PPG Wave

The PPG Wave was a series of digital/analog hybrid synthesizers built by the German company Palm Products GmbH from 1981 to 1987.

The Wave 2 had 8-voice polyphony, with one oscillator per voice, it offered digital wavetables and analog VCA, envelope and VCF. The Wave 2.2 can generate over 2,000 different single-cycle 8-bit digital waveforms. It also includes an 8-track sequencer. The Wave 2.2 has two oscillators for each voices. The Wave 2.3 sampler included 12-bit digital waveforms, Fourier analysis and linear playback of samples. As well as 8-parts multitimbrality and MIDI.

Specifications
The PPG Wave was produced in three successive variants:
 * Wave 2 (1981–1982) - 8 oscillators (one per voice), 8-bit resolution, single modulation wheel, CEM 3320 VCFs
 * Wave 2.2 (1982–1984) - 16 oscillators (two per voice), 8-bit resolution, dual modulation wheels, SSM 2044 VCFs
 * Wave 2.3 (1984–1987) - 16 oscillators (two per voice), 12-bit resolution, dual modulation wheels, SSM 2044 VCFs, 8-part multimbrality