Synth Details

Yamaha PSS 480

61 midsize keys
2 built-in speakers (stereo)
MIDI
100 preset sounds ("voices")
FM synthesizer (2 operators, controlled through buttons, full parameter control only through MIDI, 5 OBS buttons to save user presets)
100 preset styles (i.e. rhythms with very richly orchestrated accompaniment)
3 fill-ins + ending for each style
separate mute buttons {rhythm, accompaniment, bass, chord}
tempo control (10..220 BPM)
transpose (-12..+12 semitones)
tuning (-16..+16 steps, 3.13 cent)
melody sequencer (5 OBS memories, each 250 notes)
chord sequencer (5 OBS memories)
"custom drummer" (1 programmable drum pattern with OBS {clear, accent, drumroll, all clear} functions)
4 pads {rhythm start/ stop, synchro, fill-in 1, fill-in 2, fill-in 3}
4 OBS effect buttons {vibrato, duet, sustain, reverb, portamento, stereo chorus}
FM sound is up to 12 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).
PCM rhythm (32 sampled percussion, 8 note polyphonic; 4 OBS buttons switch the 8 drumpads between 4 fixed percussion assignments)
volume slider
melody volume button (9 steps, no separate accompaniment volume controls)
memory holds data only few hours when no batteries inserted
demo button (a jazz/ fusion music)
jacks for line out, headphone, MIDI (in, out, through), AC adapter
case bottom with grooves and screw holes for keyboard stand