
It's synthesis engine is called LA (Linear Arithmetic), known by one of Roland's best-selling synth, D-50.
Roland MT-32 (1987)
I made a new easy editor for MT-32 that controls multiple partials simultaneously.
To use my editor, you need Emagic SoundDiver.
See the links below for detailed info, downloads, and .mp3 sound examples.