21 voices polyphonic machine with 12 multitimbral parts. Later version SD1/32 raises polyphony to 32 voices.
A standard patch is composed by up to six Voices, each of which uses a digital oscillator playing one of 16-bit resolution 168 waves (it's a special rompler with 3.5MB of ROM). The wavetable is organized in various instruments family: String; Brass; Breath; Bass; Percussion; Tuned Percussion; Transwave; Multiwave; Inharmonic; Waveform; Drums; Multi-drums; Piano; Hip Percussion; Mixed Samples. The wavetable is pretty similar to previous VFX, but it adds severe new percussion, like the Tr808
set and a 1MB piano ROM.TRANSWAVE
VFX are very famous for this special waves that can be played from any starting point , moving through the wavetable as the note is held — the waveform is changing progressively between many small waveforms (100) and the result is that you can create complex texture and variations. The SD1 contains 17 transwave "waves" to play with.