YAMAHA PSS-390 (sound and FM edit demonstration)

main features: 49 midsize keys 2 built-in speakers (stereo) 100 preset sounds ("voices") FM "digital synthesizer" controllable through 7 digital slide switches (spectrum, modulation, attack, decay, release, vibrato, volume) with each 8 step resolution. synthesizer on/ off button (switches back and forward between modified and unmodified sound). dual voice button to layer 2 voices (1 of them can be modified by sliders, select twice the same sound = chorus effect) 100 preset styles (i.e. rhythms with very richly orchestrated accompaniment) 2 fill-ins + ending for each style accompaniment mode switch {normal, single finger, fingered, auto bass} 2 tempo buttons (40..240 BPM) 2 transpose buttons (-12..+12 semitones) simple sequencer "song memory" with 3 select buttons for 3 independent "songs". FM sound is up to 9 voice polyphonic and very similar like OPL2 (i.e. like PC SoundBlaster FM, but with grittier envelopes and great digital zipper noise during timbre fades) but can do stereo panning effects. PCM rhythm (uses sampled percussion) accompaniment volume slider (6 steps) volume slider demo button (a well known latin/ fusion music) jacks for line out, AC adapter This is definitely one of the most exciting Yamaha PortaSound keyboards, because this instrument from 1990 features an FM synthesizer that is controlled through 7 sliders. Any of the built-in 100 preset sounds ("voices") can be modified by them, and also 2 sounds can be layered (one of them optionally modified) by...